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Ubuntu 14.04 LTS : Linux kernel (Xenial HWE) vulnerability (USN-3220-2)

high Nessus Plugin ID 97606

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Synopsis

The remote Ubuntu host is missing a security update.

Description

The remote Ubuntu 14.04 LTS host has a package installed that is affected by a vulnerability as referenced in the USN-3220-2 advisory.

 USN-3220-1 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.

 Alexander Popov discovered that the N_HDLC line discipline implementation in the Linux kernel contained a double-free vulnerability. A local attacker could use this to cause a denial of service (system crash) or possibly gain administrative privileges.

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

Note that Nessus has not tested for this issue 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-3220-2

Plugin Details

Severity: High

ID: 97606

File Name: ubuntu_USN-3220-2.nasl

Version: 3.12

Type: local

Agent: unix

Published: 3/8/2017

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: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.9

Temporal Score: 5.1

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

CVSS Score Source: CVE-2017-2636

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/PR:L/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-4.4.0-66-powerpc-e500mc, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-66-powerpc64-emb, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-66-lowlatency, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-66-powerpc-smp, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-66-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-66-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-4.4.0-66-powerpc64-smp

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

Exploit Ease: No known exploits are available

Patch Publication Date: 3/7/2017

Vulnerability Publication Date: 3/7/2017

Reference Information

CVE: CVE-2017-2636

USN: 3220-2