The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.

qemu was updated to fix 21 security issues. These security issues were fixed :

  - CVE-2014-5388: Off-by-one error in the pci_read function     in the ACPI PCI hotplug interface (hw/acpi/pcihp.c) in     QEMU allowed local guest users to obtain sensitive     information and have other unspecified impact related to     a crafted PCI device that triggers memory corruption     (bsc#893323).

  - CVE-2015-6815: e1000 NIC emulation support was     vulnerable to an infinite loop issue. A privileged user     inside guest could have used this flaw to crash the Qemu     instance resulting in DoS. (bsc#944697).

  - CVE-2016-2391: The ohci_bus_start function in the USB     OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU     allowed local guest OS administrators to cause a denial     of service (NULL pointer dereference and QEMU process     crash) via vectors related to multiple eof_timers     (bsc#967013).

  - CVE-2016-2392: The is_rndis function in the USB Net     device emulator (hw/usb/dev-network.c) in QEMU did not     properly validate USB configuration descriptor objects,     which allowed local guest OS administrators to cause a     denial of service (NULL pointer dereference and QEMU     process crash) via vectors involving a remote NDIS     control message packet (bsc#967012).

  - CVE-2016-4453: The vmsvga_fifo_run function in     hw/display/vmware_vga.c in QEMU allowed local guest OS     administrators to cause a denial of service (infinite     loop and QEMU process crash) via a VGA command     (bsc#982223).

  - CVE-2016-4454: The vmsvga_fifo_read_raw function in     hw/display/vmware_vga.c in QEMU allowed local guest OS     administrators to obtain sensitive host memory     information or cause a denial of service (QEMU process     crash) by changing FIFO registers and issuing a VGA     command, which triggers an out-of-bounds read     (bsc#982222).

  - CVE-2016-5105: The megasas_dcmd_cfg_read function in     hw/scsi/megasas.c in QEMU, when built with MegaRAID SAS     8708EM2 Host Bus Adapter emulation support, used an     uninitialized variable, which allowed local guest     administrators to read host memory via vectors involving     a MegaRAID Firmware Interface (MFI) command     (bsc#982017).

  - CVE-2016-5106: The megasas_dcmd_set_properties function     in hw/scsi/megasas.c in QEMU, when built with MegaRAID     SAS 8708EM2 Host Bus Adapter emulation support, allowed     local guest administrators to cause a denial of service     (out-of-bounds write access) via vectors involving a     MegaRAID Firmware Interface (MFI) command (bsc#982018).

  - CVE-2016-5107: The megasas_lookup_frame function in     QEMU, when built with MegaRAID SAS 8708EM2 Host Bus     Adapter emulation support, allowed local guest OS     administrators to cause a denial of service     (out-of-bounds read and crash) via unspecified vectors     (bsc#982019).

  - CVE-2016-5126: Heap-based buffer overflow in the     iscsi_aio_ioctl function in block/iscsi.c in QEMU     allowed local guest OS users to cause a denial of     service (QEMU process crash) or possibly execute     arbitrary code via a crafted iSCSI asynchronous I/O     ioctl call (bsc#982285).

  - CVE-2016-5238: The get_cmd function in hw/scsi/esp.c in     QEMU allowed local guest OS administrators to cause a     denial of service (out-of-bounds write and QEMU process     crash) via vectors related to reading from the     information transfer buffer in non-DMA mode     (bsc#982959).

  - CVE-2016-5337: The megasas_ctrl_get_info function in     hw/scsi/megasas.c in QEMU allowed local guest OS     administrators to obtain sensitive host memory     information via vectors related to reading device     control information (bsc#983961).

  - CVE-2016-5338: The (1) esp_reg_read and (2)     esp_reg_write functions in hw/scsi/esp.c in QEMU allowed     local guest OS administrators to cause a denial of     service (QEMU process crash) or execute arbitrary code     on the QEMU host via vectors related to the information     transfer buffer (bsc#983982).

  - CVE-2016-5403: The virtqueue_pop function in     hw/virtio/virtio.c in QEMU allowed local guest OS     administrators to cause a denial of service (memory     consumption and QEMU process crash) by submitting     requests without waiting for completion (bsc#991080).

  - CVE-2016-6490: Infinite loop in the virtio framework. A     privileged user inside the guest could have used this     flaw to crash the Qemu instance on the host resulting in     DoS (bsc#991466).

  - CVE-2016-6833: Use-after-free issue in the VMWARE     VMXNET3 NIC device support. A privileged user inside     guest could have used this issue to crash the Qemu     instance resulting in DoS (bsc#994774).

  - CVE-2016-6836: VMWARE VMXNET3 NIC device support was     leaging information leakage. A privileged user inside     guest could have used this to leak host memory bytes to     a guest (bsc#994760).

  - CVE-2016-6888: Integer overflow in packet initialisation     in VMXNET3 device driver. A privileged user inside guest     could have used this flaw to crash the Qemu instance     resulting in DoS (bsc#994771).

  - CVE-2016-7116: Host directory sharing via Plan 9 File     System(9pfs) was vulnerable to a directory/path     traversal issue. A privileged user inside guest could     have used this flaw to access undue files on the host     (bsc#996441).

  - CVE-2016-7155: In the VMWARE PVSCSI paravirtual SCSI bus     a OOB access and/or infinite loop issue could have     allowed a privileged user inside guest to crash the Qemu     process resulting in DoS (bsc#997858).

  - CVE-2016-7156: In the VMWARE PVSCSI paravirtual SCSI bus     a infinite loop issue could have allowed a privileged     user inside guest to crash the Qemu process resulting in     DoS (bsc#997859).

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 was updated to fix 19 security issues.

These security issues were fixed :

  - CVE-2016-2392: The is_rndis function in the USB Net     device emulator (hw/usb/dev-network.c) in QEMU did not     properly validate USB configuration descriptor objects,     which allowed local guest OS administrators to cause a     denial of service (NULL pointer dereference and QEMU     process crash) via vectors involving a remote NDIS     control message packet (bsc#967012)

  - CVE-2016-2391: The ohci_bus_start function in the USB     OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU     allowed local guest OS administrators to cause a denial     of service (NULL pointer dereference and QEMU process     crash) via vectors related to multiple eof_timers     (bsc#967013)

  - CVE-2016-5106: The megasas_dcmd_set_properties function     in hw/scsi/megasas.c in QEMU, when built with MegaRAID     SAS 8708EM2 Host Bus Adapter emulation support, allowed     local guest administrators to cause a denial of service     (out-of-bounds write access) via vectors involving a     MegaRAID Firmware Interface (MFI) command (bsc#982018)

  - CVE-2016-5105: The megasas_dcmd_cfg_read function in     hw/scsi/megasas.c in QEMU, when built with MegaRAID SAS     8708EM2 Host Bus Adapter emulation support, used an     uninitialized variable, which allowed local guest     administrators to read host memory via vectors involving     a MegaRAID Firmware Interface (MFI) command (bsc#982017)

  - CVE-2016-5107: The megasas_lookup_frame function in     QEMU, when built with MegaRAID SAS 8708EM2 Host Bus     Adapter emulation support, allowed local guest OS     administrators to cause a denial of service     (out-of-bounds read and crash) via unspecified vectors     (bsc#982019)

  - CVE-2016-5126: Heap-based buffer overflow in the     iscsi_aio_ioctl function in block/iscsi.c in QEMU     allowed local guest OS users to cause a denial of     service (QEMU process crash) or possibly execute     arbitrary code via a crafted iSCSI asynchronous I/O     ioctl call (bsc#982285)

  - CVE-2016-4454: The vmsvga_fifo_read_raw function in     hw/display/vmware_vga.c in QEMU allowed local guest OS     administrators to obtain sensitive host memory     information or cause a denial of service (QEMU process     crash) by changing FIFO registers and issuing a VGA     command, which triggers an out-of-bounds read     (bsc#982222)

  - CVE-2016-4453: The vmsvga_fifo_run function in     hw/display/vmware_vga.c in QEMU allowed local guest OS     administrators to cause a denial of service (infinite     loop and QEMU process crash) via a VGA command     (bsc#982223)

  - CVE-2016-5338: The (1) esp_reg_read and (2)     esp_reg_write functions in hw/scsi/esp.c in QEMU allowed     local guest OS administrators to cause a denial of     service (QEMU process crash) or execute arbitrary code     on the QEMU host via vectors related to the information     transfer buffer (bsc#983982)

  - CVE-2016-5337: The megasas_ctrl_get_info function in     hw/scsi/megasas.c in QEMU allowed local guest OS     administrators to obtain sensitive host memory     information via vectors related to reading device     control information (bsc#983961)

  - CVE-2016-5238: The get_cmd function in hw/scsi/esp.c in     QEMU allowed local guest OS administrators to cause a     denial of service (out-of-bounds write and QEMU process     crash) via vectors related to reading from the     information transfer buffer in non-DMA mode (bsc#982959)

  - CVE-2016-5403: The virtqueue_pop function in     hw/virtio/virtio.c in QEMU allowed local guest OS     administrators to cause a denial of service (memory     consumption and QEMU process crash) by submitting     requests without waiting for completion (bsc#991080)

  - CVE-2016-6490: Infinite loop in the virtio framework. A     privileged user inside the guest could have used this     flaw to crash the Qemu instance on the host resulting in     DoS (bsc#991466)

  - CVE-2016-6888: Integer overflow in packet initialisation     in VMXNET3 device driver. A privileged user inside guest     could have used this flaw to crash the Qemu instance     resulting in DoS (bsc#994771)

  - CVE-2016-6833: Use-after-free issue in the VMWARE     VMXNET3 NIC device support. A privileged user inside     guest could have used this issue to crash the Qemu     instance resulting in DoS (bsc#994774)

  - CVE-2016-7116: Host directory sharing via Plan 9 File     System(9pfs) was vulnerable to a directory/path     traversal issue. A privileged user inside guest could     have used this flaw to access undue files on the host     (bsc#996441)

  - CVE-2016-6836: VMWARE VMXNET3 NIC device support was     leaging information leakage. A privileged user inside     guest could have used this to leak host memory bytes to     a guest (bsc#994760)

  - CVE-2016-7155: In the VMWARE PVSCSI paravirtual SCSI bus     a OOB access and/or infinite loop issue could have     allowed a privileged user inside guest to crash the Qemu     process resulting in DoS (bsc#997858)

  - CVE-2016-7156: In the VMWARE PVSCSI paravirtual SCSI bus     a infinite loop issue could have allowed a privileged     user inside guest to crash the Qemu process resulting in     DoS (bsc#997859)

This non-security issue was fixed :

  - bsc#1000048: Fix migration failure where target host is     a soon to be released SLES 12 SP2. Qemu's spice code     gets an assertion.

This update was imported from the SUSE:SLE-12-SP1:Update update project.

kvm was updated to fix 16 security issues. These security issues were fixed :

  - CVE-2015-6815: e1000 NIC emulation support was     vulnerable to an infinite loop issue. A privileged user     inside guest could have used this flaw to crash the Qemu     instance resulting in DoS. (bsc#944697).

  - CVE-2016-2391: The ohci_bus_start function in the USB     OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU     allowed local guest OS administrators to cause a denial     of service (NULL pointer dereference and QEMU process     crash) via vectors related to multiple eof_timers     (bsc#967013).

  - CVE-2016-2392: The is_rndis function in the USB Net     device emulator (hw/usb/dev-network.c) in QEMU did not     properly validate USB configuration descriptor objects,     which allowed local guest OS administrators to cause a     denial of service (NULL pointer dereference and QEMU     process crash) via vectors involving a remote NDIS     control message packet (bsc#967012).

  - CVE-2016-4453: The vmsvga_fifo_run function in     hw/display/vmware_vga.c in QEMU allowed local guest OS     administrators to cause a denial of service (infinite     loop and QEMU process crash) via a VGA command     (bsc#982223).

  - CVE-2016-4454: The vmsvga_fifo_read_raw function in     hw/display/vmware_vga.c in QEMU allowed local guest OS     administrators to obtain sensitive host memory     information or cause a denial of service (QEMU process     crash) by changing FIFO registers and issuing a VGA     command, which triggers an out-of-bounds read     (bsc#982222).

  - CVE-2016-5105: The megasas_dcmd_cfg_read function in     hw/scsi/megasas.c in QEMU, when built with MegaRAID SAS     8708EM2 Host Bus Adapter emulation support, used an     uninitialized variable, which allowed local guest     administrators to read host memory via vectors involving     a MegaRAID Firmware Interface (MFI) command     (bsc#982017).

  - CVE-2016-5106: The megasas_dcmd_set_properties function     in hw/scsi/megasas.c in QEMU, when built with MegaRAID     SAS 8708EM2 Host Bus Adapter emulation support, allowed     local guest administrators to cause a denial of service     (out-of-bounds write access) via vectors involving a     MegaRAID Firmware Interface (MFI) command (bsc#982018).

  - CVE-2016-5107: The megasas_lookup_frame function in     QEMU, when built with MegaRAID SAS 8708EM2 Host Bus     Adapter emulation support, allowed local guest OS     administrators to cause a denial of service     (out-of-bounds read and crash) via unspecified vectors     (bsc#982019).

  - CVE-2016-5126: Heap-based buffer overflow in the     iscsi_aio_ioctl function in block/iscsi.c in QEMU     allowed local guest OS users to cause a denial of     service (QEMU process crash) or possibly execute     arbitrary code via a crafted iSCSI asynchronous I/O     ioctl call (bsc#982285).

  - CVE-2016-5238: The get_cmd function in hw/scsi/esp.c in     QEMU allowed local guest OS administrators to cause a     denial of service (out-of-bounds write and QEMU process     crash) via vectors related to reading from the     information transfer buffer in non-DMA mode     (bsc#982959).

  - CVE-2016-5337: The megasas_ctrl_get_info function in     hw/scsi/megasas.c in QEMU allowed local guest OS     administrators to obtain sensitive host memory     information via vectors related to reading device     control information (bsc#983961).

  - CVE-2016-5338: The (1) esp_reg_read and (2)     esp_reg_write functions in hw/scsi/esp.c in QEMU allowed     local guest OS administrators to cause a denial of     service (QEMU process crash) or execute arbitrary code     on the QEMU host via vectors related to the information     transfer buffer (bsc#983982).

  - CVE-2016-5403: The virtqueue_pop function in     hw/virtio/virtio.c in QEMU allowed local guest OS     administrators to cause a denial of service (memory     consumption and QEMU process crash) by submitting     requests without waiting for completion (bsc#991080).

  - CVE-2016-6490: Infinite loop in the virtio framework. A     privileged user inside the guest could have used this     flaw to crash the Qemu instance on the host resulting in     DoS (bsc#991466).

  - CVE-2016-7116: Host directory sharing via Plan 9 File     System(9pfs) was vulnerable to a directory/path     traversal issue. A privileged user inside guest could     have used this flaw to access undue files on the host     (bsc#996441).

  - CVE-2014-7815: The set_pixel_format function in ui/vnc.c     in QEMU allowed remote attackers to cause a denial of     service (crash) via a small bytes_per_pixel value     (bsc#902737).

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 was updated to fix 19 security issues. These security issues were fixed :

  - CVE-2016-2392: The is_rndis function in the USB Net     device emulator (hw/usb/dev-network.c) in QEMU did not     properly validate USB configuration descriptor objects,     which allowed local guest OS administrators to cause a     denial of service (NULL pointer dereference and QEMU     process crash) via vectors involving a remote NDIS     control message packet (bsc#967012)

  - CVE-2016-2391: The ohci_bus_start function in the USB     OHCI emulation support (hw/usb/hcd-ohci.c) in QEMU     allowed local guest OS administrators to cause a denial     of service (NULL pointer dereference and QEMU process     crash) via vectors related to multiple eof_timers     (bsc#967013)

  - CVE-2016-5106: The megasas_dcmd_set_properties function     in hw/scsi/megasas.c in QEMU, when built with MegaRAID     SAS 8708EM2 Host Bus Adapter emulation support, allowed     local guest administrators to cause a denial of service     (out-of-bounds write access) via vectors involving a     MegaRAID Firmware Interface (MFI) command (bsc#982018)

  - CVE-2016-5105: The megasas_dcmd_cfg_read function in     hw/scsi/megasas.c in QEMU, when built with MegaRAID SAS     8708EM2 Host Bus Adapter emulation support, used an     uninitialized variable, which allowed local guest     administrators to read host memory via vectors involving     a MegaRAID Firmware Interface (MFI) command (bsc#982017)

  - CVE-2016-5107: The megasas_lookup_frame function in     QEMU, when built with MegaRAID SAS 8708EM2 Host Bus     Adapter emulation support, allowed local guest OS     administrators to cause a denial of service     (out-of-bounds read and crash) via unspecified vectors     (bsc#982019)

  - CVE-2016-5126: Heap-based buffer overflow in the     iscsi_aio_ioctl function in block/iscsi.c in QEMU     allowed local guest OS users to cause a denial of     service (QEMU process crash) or possibly execute     arbitrary code via a crafted iSCSI asynchronous I/O     ioctl call (bsc#982285)

  - CVE-2016-4454: The vmsvga_fifo_read_raw function in     hw/display/vmware_vga.c in QEMU allowed local guest OS     administrators to obtain sensitive host memory     information or cause a denial of service (QEMU process     crash) by changing FIFO registers and issuing a VGA     command, which triggers an out-of-bounds read     (bsc#982222)

  - CVE-2016-4453: The vmsvga_fifo_run function in     hw/display/vmware_vga.c in QEMU allowed local guest OS     administrators to cause a denial of service (infinite     loop and QEMU process crash) via a VGA command     (bsc#982223)

  - CVE-2016-5338: The (1) esp_reg_read and (2)     esp_reg_write functions in hw/scsi/esp.c in QEMU allowed     local guest OS administrators to cause a denial of     service (QEMU process crash) or execute arbitrary code     on the QEMU host via vectors related to the information     transfer buffer (bsc#983982)

  - CVE-2016-5337: The megasas_ctrl_get_info function in     hw/scsi/megasas.c in QEMU allowed local guest OS     administrators to obtain sensitive host memory     information via vectors related to reading device     control information (bsc#983961)

  - CVE-2016-5238: The get_cmd function in hw/scsi/esp.c in     QEMU allowed local guest OS administrators to cause a     denial of service (out-of-bounds write and QEMU process     crash) via vectors related to reading from the     information transfer buffer in non-DMA mode (bsc#982959)

  - CVE-2016-5403: The virtqueue_pop function in     hw/virtio/virtio.c in QEMU allowed local guest OS     administrators to cause a denial of service (memory     consumption and QEMU process crash) by submitting     requests without waiting for completion (bsc#991080)

  - CVE-2016-6490: Infinite loop in the virtio framework. A     privileged user inside the guest could have used this     flaw to crash the Qemu instance on the host resulting in     DoS (bsc#991466)

  - CVE-2016-6888: Integer overflow in packet initialisation     in VMXNET3 device driver. A privileged user inside guest     could have used this flaw to crash the Qemu instance     resulting in DoS (bsc#994771)

  - CVE-2016-6833: Use-after-free issue in the VMWARE     VMXNET3 NIC device support. A privileged user inside     guest could have used this issue to crash the Qemu     instance resulting in DoS (bsc#994774)

  - CVE-2016-7116: Host directory sharing via Plan 9 File     System(9pfs) was vulnerable to a directory/path     traversal issue. A privileged user inside guest could     have used this flaw to access undue files on the host     (bsc#996441)

  - CVE-2016-6836: VMWARE VMXNET3 NIC device support was     leaging information leakage. A privileged user inside     guest could have used this to leak host memory bytes to     a guest (bsc#994760)

  - CVE-2016-7155: In the VMWARE PVSCSI paravirtual SCSI bus     a OOB access and/or infinite loop issue could have     allowed a privileged user inside guest to crash the Qemu     process resulting in DoS (bsc#997858)

  - CVE-2016-7156: In the VMWARE PVSCSI paravirtual SCSI bus     a infinite loop issue could have allowed a privileged     user inside guest to crash the Qemu process resulting in     DoS (bsc#997859)

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.

- CVE-2016-6351: scsi: esp: OOB write access in esp_do_dma     (bz #1360600)

  - CVE-2016-6833: vmxnet3: use-after-free (bz #1368982)

  - CVE-2016-6490: virtio: infinite loop in virtqueue_pop     (bz #1361428)

  - CVE-2016-7156: pvscsi: infinite loop when building SG     list (bz #1373480)

  - CVE-2016-7170: vmware_vga: OOB stack memory access (bz     #1374709)

  - CVE-2016-7161: net: Heap overflow in     xlnx.xps-ethernetlite (bz #1379298)

  - CVE-2016-7466: usb: xhci memory leakage during device     unplug (bz #1377838)

  - CVE-2016-7422: virtio: NULL pointer dereference (bz     #1376756)

  - CVE-2016-7908: net: Infinite loop in mcf_fec_do_tx (bz     #1381193)

  - CVE-2016-8576: usb: xHCI: infinite loop vulnerability     (bz #1382322)

  - CVE-2016-7995: usb: hcd-ehci: memory leak (bz #1382669)

  - Don't depend on edk2 roms where they aren't available     (bz #1373576)

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.

The remote host is affected by the vulnerability described in GLSA-201609-01 (QEMU: Multiple vulnerabilities)

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

    Local users within a guest QEMU environment can execute arbitrary code       within the host or a cause a Denial of Service condition of the QEMU       guest process.
  Workaround :

    There is no known workaround at this time.

ID	Name	Product	Family	Severity
94758	SUSE SLES12 Security Update : qemu (SUSE-SU-2016:2781-1)	Nessus	SuSE Local Security Checks	high
94309	openSUSE Security Update : qemu (openSUSE-2016-1234)	Nessus	SuSE Local Security Checks	high
94283	SUSE SLES11 Security Update : kvm (SUSE-SU-2016:2628-1)	Nessus	SuSE Local Security Checks	high
94277	SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:2589-1)	Nessus	SuSE Local Security Checks	high
94122	Fedora 24 : 2:qemu (2016-a56fb613a8)	Nessus	Fedora Local Security Checks	critical
93697	GLSA-201609-01 : QEMU: Multiple vulnerabilities	Nessus	Gentoo Local Security Checks	critical

Detections

Analytics

CVE-2016-6490

medium

Tenable Plugins

high

high

high

high

critical

critical