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Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerabilities (USN-3161-2)

critical Nessus Plugin ID 95996

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Synopsis

The remote Ubuntu host is missing one or more security updates.

Description

The remote Ubuntu 14.04 LTS host has a package installed that is affected by multiple vulnerabilities as referenced in the USN-3161-2 advisory.

 USN-3161-1 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.

 Tilman Schmidt and Sasha Levin discovered a use-after-free condition in the TTY implementation in the Linux kernel. A local attacker could use this to expose sensitive information (kernel memory).
 (CVE-2015-8964)

 It was discovered that the Video For Linux Two (v4l2) implementation in the Linux kernel did not properly handle multiple planes when processing a VIDIOC_DQBUF ioctl(). A local attacker could use this to cause a denial of service (system crash) or possibly execute arbitrary code. (CVE-2016-4568)

 CAI Qian discovered that shared bind mounts in a mount namespace exponentially added entries without restriction to the Linux kernel's mount table. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-6213)

 It was discovered that the KVM implementation for x86/x86_64 in the Linux kernel could dereference a null pointer. An attacker in a guest virtual machine could use this to cause a denial of service (system crash) in the KVM host. (CVE-2016-8630)

 Eyal Itkin discovered that the IP over IEEE 1394 (FireWire) implementation in the Linux kernel contained a buffer overflow when handling fragmented packets. A remote attacker could use this to possibly execute arbitrary code with administrative privileges. (CVE-2016-8633)

 Marco Grassi discovered that the TCP implementation in the Linux kernel mishandles socket buffer (skb) truncation. A local attacker could use this to cause a denial of service (system crash). (CVE-2016-8645)

 Andrey Konovalov discovered that the SCTP implementation in the Linux kernel improperly handled validation of incoming data. A remote attacker could use this to cause a denial of service (system crash).
 (CVE-2016-9555)

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.

Solution

Update the affected kernel package.

See Also

https://ubuntu.com/security/notices/USN-3161-2

Plugin Details

Severity: Critical

ID: 95996

File Name: ubuntu_USN-3161-2.nasl

Version: 3.10

Type: local

Agent: unix

Published: 12/21/2016

Updated: 8/27/2024

Supported Sensors: Agentless Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

CVSS Score Source: CVE-2016-9555

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-57-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-57-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-57-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-57-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-57-powerpc64-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-57-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-57-lowlatency

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 12/20/2016

Vulnerability Publication Date: 5/23/2016

Reference Information

CVE: CVE-2015-8964, CVE-2016-4568, CVE-2016-6213, CVE-2016-8630, CVE-2016-8633, CVE-2016-8645, CVE-2016-9555

USN: 3161-2