Buffer overflow in the complete_emulated_mmio function in arch/x86/kvm/x86.c in the Linux kernel before 3.13.6 allows guest OS users to execute arbitrary code on the host OS by leveraging a loop that triggers an invalid memory copy affecting certain cancel_work_item data.

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

  - An information-leak vulnerability was found in the     kernel when it truncated a file to a smaller size which     consisted of an inline extent that was compressed. The     data between the new file size and the old file size     was not discarded and the number of bytes used by the     inode were not correctly decremented, which gave the     wrong report for callers of the stat(2) syscall. This     wasted metadata space and allowed for the truncated     data to be leaked, and data corruption or loss to     occur. A caller of the clone ioctl could exploit this     flaw by using only standard file-system operations     without root access to read the truncated     data.(CVE-2015-8374i1/4%0

  - crypto/pcrypt.c in the Linux kernel, before 4.14.13,     mishandles freeing instances, allowing a local user     able to access the AF_ALG-based AEAD interface     (CONFIG_CRYPTO_USER_API_AEAD) and pcrypt     (CONFIG_CRYPTO_PCRYPT) to cause a denial of service     (kfree of an incorrect pointer) or possibly have     unspecified other impact by executing a crafted     sequence of system calls. Due to the nature of the     flaw, privilege escalation cannot be fully ruled out,     although we believe it is unlikely.(CVE-2017-18075i1/4%0

  - An elevation of privilege vulnerability in the Qualcomm     Wi-Fi driver could enable a local malicious application     to execute arbitrary code within the context of the     kernel. This issue is rated as High because it first     requires compromising a privileged process. Product:
    Android. Versions: N/A. Android ID: A-32835279.
    References: QC-CR#1096945.(CVE-2017-0523i1/4%0

  - The saa7164_bus_get function in     drivers/media/pci/saa7164/saa7164-bus.c in the Linux     kernel through 4.10.14 allows local users to cause a     denial of service (out-of-bounds array access) or     possibly have unspecified other impact by changing a     certain sequence-number value, aka a 'double fetch'     vulnerability.(CVE-2017-8831i1/4%0

  - A flaw was found in the way the Linux kernel's splice()     system call validated its parameters. On certain file     systems, a local, unprivileged user could use this flaw     to write past the maximum file size, and thus crash the     system.(CVE-2014-7822i1/4%0

  - The vc4_get_bcl function in     drivers/gpu/drm/vc4/vc4_gem.c in the VideoCore DRM     driver in the Linux kernel before 4.9.7 does not set an     errno value upon certain overflow detections allowing     local users to cause a denial of service (incorrect     pointer dereference and OOPS) via inconsistent size     values in a VC4_SUBMIT_CL ioctl call.(CVE-2017-5577i1/4%0

  - In fs/ocfs2/cluster/nodemanager.c in the Linux kernel     before 4.15, local users can cause a denial of service     (NULL pointer dereference and BUG) because a required     mutex is not used.(CVE-2017-18216i1/4%0

  - A race condition issue leading to a use-after-free flaw     was found in the way the raw packet sockets     implementation in the Linux kernel networking subsystem     handled synchronization while creating the TPACKET_V3     ring buffer. A local user able to open a raw packet     socket (requires the CAP_NET_RAW capability) could use     this flaw to elevate their privileges on the     system.(CVE-2016-8655i1/4%0

  - An exploitable memory corruption flaw was found in the     Linux kernel. The append path can be erroneously     switched from UFO to non-UFO in ip_ufo_append_data()     when building an UFO packet with MSG_MORE option. If     unprivileged user namespaces are available, this flaw     can be exploited to gain root     privileges.(CVE-2017-1000112i1/4%0

  - A security flaw was found in the Linux kernel in a way     that the cleancache subsystem clears an inode after the     final file truncation (removal). The new file created     with the same inode may contain leftover pages from     cleancache and the old file data instead of the new     one.(CVE-2018-16862i1/4%0

  - arch/arm64/ include /asm/pgtable.h in the Linux kernel     before 3.15-rc5-next-20140519, as used in Android     before 2016-07-05 on Nexus 5X and 6P devices,     mishandles execute-only pages, which allows attackers     to gain privileges via a crafted application, aka     Android internal bug 28557020.(CVE-2014-9803i1/4%0

  - A heap-buffer overflow vulnerability was found in the     arcmsr_iop_message_xfer() function in     'drivers/scsi/arcmsr/arcmsr_hba.c' file in the Linux     kernel through 4.8.2. The function does not restrict a     certain length field, which allows local users to gain     privileges or cause a denial of service via an     ARCMSR_MESSAGE_WRITE_WQBUFFER control code. This can     potentially cause kernel heap corruption and arbitrary     kernel code execution.(CVE-2016-7425i1/4%0

  - An issue was discovered in the Linux kernel before     4.18.11. The ipddp_ioctl function in     drivers/net/appletalk/ipddp.c allows local users to     obtain sensitive kernel address information by     leveraging CAP_NET_ADMIN to read the ipddp_route dev     and next fields via an SIOCFINDIPDDPRT ioctl     call.(CVE-2018-20511i1/4%0

  - A memory leak in the irda_bind function in     net/irda/af_irda.c in the Linux kernel, through 4.16,     allows local users to cause a denial of service due to     a memory consumption by repeatedly binding an AF_IRDA     socket.(CVE-2018-6554i1/4%0

  - sound/core/timer.c in the Linux kernel before 4.4.1     employs a locking approach that does not consider slave     timer instances, which allows local users to cause a     denial of service (race condition, use-after-free, and     system crash) via a crafted ioctl     call.(CVE-2016-2547i1/4%0

  - Buffer overflow in the complete_emulated_mmio function     in arch/x86/kvm/x86.c in the Linux kernel before 3.13.6     allows guest OS users to execute arbitrary code on the     host OS by leveraging a loop that triggers an invalid     memory copy affecting certain cancel_work_item     data.(CVE-2014-0049i1/4%0

  - An issue was discovered in the F2FS filesystem code in     the Linux kernel in fs/f2fs/inode.c. A denial of     service due to a slab out-of-bounds read can occur for     a crafted f2fs filesystem image in which FI_EXTRA_ATTR     is set in an inode.(CVE-2018-13098i1/4%0

  - A vulnerability was found in the Linux kernel where     having malicious IP options present would cause the     ipv4_pktinfo_prepare() function to drop/free the dst.
    This could result in a system crash or possible     privilege escalation.(CVE-2017-5970i1/4%0

  - In the Linux kernel's vmw_gb_surface_define_ioctl()     function, in 'drivers/gpu/drm/vmwgfx/vmwgfx_surface.c'     file, a 'req-i1/4zmip_levels' is a user-controlled value     which is later used as a loop count limit. This allows     local unprivileged user to cause a denial of service by     a kernel lockup via a crafted ioctl call for a     '/dev/dri/renderD*' device.(CVE-2017-7346i1/4%0

  - It was found that the NFSv4 server in the Linux kernel     did not properly validate layout type when processing     NFSv4 pNFS LAYOUTGET and GETDEVICEINFO operands. A     remote attacker could use this flaw to soft-lockup the     system and thus cause denial of     service.(CVE-2017-8797i1/4%0

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 kernel packages installed, the EulerOS Virtualization installation on the remote host is affected by the following vulnerabilities :

  - The pn_recvmsg function in net/phonet/datagram.c in the     Linux kernel before 3.12.4 updates a certain length     value before ensuring that an associated data structure     has been initialized, which allows local users to     obtain sensitive information from kernel stack memory     via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg system     call.(CVE-2013-7265)

  - The mISDN_sock_recvmsg function in     drivers/isdn/mISDN/socket.c in the Linux kernel before     3.12.4 does not ensure that a certain length value is     consistent with the size of an associated data     structure, which allows local users to obtain sensitive     information from kernel memory via a (1) recvfrom, (2)     recvmmsg, or (3) recvmsg system call.(CVE-2013-7266)

  - The atalk_recvmsg function in net/appletalk/ddp.c in     the Linux kernel before 3.12.4 updates a certain length     value without ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7267)

  - The ipx_recvmsg function in net/ipx/af_ipx.c in the     Linux kernel before 3.12.4 updates a certain length     value without ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7268)

  - The nr_recvmsg function in net/netrom/af_netrom.c in     the Linux kernel before 3.12.4 updates a certain length     value without ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7269)

  - The packet_recvmsg function in net/packet/af_packet.c     in the Linux kernel before 3.12.4 updates a certain     length value before ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7270)

  - The x25_recvmsg function in net/x25/af_x25.c in the     Linux kernel before 3.12.4 updates a certain length     value without ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7271)

  - The dgram_recvmsg function in net/ieee802154/dgram.c in     the Linux kernel before 3.12.4 updates a certain length     value without ensuring that an associated data     structure has been initialized, which allows local     users to obtain sensitive information from kernel stack     memory via a (1) recvfrom, (2) recvmmsg, or (3) recvmsg     system call.(CVE-2013-7281)

  - A NULL pointer dereference flaw was found in the     rds_ib_laddr_check() function in the Linux kernel's     implementation of Reliable Datagram Sockets (RDS). A     local, unprivileged user could use this flaw to crash     the system.(CVE-2013-7339)

  - A flaw was found in the way the Linux kernel's Crypto     subsystem handled automatic loading of kernel modules.
    A local user could use this flaw to load any installed     kernel module, and thus increase the attack surface of     the running kernel.(CVE-2013-7421)

  - A flaw was found in the Linux kernel's implementation     of Unix sockets. A server polling for client-socket     data could put the peer socket on a wait list the peer     socket could then close the connection, making the     reference on the wait list no longer valid. This could     lead to bypassing the permissions on a Unix socket and     packets being injected into the stream, and could also     panic the machine (denial of service).(CVE-2013-7446)

  - The compat_sys_recvmmsg function in net/compat.c in the     Linux kernel before 3.13.2, when CONFIG_X86_X32 is     enabled, allows local users to gain privileges via a     recvmmsg system call with a crafted timeout pointer     parameter.(CVE-2014-0038)

  - Buffer overflow in the complete_emulated_mmio function     in arch/x86/kvm/x86.c in the Linux kernel before 3.13.6     allows guest OS users to execute arbitrary code on the     host OS by leveraging a loop that triggers an invalid     memory copy affecting certain cancel_work_item     data.(CVE-2014-0049)

  - The cifs_iovec_write function in fs/cifs/file.c in the     Linux kernel through 3.13.5 does not properly handle     uncached write operations that copy fewer than the     requested number of bytes, which allows local users to     obtain sensitive information from kernel memory, cause     a denial of service (memory corruption and system     crash), or possibly gain privileges via a writev system     call with a crafted pointer.(CVE-2014-0069)

  - drivers/vhost/net.c in the Linux kernel before 3.13.10,     when mergeable buffers are disabled, does not properly     validate packet lengths, which allows guest OS users to     cause a denial of service (memory corruption and host     OS crash) or possibly gain privileges on the host OS     via crafted packets, related to the handle_rx and     get_rx_bufs functions.(CVE-2014-0077)

  - Race condition in the inet_frag_intern function in     net/ipv4/inet_fragment.c in the Linux kernel through     3.13.6 allows remote attackers to cause a denial of     service (use-after-free error) or possibly have     unspecified other impact via a large series of     fragmented ICMP Echo Request packets to a system with a     heavy CPU load.(CVE-2014-0100)

  - A flaw was found in the way the Linux kernel processed     an authenticated COOKIE_ECHO chunk during the     initialization of an SCTP connection. A remote attacker     could use this flaw to crash the system by initiating a     specially crafted SCTP handshake in order to trigger a     NULL pointer dereference on the system.(CVE-2014-0101)

  - The keyring_detect_cycle_iterator function in     security/keys/keyring.c in the Linux kernel through     3.13.6 does not properly determine whether keyrings are     identical, which allows local users to cause a denial     of service (OOPS) via crafted keyctl     commands.(CVE-2014-0102)

  - Use-after-free vulnerability in the skb_segment     function in net/core/skbuff.c in the Linux kernel     through 3.13.6 allows attackers to obtain sensitive     information from kernel memory by leveraging the     absence of a certain orphaning     operation.(CVE-2014-0131)

  - The ioapic_deliver function in virt/kvm/ioapic.c in the     Linux kernel through 3.14.1 does not properly validate     the kvm_irq_delivery_to_apic return value, which allows     guest OS users to cause a denial of service (host OS     crash) via a crafted entry in the redirection table of     an I/O APIC. NOTE: the affected code was moved to the     ioapic_service function before the vulnerability was     announced.(CVE-2014-0155)

  - It was found that the permission checks performed by     the Linux kernel when a netlink message was received     were not sufficient. A local, unprivileged user could     potentially bypass these restrictions by passing a     netlink socket as stdout or stderr to a more privileged     process and altering the output of this     process.(CVE-2014-0181)

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.

The remote OracleVM system is missing necessary patches to address critical security updates : please see Oracle VM Security Advisory OVMSA-2017-0057 for details.

The remote Oracle Linux 6 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2014-3034 advisory.

    - n_tty: Fix n_tty_write crash when echoing in raw mode (Peter Hurley) [Orabug: 18754908] {CVE-2014-0196}     {CVE-2014-0196}
    - aacraid: missing capable() check in compat ioctl (Dan Carpenter) [Orabug: 18721960] {CVE-2013-6383}
    - vhost: fix total length when packets are too short (Michael S. Tsirkin) [Orabug: 18721975]     {CVE-2014-0077}
    - ipv6: don't set DST_NOCOUNT for remotely added routes (Sabrina Dubroca) [Orabug: 18681501]     {CVE-2014-2309}
    - kvm: x86: fix emulator buffer overflow (CVE-2014-0049) (Andrew Honig) [Orabug: 18681519] {CVE-2014-0049}
    - net: ipv4: current group_info should be put after using. (Wang, Xiaoming) [Orabug: 18603519]     {CVE-2014-2851}

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.

A flaw was discovered in the Kernel Virtual Machine (KVM) subsystem of the Linux kernel. A guest OS user could exploit this flaw to execute arbitrary code on the host OS. (CVE-2014-0049)

Al Viro discovered an error in how CIFS in the Linux kernel handles uncached write operations. An unprivileged local user could exploit this flaw to cause a denial of service (system crash), obtain sensitive information from kernel memory, or possibly gain privileges.
(CVE-2014-0069).

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

This kernel update contains a number of CVE fixes, all users are encouraged to update.

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

ID	Name	Product	Family	Severity
127146	NewStart CGSL MAIN 5.04 : kernel Multiple Vulnerabilities (NS-SA-2019-0004)	Nessus	NewStart CGSL Local Security Checks	high
124806	EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1482)	Nessus	Huawei Local Security Checks	high
124801	EulerOS Virtualization 3.0.1.0 : kernel (EulerOS-SA-2019-1477)	Nessus	Huawei Local Security Checks	medium
99163	OracleVM 3.3 : Unbreakable / etc (OVMSA-2017-0057) (Dirty COW)	Nessus	OracleVM Local Security Checks	critical
74101	Oracle Linux 6 : Unbreakable Enterprise kernel (ELSA-2014-3034)	Nessus	Oracle Linux Local Security Checks	high
73728	Ubuntu 13.10 : linux vulnerabilities (USN-2179-1)	Nessus	Ubuntu Local Security Checks	high
73727	Ubuntu 12.10 : linux vulnerabilities (USN-2178-1)	Nessus	Ubuntu Local Security Checks	high
73726	Ubuntu 12.04 LTS : linux-lts-saucy vulnerabilities (USN-2177-1)	Nessus	Ubuntu Local Security Checks	high
73725	Ubuntu 12.04 LTS : linux-lts-raring vulnerabilities (USN-2176-1)	Nessus	Ubuntu Local Security Checks	high
73724	Ubuntu 12.04 LTS : linux-lts-quantal vulnerabilities (USN-2175-1)	Nessus	Ubuntu Local Security Checks	high
72891	Fedora 19 : kernel-3.13.5-103.fc19 (2014-3448)	Nessus	Fedora Local Security Checks	high
72870	Fedora 20 : kernel-3.13.5-202.fc20 (2014-3442)	Nessus	Fedora Local Security Checks	high

Detections

Analytics

CVE-2014-0049

high

Tenable Plugins

high

high

medium

critical

high

high

high

high

high

high

high

high