Memory leak in the keyboard input event handlers support in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption) by rapidly generating large keyboard events.

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2017:2408 advisory.

    KVM (Kernel-based Virtual Machine) is a full virtualization solution for Linux on a variety of     architectures. The qemu-kvm-rhev packages provide the user-space component for running virtual machines     that use KVM in environments managed by Red Hat products.

    Security Fix(es):

    * Quick Emulator (QEMU) built with Network Block Device (NBD) Server support was vulnerable to a null-     pointer dereference issue. The flaw could occur when releasing a client that was not initialized due to     failed negotiation. A remote user or process could exploit this flaw to crash the qemu-nbd server (denial     of service). (CVE-2017-9524)

    * An information-exposure flaw was found in Quick Emulator (QEMU) in Task Priority Register (TPR)     optimizations for 32-bit Windows guests. The flaw could occur while accessing TPR. A privileged user     inside a guest could use this issue to read portions of the host memory. (CVE-2016-4020)

    * A memory-leak flaw was found in the Quick Emulator (QEMU) built with USB xHCI controller emulation     support. The flaw could occur while doing a USB-device unplug operation. Unplugging the device repeatedly     resulted in leaking host memory, which affected other services on the host. A privileged user inside the     guest could exploit this flaw to cause a denial of service on the host or potentially crash the host's     QEMU process instance. (CVE-2016-7466)

    * Multiple CVEs were fixed as a result of rebase to QEMU 2.9.0. (CVE-2016-6888, CVE-2016-7422,     CVE-2016-8576, CVE-2016-8669, CVE-2016-8909, CVE-2016-8910, CVE-2016-9907, CVE-2016-9911, CVE-2016-9921,     CVE-2016-9922, CVE-2016-10155, CVE-2017-5579, CVE-2017-5973, CVE-2017-6414, CVE-2017-8309, CVE-2017-8379,     CVE-2017-9310, CVE-2017-9373, CVE-2017-9374, CVE-2017-9375)

    Red Hat would like to thank Donghai Zdh (Alibaba Inc.) for reporting CVE-2016-4020; Li Qiang (Qihoo 360     Inc.) for reporting CVE-2016-6888; Qinghao Tang (Marvel Team 360.cn Inc.) and Zhenhao Hong (Marvel Team     360.cn Inc.) for reporting CVE-2016-7422; Li Qiang (360.cn Inc.) for reporting CVE-2016-7466,     CVE-2016-10155, CVE-2017-5579, CVE-2017-5973, and CVE-2017-6414; PSIRT (Huawei Inc.) for reporting     CVE-2016-8669; Andrew Henderson (Intelligent Automation Inc.) for reporting CVE-2016-8910; Qinghao Tang     (Qihoo 360), Li Qiang (Qihoo 360), and Jiangxin (Huawei Inc.) for reporting CVE-2016-9921 and     CVE-2016-9922; Jiang Xin (PSIRT, Huawei Inc.) for reporting CVE-2017-8309 and CVE-2017-8379; and Li Qiang     (Qihoo 360 Gear Team) for reporting CVE-2017-9310, CVE-2017-9373, CVE-2017-9374, and CVE-2017-9375.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 5 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - xsa224 xen: grant table operations mishandle reference counts (XSA-224) (CVE-2017-10921)

  - The qemu implementation in libvirt before 1.3.0 and Xen allows local guest OS users to cause a denial of     service (host disk consumption) by writing to stdout or stderr. (CVE-2014-3672)

  - Heap-based buffer overflow in the PCNET controller in QEMU allows remote attackers to execute arbitrary     code by sending a packet with TXSTATUS_STARTPACKET set and then a crafted packet with TXSTATUS_DEVICEOWNS     set. (CVE-2015-3209)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

The remote Redhat Enterprise Linux 7 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

  - Qemu: audio: host memory leakage via capture buffer (CVE-2017-8309)

  - The qemu implementation in libvirt before 1.3.0 and Xen allows local guest OS users to cause a denial of     service (host disk consumption) by writing to stdout or stderr. (CVE-2014-3672)

  - The process_tx_desc function in hw/net/e1000.c in QEMU before 2.4.0.1 does not properly process transmit     descriptor data when sending a network packet, which allows attackers to cause a denial of service     (infinite loop and guest crash) via unspecified vectors. (CVE-2015-6815)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

This plugin has been deprecated as it does not adhere to established standards for this style of check.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-4289 advisory.

    - net: ignore packet size greater than INT_MAX (Jason Wang)  [Orabug: 28763782]  {CVE-2018-17963}
    - pcnet: fix possible buffer overflow (Jason Wang)  [Orabug: 28763774]  {CVE-2018-17962}
    - rtl8139: fix possible out of bound access (Jason Wang)  [Orabug: 28763765]  {CVE-2018-17958}
    - ne2000: fix possible out of bound access in ne2000_receive (Jason Wang)  [Orabug: 28763758]     {CVE-2018-10839}
    - seccomp: set the seccomp filter to all threads (Marc-Andre Lureau)  [Orabug: 28763748]  {CVE-2018-15746}
    - Document various CVEs as fixed (Mark Kanda)  [Orabug: 28763710]  {CVE-2017-10806} {CVE-2017-11334}     {CVE-2017-12809} {CVE-2017-13672} {CVE-2017-13673} {CVE-2017-13711} {CVE-2017-14167} {CVE-2017-15038}     {CVE-2017-15119} {CVE-2017-15124} {CVE-2017-15268} {CVE-2017-15289} {CVE-2017-16845} {CVE-2017-17381}     {CVE-2017-18030} {CVE-2017-18043} {CVE-2017-2630} {CVE-2017-2633} {CVE-2017-5715} {CVE-2017-5753}     {CVE-2017-5754} {CVE-2017-7471} {CVE-2017-7493} {CVE-2017-8112} {CVE-2017-8309} {CVE-2017-8379}     {CVE-2017-8380} {CVE-2017-9503} {CVE-2018-11806} {CVE-2018-12617} {CVE-2018-3639} {CVE-2018-5683}     {CVE-2018-7550} {CVE-2018-7858}
    - multiboot.c: Document as fixed against CVE-2018-7550 (Jack Schwartz)  [Orabug: 27832332]     {CVE-2018-7550}
    - CVE-2017-18030: cirrus_invalidate_region() lets priv guest user cause DoS (Mark Kanda)  [Orabug:
    27832319]  {CVE-2017-18030}
    - vga: fix region calculation (Gerd Hoffmann)  [Orabug: 27832309]  {CVE-2018-7858}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2018-4285 advisory.

    - net: ignore packet size greater than INT_MAX (Jason Wang)  [Orabug: 28763782]  {CVE-2018-17963}
    - pcnet: fix possible buffer overflow (Jason Wang)  [Orabug: 28763774]  {CVE-2018-17962}
    - rtl8139: fix possible out of bound access (Jason Wang)  [Orabug: 28763765]  {CVE-2018-17958}
    - ne2000: fix possible out of bound access in ne2000_receive (Jason Wang)  [Orabug: 28763758]     {CVE-2018-10839}
    - seccomp: set the seccomp filter to all threads (Marc-Andre Lureau)  [Orabug: 28763748]  {CVE-2018-15746}
    - Document various CVEs as fixed (Mark Kanda)  [Orabug: 28763710]  {CVE-2017-10806} {CVE-2017-11334}     {CVE-2017-12809} {CVE-2017-13672} {CVE-2017-13673} {CVE-2017-13711} {CVE-2017-14167} {CVE-2017-15038}     {CVE-2017-15119} {CVE-2017-15124} {CVE-2017-15268} {CVE-2017-15289} {CVE-2017-16845} {CVE-2017-17381}     {CVE-2017-18030} {CVE-2017-18043} {CVE-2017-2630} {CVE-2017-2633} {CVE-2017-5715} {CVE-2017-5753}     {CVE-2017-5754} {CVE-2017-7471} {CVE-2017-7493} {CVE-2017-8112} {CVE-2017-8309} {CVE-2017-8379}     {CVE-2017-8380} {CVE-2017-9503} {CVE-2018-11806} {CVE-2018-12617} {CVE-2018-3639} {CVE-2018-5683}     {CVE-2018-7550} {CVE-2018-7858}
    - multiboot.c: Document as fixed against CVE-2018-7550 (Jack Schwartz)  [Orabug: 27832332]     {CVE-2018-7550}
    - CVE-2017-18030: cirrus_invalidate_region() lets priv guest user cause DoS (Mark Kanda)  [Orabug:
    27832319]  {CVE-2017-18030}
    - vga: fix region calculation (Gerd Hoffmann)  [Orabug: 27832309]  {CVE-2018-7858}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2019-4585 advisory.

    - usb-mtp: use O_NOFOLLOW and O_CLOEXEC. (Gerd Hoffmann)  [Orabug: 29216656]  {CVE-2018-16872}
    - pvrdma: add uar_read routine (Prasad J Pandit)  [Orabug: 29216658]  {CVE-2018-20191}
    - pvrdma: release ring object in case of an error (Prasad J Pandit)  [Orabug: 29216659]  {CVE-2018-20126}
    - pvrdma: check number of pages when creating rings (Prasad J Pandit)  [Orabug: 29216666]     {CVE-2018-20125}
    - pvrdma: check return value from pvrdma_idx_ring_has_ routines (Prasad J Pandit)  [Orabug: 29216672]     {CVE-2018-20216}
    - rdma: remove unused VENDOR_ERR_NO_SGE macro (Prasad J Pandit)  [Orabug: 29216678]  {CVE-2018-20124}
    - rdma: check num_sge does not exceed MAX_SGE (Prasad J Pandit)  [Orabug: 29216678]  {CVE-2018-20124}
    - Document various CVEs as fixed (Mark Kanda)  [Orabug: 29212424]  {CVE-2017-10806} {CVE-2017-11334}     {CVE-2017-12809} {CVE-2017-13672} {CVE-2017-13673} {CVE-2017-13711} {CVE-2017-14167} {CVE-2017-15038}     {CVE-2017-15119} {CVE-2017-15124} {CVE-2017-15268} {CVE-2017-15289} {CVE-2017-16845} {CVE-2017-17381}     {CVE-2017-18030} {CVE-2017-18043} {CVE-2017-2630} {CVE-2017-2633} {CVE-2017-5715} {CVE-2017-5753}     {CVE-2017-5754} {CVE-2017-7471} {CVE-2017-7493} {CVE-2017-8112} {CVE-2017-8309} {CVE-2017-8379}     {CVE-2017-8380} {CVE-2017-9503} {CVE-2018-10839} {CVE-2018-11806} {CVE-2018-12617} {CVE-2018-15746}     {CVE-2018-16847} {CVE-2018-16867} {CVE-2018-17958} {CVE-2018-17962} {CVE-2018-17963} {CVE-2018-18849}     {CVE-2018-19364} {CVE-2018-19489} {CVE-2018-3639} {CVE-2018-5683} {CVE-2018-7550} {CVE-2018-7858}

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

According to the versions of the qemu packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - Quick Emulator (Qemu) built with the VirtFS, host     directory sharing via Plan 9 File System(9pfs) support,     is vulnerable to an improper access control issue. It     could occur while accessing virtfs metadata files in     mapped-file security mode. A guest user could use this     flaw to escalate their privileges inside     guest.(CVE-2017-7493)

  - qemu-bridge-helper.c in QEMU 4.0.0 does not ensure that     a network interface name (obtained from bridge.conf or     a --br=bridge option) is limited to the IFNAMSIZ size,     which can lead to an ACL bypass.(CVE-2019-13164)

  - Qemu has a Buffer Overflow in pcnet_receive in     hw/net/pcnet.c because an incorrect integer data type     is used.(CVE-2018-17962)

  - Buffer overflow in the 'megasas_mmio_write' function in     Qemu 2.9.0 allows remote attackers to have unspecified     impact via unknown vectors.(CVE-2017-8380)

  - qemu_deliver_packet_iov in net/net.c in Qemu accepts     packet sizes greater than INT_MAX, which allows     attackers to cause a denial of service or possibly have     unspecified other impact.(CVE-2018-17963)

  - In QEMU 3.1.0, load_device_tree in device_tree.c calls     the deprecated load_image function, which has a buffer     overflow risk.(CVE-2018-20815)

  - interface_release_resource in hw/display/qxl.c in QEMU     4.0.0 has a NULL pointer dereference.(CVE-2019-12155)

  - An issue was discovered in ide_dma_cb() in     hw/ide/core.c in QEMU 2.4.0 through 4.2.0. The guest     system can crash the QEMU process in the host system     via a special SCSI_IOCTL_SEND_COMMAND. It hits an     assertion that implies that the size of successful DMA     transfers there must be a multiple of 512 (the size of     a sector). NOTE: a member of the QEMU security team     disputes the significance of this issue because a     'privileged guest user has many ways to cause similar     DoS effect, without triggering this     assert.'(CVE-2019-20175)

  - Use-after-free vulnerability in the sofree function in     slirp/socket.c in QEMU (aka Quick Emulator) allows     attackers to cause a denial of service (QEMU instance     crash) by leveraging failure to properly clear ifq_so     from pending packets.(CVE-2017-13711)

  - Qemu has a Buffer Overflow in rtl8139_do_receive in     hw/net/rtl8139.c because an incorrect integer data type     is used.(CVE-2018-17958)

  - ip_reass in ip_input.c in libslirp 4.0.0 has a     heap-based buffer overflow via a large packet because     it mishandles a case involving the first     fragment.(CVE-2019-14378)

  - m_cat in slirp/mbuf.c in Qemu has a heap-based buffer     overflow via incoming fragmented     datagrams.(CVE-2018-11806)

  - Memory leak in the audio/audio.c in QEMU (aka Quick     Emulator) allows remote attackers to cause a denial of     service (memory consumption) by repeatedly starting and     stopping audio capture.(CVE-2017-8309)

  - Memory leak in the keyboard input event handlers     support in QEMU (aka Quick Emulator) allows local guest     OS privileged users to cause a denial of service (host     memory consumption) by rapidly generating large     keyboard events.(CVE-2017-8379)

  - hw/input/ps2.c in Qemu does not validate 'rptr' and     'count' values during guest migration, leading to     out-of-bounds access(CVE-2017-16845)

  - The cirrus_invalidate_region function in     hw/display/cirrus_vga.c in Qemu allows local OS guest     privileged users to cause a denial of service     (out-of-bounds array access and QEMU process crash) via     vectors related to negative pitch.(CVE-2017-18030)

  - An out-of-bounds read/write access flaw was found in     the USB emulator of the QEMU in versions before 5.2.0.
    This issue occurs while processing USB packets from a     guest when USBDevice 'setup_len' exceeds its     'data_buf[4096]' in the do_token_in, do_token_out     routines. This flaw allows a guest user to crash the     QEMU process, resulting in a denial of service, or the     potential execution of arbitrary code with the     privileges of the QEMU process on the     host.(CVE-2020-14364)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the qemu-kvm packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - qemu-kvm is an open source virtualizer that provides     hardware emulation for the KVM hypervisor. qemu-kvm     acts as a virtual machine monitor together with the KVM     kernel modules, and emulates the hardware for a full     system such as a PC and its assocated peripherals. As     qemu-kvm requires no host kernel patches to run, it is     safe and easy to use. Security Fix(es):Memory leak in     hw/watchdog/wdt_i6300esb.c in QEMU (aka Quick Emulator)     allows local guest OS privileged users to cause a     denial of service (host memory consumption and QEMU     process crash) via a large number of device unplug     operations.(CVE-2016-10155)Memory leak in the     audio/audio.c in QEMU (aka Quick Emulator) allows     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture.(CVE-2017-8309)Memory leak in the keyboard     input event handlers support in QEMU (aka Quick     Emulator) allows local guest OS privileged users to     cause a denial of service (host memory consumption) by     rapidly generating large keyboard     events.(CVE-2017-8379)hw/input/ps2.c in Qemu does not     validate 'rptr' and 'count' values during guest     migration, leading to out-of-bounds access.
    (CVE-2017-16845)The cirrus_invalidate_region function     in hw/display/cirrus_vga.c in Qemu allows local OS     guest privileged users to cause a denial of service     (out-of-bounds array access and QEMU process crash) via     vectors related to negative pitch.(CVE-2017-18030)Quick     Emulator (Qemu) built with the VirtFS, host directory     sharing via Plan 9 File System (9pfs) support, is     vulnerable to an improper access control issue. It     could occur while accessing files on a shared host     directory. A privileged user inside guest could use     this flaw to access host file system beyond the shared     folder and potentially escalating their privileges on a     host.(CVE-2017-7471)An out-of-bounds read vulnerability     was found in the SLiRP networking implementation of the     QEMU emulator. This flaw occurs in the     icmp6_send_echoreply() routine while replying to an     ICMP echo request, also known as ping. This flaw allows     a malicious guest to leak the contents of the host     memory, resulting in possible information disclosure.
    This flaw affects versions of libslirp before     4.3.1.(CVE-2020-10756)The rc4030_write function in     hw/dma/rc4030.c in QEMU (aka Quick Emulator) allows     local guest OS administrators to cause a denial of     service (divide-by-zero error and QEMU process crash)     via a large interval timer reload value.(CVE-2016-8667)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the qemu packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - An integer overflow issue was found in the NE200 NIC     emulation. It could occur while receiving packets from     the network, if the size value was greater than     INT_MAX. Such overflow would lead to stack buffer     overflow issue. A user inside guest could use this flaw     to crash the QEMU process, resulting in DoS scenario.
    (CVE-2018-10839)

  - qmp_guest_file_read in qga/commands-posix.c and     qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent)     in QEMU 2.12.50 has an integer overflow causing a     g_malloc0() call to trigger a segmentation fault when     trying to allocate a large memory chunk. The     vulnerability can be exploited by sending a crafted QMP     command (including guest-file-read with a large count     value) to the agent via the listening     socket.(CVE-2018-12617)

  - Qemu before version 2.9 is vulnerable to an improper     link following when built with the VirtFS. A privileged     user inside guest could use this flaw to access host     file system beyond the shared folder and potentially     escalating their privileges on a host. (CVE-2016-9602)

  - Quick Emulator (QEMU), compiled with the PC System     Emulator with multiboot feature support, is vulnerable     to an OOB r/w memory access issue. The issue could     occur while loading a kernel image during the guest     boot, if mh_load_end_addr address is greater than the     mh_bss_end_addr address. A user or process could use     this flaw to potentially achieve arbitrary code     execution on a host.(CVE-2018-7550)

  - An out-of-bounds read access issue was found in the VGA     display emulator built into the Quick emulator (QEMU).
    It could occur while reading VGA memory to update     graphics display. A privileged user/process inside     guest could use this flaw to crash the QEMU process on     the host resulting in denial of service     situation.(CVE-2017-13672)

  - An assert failure issue was found in the VGA display     emulator built into the Quick emulator (QEMU). It could     occur while updating graphics display, due to     miscalculating region for dirty bitmap snapshot in     split screen mode. A privileged user/process inside     guest could use this flaw to crash the QEMU process on     the host resulting in denial of service.
    (CVE-2017-13673)

  - The Network Block Device (NBD) server in Quick Emulator     (QEMU), is vulnerable to a denial of service issue. It     could occur if a client sent large option requests,     making the server waste CPU time on reading up to 4GB     per request. A client could use this flaw to keep the     NBD server from serving other requests, resulting in     DoS.(CVE-2017-15119)

  - QEMU (aka Quick Emulator) before 2.9.0, when built with     the USB OHCI Emulation support, allows local guest OS     users to cause a denial of service (infinite loop) by     leveraging an incorrect return value, a different     vulnerability than CVE-2017-6505.(CVE-2017-9330)

  - Integer overflow in the macro ROUND_UP (n, d) in Quick     Emulator (Qemu) allows a user to cause a denial of     service (Qemu process crash). (CVE-2017-18043)

  - VNC server implementation in Quick Emulator (QEMU) was     found to be vulnerable to an unbounded memory     allocation issue, as it did not throttle the     framebuffer updates sent to its client. If the client     did not consume these updates, VNC server allocates     growing memory to hold onto this data. A malicious     remote VNC client could use this flaw to cause DoS to     the server host.(CVE-2017-15124)

  - A memory leakage issue was found in the I/O channels     websockets implementation of the Quick Emulator (QEMU).
    It could occur while sending screen updates to a     client, which is slow to read and process them further.
    A privileged guest user could use this flaw to cause a     denial of service on the host and/or potentially crash     the QEMU process instance on the host.(CVE-2017-15268)

  - Quick Emulator (QEMU), compiled with the PC System     Emulator with multiboot feature support, is vulnerable     to an OOB r/w memory access issue. The issue could     occur due to an integer overflow while loading a kernel     image during a guest boot. A user or process could use     this flaw to potentially achieve arbitrary code     execution on a host.(CVE-2017-14167)

  - Memory leak in QEMU (aka Quick Emulator), when built     with IDE AHCI Emulation support, allows local guest OS     privileged users to cause a denial of service (memory     consumption) by repeatedly hot-unplugging the AHCI     device.(CVE-2017-9373)

  - Memory leak in the serial_exit_core function in     hw/char/serial.c in QEMU (aka Quick Emulator) allows     local guest OS privileged users to cause a denial of     service (host memory consumption and QEMU process     crash) via a large number of device unplug     operations.(CVE-2017-5579)

  - ** DISPUTED ** The disas_insn function in     target/i386/translate.c in QEMU before 2.9.0, when TCG     mode without hardware acceleration is used, does not     limit the instruction size, which allows local users to     gain privileges by creating a modified basic block that     injects code into a setuid program, as demonstrated by     procmail. NOTE: the vendor has stated 'this bug does     not violate any security guarantees QEMU     makes.'(CVE-2017-8284)

  - Memory leak in the keyboard input event handlers     support in QEMU (aka Quick Emulator) allows local guest     OS privileged users to cause a denial of service (host     memory consumption) by rapidly generating large     keyboard events.(CVE-2017-8379)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

According to the versions of the qemu-kvm packages installed, the EulerOS Virtualization for ARM 64 installation on the remote host is affected by the following vulnerabilities :

  - An integer overflow issue was found in the NE200 NIC     emulation. It could occur while receiving packets from     the network, if the size value was greater than     INT_MAX. Such overflow would lead to stack buffer     overflow issue. A user inside guest could use this flaw     to crash the QEMU process, resulting in DoS scenario.
    (CVE-2018-10839)

  - qmp_guest_file_read in qga/commands-posix.c and     qga/commands-win32.c in qemu-ga (aka QEMU Guest Agent)     in QEMU 2.12.50 has an integer overflow causing a     g_malloc0() call to trigger a segmentation fault when     trying to allocate a large memory chunk. The     vulnerability can be exploited by sending a crafted QMP     command (including guest-file-read with a large count     value) to the agent via the listening     socket.(CVE-2018-12617)

  - Qemu before version 2.9 is vulnerable to an improper     link following when built with the VirtFS. A privileged     user inside guest could use this flaw to access host     file system beyond the shared folder and potentially     escalating their privileges on a host. (CVE-2016-9602)

  - Quick Emulator (QEMU), compiled with the PC System     Emulator with multiboot feature support, is vulnerable     to an OOB r/w memory access issue. The issue could     occur while loading a kernel image during the guest     boot, if mh_load_end_addr address is greater than the     mh_bss_end_addr address. A user or process could use     this flaw to potentially achieve arbitrary code     execution on a host.(CVE-2018-7550)

  - An out-of-bounds read access issue was found in the VGA     display emulator built into the Quick emulator (QEMU).
    It could occur while reading VGA memory to update     graphics display. A privileged user/process inside     guest could use this flaw to crash the QEMU process on     the host resulting in denial of service     situation.(CVE-2017-13672)

  - An assert failure issue was found in the VGA display     emulator built into the Quick emulator (QEMU). It could     occur while updating graphics display, due to     miscalculating region for dirty bitmap snapshot in     split screen mode. A privileged user/process inside     guest could use this flaw to crash the QEMU process on     the host resulting in denial of service.
    (CVE-2017-13673)

  - The Network Block Device (NBD) server in Quick Emulator     (QEMU), is vulnerable to a denial of service issue. It     could occur if a client sent large option requests,     making the server waste CPU time on reading up to 4GB     per request. A client could use this flaw to keep the     NBD server from serving other requests, resulting in     DoS.(CVE-2017-15119)

  - QEMU (aka Quick Emulator) before 2.9.0, when built with     the USB OHCI Emulation support, allows local guest OS     users to cause a denial of service (infinite loop) by     leveraging an incorrect return value, a different     vulnerability than CVE-2017-6505.(CVE-2017-9330)

  - Integer overflow in the macro ROUND_UP (n, d) in Quick     Emulator (Qemu) allows a user to cause a denial of     service (Qemu process crash). (CVE-2017-18043)

  - VNC server implementation in Quick Emulator (QEMU) was     found to be vulnerable to an unbounded memory     allocation issue, as it did not throttle the     framebuffer updates sent to its client. If the client     did not consume these updates, VNC server allocates     growing memory to hold onto this data. A malicious     remote VNC client could use this flaw to cause DoS to     the server host.(CVE-2017-15124)

  - A memory leakage issue was found in the I/O channels     websockets implementation of the Quick Emulator (QEMU).
    It could occur while sending screen updates to a     client, which is slow to read and process them further.
    A privileged guest user could use this flaw to cause a     denial of service on the host and/or potentially crash     the QEMU process instance on the host.(CVE-2017-15268)

  - Quick Emulator (QEMU), compiled with the PC System     Emulator with multiboot feature support, is vulnerable     to an OOB r/w memory access issue. The issue could     occur due to an integer overflow while loading a kernel     image during a guest boot. A user or process could use     this flaw to potentially achieve arbitrary code     execution on a host.(CVE-2017-14167)

  - Memory leak in QEMU (aka Quick Emulator), when built     with IDE AHCI Emulation support, allows local guest OS     privileged users to cause a denial of service (memory     consumption) by repeatedly hot-unplugging the AHCI     device.(CVE-2017-9373)

  - Memory leak in the serial_exit_core function in     hw/char/serial.c in QEMU (aka Quick Emulator) allows     local guest OS privileged users to cause a denial of     service (host memory consumption and QEMU process     crash) via a large number of device unplug     operations.(CVE-2017-5579)

  - ** DISPUTED ** The disas_insn function in     target/i386/translate.c in QEMU before 2.9.0, when TCG     mode without hardware acceleration is used, does not     limit the instruction size, which allows local users to     gain privileges by creating a modified basic block that     injects code into a setuid program, as demonstrated by     procmail. NOTE: the vendor has stated 'this bug does     not violate any security guarantees QEMU     makes.'(CVE-2017-8284)

  - Memory leak in the keyboard input event handlers     support in QEMU (aka Quick Emulator) allows local guest     OS privileged users to cause a denial of service (host     memory consumption) by rapidly generating large     keyboard events.(CVE-2017-8379)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Several vulnerabilities were found in qemu, a fast processor emulator :

CVE-2015-8666

Heap-based buffer overflow in QEMU when built with the Q35-chipset-based PC system emulator

CVE-2016-2198

NULL pointer dereference in ehci_caps_write in the USB EHCI support that may result in denial of service

CVE-2016-6833

Use after free while writing in the vmxnet3 device that could be used to cause a denial of service

CVE-2016-6835

Buffer overflow in vmxnet_tx_pkt_parse_headers() in vmxnet3 device that could result in denial of service

CVE-2016-8576

Infinite loop vulnerability in xhci_ring_fetch in the USB xHCI support

CVE-2016-8667 / CVE-2016-8669

Divide by zero errors in set_next_tick in the JAZZ RC4030 chipset emulator, and in serial_update_parameters of some serial devices, that could result in denial of service

CVE-2016-9602

Improper link following with VirtFS

CVE-2016-9603

Heap buffer overflow via vnc connection in the Cirrus CLGD 54xx VGA emulator support

CVE-2016-9776

Infinite loop while receiving data in the ColdFire Fast Ethernet Controller emulator

CVE-2016-9907

Memory leakage in the USB redirector usb-guest support 

CVE-2016-9911

Memory leakage in ehci_init_transfer in the USB EHCI support

CVE-2016-9914 / CVE-2016-9915 / CVE-2016-9916

Plan 9 File System (9pfs): add missing cleanup operation in FileOperations, in the handle backend and in the proxy backend driver

CVE-2016-9921 / CVE-2016-9922

Divide by zero in cirrus_do_copy in the Cirrus CLGD 54xx VGA Emulator support 

CVE-2016-10155

Memory leak in hw/watchdog/wdt_i6300esb.c allowing local guest OS privileged users to cause a denial of service via a large number of device unplug operations.

CVE-2017-2615 / CVE-2017-2620 / CVE-2017-18030 / CVE-2018-5683 / CVE-2017-7718

Out-of-bounds access issues in the Cirrus CLGD 54xx VGA emulator support, that could result in denial of service

CVE-2017-5525 / CVE-2017-5526

Memory leakage issues in the ac97 and es1370 device emulation

CVE-2017-5579

Most memory leakage in the 16550A UART emulation

CVE-2017-5667

Out-of-bounds access during multi block SDMA transfer in the SDHCI emulation support.

CVE-2017-5715

Mitigations against the Spectre v2 vulnerability. For more information please refer to https://www.qemu.org/2018/01/04/spectre/

CVE-2017-5856

Memory leak in the MegaRAID SAS 8708EM2 Host Bus Adapter emulation support

CVE-2017-5973 / CVE-2017-5987 / CVE-2017-6505

Infinite loop issues in the USB xHCI, in the transfer mode register of the SDHCI protocol, and the USB ohci_service_ed_list

CVE-2017-7377

9pfs: host memory leakage via v9fs_create

CVE-2017-7493

Improper access control issues in the host directory sharing via 9pfs support.

CVE-2017-7980

Heap-based buffer overflow in the Cirrus VGA device that could allow local guest OS users to execute arbitrary code or cause a denial of service

CVE-2017-8086

9pfs: host memory leakage via v9pfs_list_xattr

CVE-2017-8112

Infinite loop in the VMWare PVSCSI emulation

CVE-2017-8309 / CVE-2017-8379

Host memory leakage issues via the audio capture buffer and the keyboard input event handlers 

CVE-2017-9330

Infinite loop due to incorrect return value in USB OHCI that may result in denial of service

CVE-2017-9373 / CVE-2017-9374

Host memory leakage during hot unplug in IDE AHCI and USB emulated devices that could result in denial of service

CVE-2017-9503

NULL pointer dereference while processing megasas command

CVE-2017-10806

Stack buffer overflow in USB redirector

CVE-2017-10911

Xen disk may leak stack data via response ring

CVE-2017-11434

Out-of-bounds read while parsing Slirp/DHCP options

CVE-2017-14167

Out-of-bounds access while processing multiboot headers that could result in the execution of arbitrary code

CVE-2017-15038

9pfs: information disclosure when reading extended attributes

CVE-2017-15289

Out-of-bounds write access issue in the Cirrus graphic adaptor that could result in denial of service

CVE-2017-16845

Information leak in the PS/2 mouse and keyboard emulation support that could be exploited during instance migration 

CVE-2017-18043

Integer overflow in the macro ROUND_UP (n, d) that could result in denial of service

CVE-2018-7550

Incorrect handling of memory during multiboot that could may result in execution of arbitrary code

For Debian 8 'Jessie', these problems have been fixed in version 1:2.1+dfsg-12+deb8u7.

We recommend that you upgrade your qemu packages.

NOTE: Tenable Network Security has extracted the preceding description block directly from the DLA security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes several issues. These security issues were fixed :

  - CVE-2017-10911: The make_response function in the Linux     kernel allowed guest OS users to obtain sensitive     information from host OS (or other guest OS) kernel     memory by leveraging the copying of uninitialized     padding fields in Xen block-interface response     structures (bsc#1057378).

  - CVE-2017-12809: The IDE disk and CD/DVD-ROM Emulator     support allowed local guest OS privileged users to cause     a denial of service (NULL pointer dereference and QEMU     process crash) by flushing an empty CDROM device drive     (bsc#1054724).

  - CVE-2017-15289: The mode4and5 write functions allowed     local OS guest privileged users to cause a denial of     service (out-of-bounds write access and Qemu process     crash) via vectors related to dst calculation     (bsc#1063122)

  - CVE-2017-15038: Race condition in the v9fs_xattrwalk     function local guest OS users to obtain sensitive     information from host heap memory via vectors related to     reading extended attributes (bsc#1062069)

  - CVE-2017-14167: Integer overflow in the load_multiboot     function allowed local guest OS users to execute     arbitrary code on the host via crafted multiboot header     address values, which trigger an out-of-bounds write     (bsc#1057585)

  - CVE-2017-11434: The dhcp_decode function in     slirp/bootp.c allowed local guest OS users to cause a     denial of service (out-of-bounds read) via a crafted     DHCP options string (bsc#1049381)

  - CVE-2017-11334: The address_space_write_continue     function allowed local guest OS privileged users to     cause a denial of service (out-of-bounds access and     guest instance crash) by leveraging use of     qemu_map_ram_ptr to access guest ram block area     (bsc#1048902)

  - CVE-2017-13672: The VGA display emulator support allowed     local guest OS privileged users to cause a denial of     service (out-of-bounds read and QEMU process crash) via     vectors involving display update (bsc#1056334)

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks     function in hw/sd/sdhci.c allowed local OS guest     privileged users to cause a denial of service (infinite     loop and QEMU process crash) via vectors involving the     transfer mode register during multi block transfer     (bsc#1025311)

  - CVE-2017-6505: The ohci_service_ed_list function allowed     local guest OS users to cause a denial of service     (infinite loop) via vectors involving the number of link     endpoint list descriptors (bsc#1028184)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest     OS privileged users to cause a denial of service     (infinite loop and CPU consumption) via the message ring     page count (bsc#1036211)

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800)

  - CVE-2017-9374: Missing free of 's->ipacket', causes a     host memory leak, allowing for DoS (bsc#1043073)

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801)

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159)

  - CVE-2017-8379: Memory leak in the keyboard input event     handlers support allowed local guest OS privileged users     to cause a denial of service (host memory consumption)     by rapidly generating large keyboard events     (bsc#1037334)

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242)

  - CVE-2017-8380: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to an out-of-bounds     read access issue which allowed a privileged user inside     guest to read host memory resulting in DoS (bsc#1037336)

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296)

  - CVE-2017-10664: qemu-nbd did not ignore SIGPIPE, which     allowed remote attackers to cause a denial of service     (daemon crash) by disconnecting during a     server-to-client reply attempt (bsc#1046636)

  - CVE-2017-10806: Stack-based buffer overflow allowed     local guest OS users to cause a denial of service (QEMU     process crash) via vectors related to logging debug     messages (bsc#1047674)

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427)

  - CVE-2017-7377: The v9fs_create and v9fs_lcreate     functions in hw/9pfs/9p.c allowed local guest OS     privileged users to cause a denial of service (file     descriptor or memory consumption) via vectors related to     an already in-use fid (bsc#1032075)

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950)

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866)

  - CVE-2016-6835: Buffer overflow in the VMWARE VMXNET3 NIC     device support, causing an OOB read access (bsc#994605)

  - CVE-2016-6834: A infinite loop during packet     fragmentation in the VMWARE VMXNET3 NIC device support     allowed privileged user inside guest to crash the Qemu     instance resulting in DoS (bsc#994418)

  - Fix privilege escalation in TCG mode (bsc#1030624)

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Qemu: usb: ohci: infinite loop due to incorrect return value [CVE-2017-9330] (#1457698) Qemu: qemu-nbd: server breaks with SIGPIPE upon client abort [CVE-2017-10664] (#1466466) revised full fix for XSA-226 (regressed 32-bit Dom0 or backend domains)

----

full fix for XSA-226, replacing workaround drop conflict of xendomain and libvirtd as can cause problems (#1398590) add-to-physmap error paths fail to release lock on ARM [XSA-235] (#1484476) Qemu: audio:
host memory leakage via capture buffer [CVE-2017-8309] (#1446521) Qemu: input: host memory leakage via keyboard events [CVE-2017-8379] (#1446561)

----

Qemu: serial: host memory leakage 16550A UART emulation [CVE-2017-5579] (#1416162) Qemu: display: cirrus: OOB read access issue [CVE-2017-7718] (#1443444) xen: various flaws (#1481765) multiple problems with transitive grants [XSA-226, CVE-2017-12135] x86: PV privilege escalation via map_grant_ref [XSA-227, CVE-2017-12137] grant_table: Race conditions with maptrack free list handling [XSA-228, CVE-2017-12136] grant_table: possibly premature clearing of GTF_writing / GTF_reading [XSA-230, CVE-2017-12855]

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

full fix for XSA-226, replacing workaround drop conflict of xendomain and libvirtd as can cause problems (#1398590) add-to-physmap error paths fail to release lock on ARM [XSA-235] (#1484476) Qemu: audio:
host memory leakage via capture buffer [CVE-2017-8309] (#1446521) Qemu: input: host memory leakage via keyboard events [CVE-2017-8379] (#1446561)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

- CVE-2017-7718: cirrus: OOB read access issue (bz     #1443443)

  - CVE-2016-9603: cirrus: heap buffer overflow via vnc     connection (bz #1432040)

  - CVE-2017-7377: 9pfs: fix file descriptor leak (bz     #1437872)

  - CVE-2017-7980: cirrus: OOB r/w access issues in bitblt     (bz #1444372)

  - CVE-2017-8112: vmw_pvscsi: infinite loop in pvscsi_log2     (bz #1445622)

  - CVE-2017-8309: audio: host memory lekage via capture     buffer (bz #1446520)

  - CVE-2017-8379: input: host memory lekage via keyboard     events (bz #1446560)

  - CVE-2017-8380: scsi: megasas: out-of-bounds read in     megasas_mmio_write (bz #1446578)

  - CVE-2017-9060: virtio-gpu: host memory leakage in Virtio     GPU device (bz #1452598)

  - CVE-2017-9310: net: infinite loop in e1000e NIC     emulation (bz #1452623)

  - CVE-2017-9330: usb: ohci: infinite loop due to incorrect     return value (bz #1457699)

  - CVE-2017-9374: usb: ehci host memory leakage during     hotunplug (bz #1459137)

  - CVE-2017-10806: usb-redirect: stack-based buffer     overflow in debug logging (bz #1468497)

Note that Tenable Network Security has extracted the preceding description block directly from the Fedora update system website.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

This update for qemu fixes several issues.

These security issues were fixed :

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159).

  - CVE-2017-8379: Memory leak in the keyboard input event     handlers support allowed local guest OS privileged users     to cause a denial of service (host memory consumption)     by rapidly generating large keyboard events     (bsc#1037334).

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242).

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495).

  - CVE-2017-7377: The v9fs_create and v9fs_lcreate     functions in hw/9pfs/9p.c allowed local guest OS     privileged users to cause a denial of service (file     descriptor or memory consumption) via vectors related to     an already in-use fid (bsc#1032075).

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950).

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks     function in hw/sd/sdhci.c allowed local OS guest     privileged users to cause a denial of service (infinite     loop and QEMU process crash) via vectors involving the     transfer mode register during multi block transfer     (bsc#1025311).

  - CVE-2017-6505: The ohci_service_ed_list function in     hw/usb/hcd-ohci.c allowed local guest OS users to cause     a denial of service (infinite loop) via vectors     involving the number of link endpoint list descriptors     (bsc#1028184)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest     OS privileged users to cause a denial of service     (infinite loop and CPU consumption) via the message ring     page count (bsc#1036211).

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800).

  - CVE-2017-9374: Missing free of 's->ipacket', causes a     host memory leak, allowing for DoS (bsc#1043073).

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801).

  - CVE-2017-8380: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to an out-of-bounds     read access issue which allowed a privileged user inside     guest to read host memory resulting in DoS     (bsc#1037336).

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427).

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866).

  - Fix privilege escalation in TCG mode of QEMU. This is     not considered a security issue by the upstream project,     but is included as additional hardening (bsc#1030624)

  - Fix potential DoS in virtfs

  - CVE-2016-10028: The Virtio GPU Device emulator support     was vulnerable to an out of bounds memory access issue     allowing a guest user to crash the Qemu process instance     on a host, resulting in DoS (bsc#1017084, bsc#1016503)

  - CVE-2016-10029: The Virtio GPU Device emulator support     was vulnerable to an OOB read issue allowing a guest     user to crash the Qemu process instance resulting in Dos     (bsc#1017081, bsc#1016504)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296).

This non-security issue was fixed :

  - Enable MONITOR/MWAIT support for guests (bsc#1031142)

This update was imported from the SUSE:SLE-12-SP2:Update update project.

This update for qemu fixes several issues. These security issues were fixed :

  - CVE-2017-9330: USB OHCI Emulation in qemu allowed local     guest OS users to cause a denial of service (infinite     loop) by leveraging an incorrect return value     (bsc#1042159).

  - CVE-2017-8379: Memory leak in the keyboard input event     handlers support allowed local guest OS privileged users     to cause a denial of service (host memory consumption)     by rapidly generating large keyboard events     (bsc#1037334).

  - CVE-2017-8309: Memory leak in the audio/audio.c allowed     remote attackers to cause a denial of service (memory     consumption) by repeatedly starting and stopping audio     capture (bsc#1037242).

  - CVE-2017-7493: The VirtFS, host directory sharing via     Plan 9 File System(9pfs) support, was vulnerable to an     improper access control issue. It could occur while     accessing virtfs metadata files in mapped-file security     mode. A guest user could have used this flaw to escalate     their privileges inside guest (bsc#1039495).

  - CVE-2017-7377: The v9fs_create and v9fs_lcreate     functions in hw/9pfs/9p.c allowed local guest OS     privileged users to cause a denial of service (file     descriptor or memory consumption) via vectors related to     an already in-use fid (bsc#1032075).

  - CVE-2017-8086: A memory leak in the v9fs_list_xattr     function in hw/9pfs/9p-xattr.c allowed local guest OS     privileged users to cause a denial of service (memory     consumption) via vectors involving the orig_value     variable (bsc#1035950).

  - CVE-2017-5973: A infinite loop while doing control     transfer in xhci_kick_epctx allowed privileged user     inside the guest to crash the host process resulting in     DoS (bsc#1025109)

  - CVE-2017-5987: The sdhci_sdma_transfer_multi_blocks     function in hw/sd/sdhci.c allowed local OS guest     privileged users to cause a denial of service (infinite     loop and QEMU process crash) via vectors involving the     transfer mode register during multi block transfer     (bsc#1025311).

  - CVE-2017-6505: The ohci_service_ed_list function in     hw/usb/hcd-ohci.c allowed local guest OS users to cause     a denial of service (infinite loop) via vectors     involving the number of link endpoint list descriptors     (bsc#1028184)

  - CVE-2016-9603: A privileged user within the guest VM     could have caused a heap overflow in the device model     process, potentially escalating their privileges to that     of the device model process (bsc#1028656)

  - CVE-2017-7718: hw/display/cirrus_vga_rop.h allowed local     guest OS privileged users to cause a denial of service     (out-of-bounds read and QEMU process crash) via vectors     related to copying VGA data via the     cirrus_bitblt_rop_fwd_transp_ and cirrus_bitblt_rop_fwd_     functions (bsc#1034908)

  - CVE-2017-7980: An out-of-bounds r/w access issues in the     Cirrus CLGD 54xx VGA Emulator support allowed privileged     user inside guest to use this flaw to crash the Qemu     process resulting in DoS or potentially execute     arbitrary code on a host with privileges of Qemu process     on the host (bsc#1035406)

  - CVE-2017-8112: hw/scsi/vmw_pvscsi.c allowed local guest     OS privileged users to cause a denial of service     (infinite loop and CPU consumption) via the message ring     page count (bsc#1036211).

  - CVE-2017-9375: The USB xHCI controller emulator support     was vulnerable to an infinite recursive call loop issue,     which allowed a privileged user inside guest to crash     the Qemu process resulting in DoS (bsc#1042800).

  - CVE-2017-9374: Missing free of 's->ipacket', causes a     host memory leak, allowing for DoS (bsc#1043073).

  - CVE-2017-9373: The IDE AHCI Emulation support was     vulnerable to a host memory leakage issue, which allowed     a privileged user inside guest to leak host memory     resulting in DoS (bsc#1042801).

  - CVE-2017-8380: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to an out-of-bounds     read access issue which allowed a privileged user inside     guest to read host memory resulting in DoS     (bsc#1037336).

  - CVE-2016-9602: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper link following issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1020427).

  - CVE-2017-7471: The VirtFS host directory sharing via     Plan 9 File System(9pfs) support was vulnerable to an     improper access control issue which allowed a privileged     user inside guest to access host file system beyond the     shared folder and potentially escalating their     privileges on a host (bsc#1034866).

  - Fix privilege escalation in TCG mode of QEMU. This is     not considered a security issue by the upstream project,     but is included as additional hardening (bsc#1030624)

  - Fix potential DoS in virtfs

  - CVE-2016-10028: The Virtio GPU Device emulator support     was vulnerable to an out of bounds memory access issue     allowing a guest user to crash the Qemu process instance     on a host, resulting in DoS (bsc#1017084, bsc#1016503)

  - CVE-2016-10029: The Virtio GPU Device emulator support     was vulnerable to an OOB read issue allowing a guest     user to crash the Qemu process instance resulting in Dos     (bsc#1017081, bsc#1016504)

  - CVE-2017-5579: The 16550A UART serial device emulation     support was vulnerable to a memory leakage issue     allowing a privileged user to cause a DoS and/or     potentially crash the Qemu process on the host     (bsc#1021741)

  - CVE-2017-9503: The MegaRAID SAS 8708EM2 Host Bus Adapter     emulation support was vulnerable to a NULL pointer     dereference issue which allowed a privileged user inside     guest to crash the Qemu process on the host resulting in     DoS (bsc#1043296).

The update package also includes non-security fixes. See advisory for details.

Note that Tenable Network Security has extracted the preceding description block directly from the SUSE security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The remote host is affected by the vulnerability described in GLSA-201706-03 (QEMU: Multiple vulnerabilities)

    Multiple vulnerabilities have been discovered in QEMU. Please review the       CVE identifiers referenced below for details.
  Impact :

    A remote attacker might cause a Denial of Service or gain escalated       privileges from a guest VM.
  Workaround :

    There is no known workaround at this time.

The remote Ubuntu 14.04 LTS / 16.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-3289-1 advisory.

    Li Qiang discovered that QEMU incorrectly handled VirtFS directory sharing. A privileged attacker inside     the guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7377,     CVE-2017-8086)

    Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-7718)

    Li Qiang and Jiangxin discovered that QEMU incorrectly handled the Cirrus VGA device when being used with     a VNC connection. A privileged attacker inside the guest could use this issue to cause QEMU to crash,     resulting in a denial of service, or possibly execute arbitrary code on the host. In the default     installation, when QEMU is used with libvirt, attackers would be isolated by the libvirt AppArmor profile.
    (CVE-2017-7980)

    Jiang Xin discovered that QEMU incorrectly handled the audio subsystem. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. (CVE-2017-8309)

    Jiang Xin discovered that QEMU incorrectly handled the input subsystem. A privileged attacker inside the     guest could use this issue to cause QEMU to crash, resulting in a denial of service. This issue only     affected Ubuntu 16.04 LTS, Ubuntu 16.10 and Ubuntu 17.04. (CVE-2017-8379)

Tenable has extracted the preceding description block directly from the Ubuntu security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	Name	Product	Family	Severity
210314	RHEL 7 : qemu-kvm-rhev (RHSA-2017:2408)	Nessus	Red Hat Local Security Checks	medium
199537	RHEL 5 : xen (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	critical
199532	RHEL 7 : xen (Unpatched Vulnerability)	Nessus	Red Hat Local Security Checks	high
196234	RHEL 5 : qemu (Unpatched Vulnerability) (deprecated)	Nessus	Red Hat Local Security Checks	critical
180858	Oracle Linux 7 : qemu (ELSA-2018-4289)	Nessus	Oracle Linux Local Security Checks	critical
180778	Oracle Linux 7 : qemu (ELSA-2018-4285)	Nessus	Oracle Linux Local Security Checks	critical
180740	Oracle Linux 7 : qemu (ELSA-2019-4585)	Nessus	Oracle Linux Local Security Checks	critical
144829	EulerOS Virtualization 3.0.2.6 : qemu (EulerOS-SA-2021-1057)	Nessus	Huawei Local Security Checks	critical
125585	EulerOS Virtualization for ARM 64 3.0.2.0 : qemu-kvm (EulerOS-SA-2019-1633)	Nessus	Huawei Local Security Checks	critical
124947	EulerOS Virtualization 3.0.1.0 : qemu (EulerOS-SA-2019-1444)	Nessus	Huawei Local Security Checks	high
124908	EulerOS Virtualization for ARM 64 3.0.1.0 : qemu-kvm (EulerOS-SA-2019-1405)	Nessus	Huawei Local Security Checks	high
117351	Debian DLA-1497-1 : qemu security update (Spectre)	Nessus	Debian Local Security Checks	critical
104471	SUSE SLES12 Security Update : qemu (SUSE-SU-2017:2946-1)	Nessus	SuSE Local Security Checks	critical
103342	Fedora 25 : xen (2017-ed735463e3)	Nessus	Fedora Local Security Checks	high
102796	Fedora 26 : xen (2017-b8fa8e1a13)	Nessus	Fedora Local Security Checks	high
102008	Fedora 25 : 2:qemu (2017-f941184db1)	Nessus	Fedora Local Security Checks	critical
101758	openSUSE Security Update : qemu (openSUSE-2017-822)	Nessus	SuSE Local Security Checks	critical
101227	SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2017:1774-1)	Nessus	SuSE Local Security Checks	critical
100630	GLSA-201706-03 : QEMU: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical
100250	Ubuntu 14.04 LTS / 16.04 LTS : QEMU vulnerabilities (USN-3289-1)	Nessus	Ubuntu Local Security Checks	high

Detections

Analytics

CVE-2017-8379

medium

Tenable Plugins

medium

critical

high

critical

critical

critical

critical

critical

critical

high

high

critical

critical

high

high

critical

critical

critical

critical

high