Ubuntu 14.04 LTS : linux-lts-xenial vulnerabilities (USN-3312-2)

Ubuntu Security Notice (C) 2017 Canonical, Inc. / NASL script (C) 2017 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related
patches.

Description :

USN-3312-1 fixed vulnerabilities in the Linux kernel for Ubuntu 16.04
LTS. This update provides the corresponding updates for the Linux
Hardware Enablement (HWE) kernel from Ubuntu 16.04 LTS for Ubuntu
14.04 LTS.

It was discovered that the netfilter netlink implementation in the
Linux kernel did not properly validate batch messages. A local
attacker with the CAP_NET_ADMIN capability could use this to expose
sensitive information or cause a denial of service. (CVE-2016-7917)

Qian Zhang discovered a heap-based buffer overflow in the
tipc_msg_build() function in the Linux kernel. A local attacker could
use to cause a denial of service (system crash) or possibly execute
arbitrary code with administrative privileges. (CVE-2016-8632)

It was discovered that the keyring implementation in the Linux kernel
in some situations did not prevent special internal keyrings from
being joined by userspace keyrings. A privileged local attacker could
use this to bypass module verification. (CVE-2016-9604)

It was discovered that a buffer overflow existed in the trace
subsystem in the Linux kernel. A privileged local attacker could use
this to execute arbitrary code. (CVE-2017-0605)

Dmitry Vyukov discovered that KVM implementation in the Linux kernel
improperly emulated the VMXON instruction. A local attacker in a guest
OS could use this to cause a denial of service (memory consumption) in
the host OS. (CVE-2017-2596)

Daniel Jiang discovered that a race condition existed in the ipv4 ping
socket implementation in the Linux kernel. A local privileged attacker
could use this to cause a denial of service (system crash).
(CVE-2017-2671)

Di Shen discovered that a race condition existed in the perf subsystem
of the Linux kernel. A local attacker could use this to cause a denial
of service or possibly gain administrative privileges. (CVE-2017-6001)

Eric Biggers discovered a memory leak in the keyring implementation in
the Linux kernel. A local attacker could use this to cause a denial of
service (memory consumption). (CVE-2017-7472)

Sabrina Dubroca discovered that the asynchronous cryptographic hash
(ahash) implementation in the Linux kernel did not properly handle a
full request queue. A local attacker could use this to cause a denial
of service (infinite recursion). (CVE-2017-7618)

Tuomas Haanpaa and Ari Kauppi discovered that the NFSv2 and NFSv3
server implementations in the Linux kernel did not properly handle
certain long RPC replies. A remote attacker could use this to cause a
denial of service (system crash). (CVE-2017-7645)

Tommi Rantala and Brad Spengler discovered that the memory manager in
the Linux kernel did not properly enforce the CONFIG_STRICT_DEVMEM
protection mechanism. A local attacker with access to /dev/mem could
use this to expose sensitive information or possibly execute arbitrary
code. (CVE-2017-7889)

Tuomas Haanpaa and Ari Kauppi discovered that the NFSv2 and NFSv3
server implementations in the Linux kernel did not properly check for
the end of buffer. A remote attacker could use this to craft requests
that cause a denial of service (system crash) or possibly execute
arbitrary code. (CVE-2017-7895)

It was discovered that a use-after-free vulnerability existed in the
device driver for XCeive xc2028/xc3028 tuners in the Linux kernel. A
local attacker could use this to cause a denial of service (system
crash) or possibly execute arbitrary code. (CVE-2016-7913)

Vlad Tsyrklevich discovered an integer overflow vulnerability in the
VFIO PCI driver for the Linux kernel. A local attacker with access to
a vfio PCI device file could use this to cause a denial of service
(system crash) or possibly execute arbitrary code. (CVE-2016-9083,
CVE-2016-9084).

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.

Solution :

Update the affected packages.

Risk factor :

Critical / CVSS Base Score : 10.0
(CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 7.4
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

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