Ubuntu 14.04 LTS : linux vulnerabilities (USN-2318-1)

high Nessus Plugin ID 77237

Synopsis

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

Description

Eric W. Biederman discovered a flaw with the mediation of mount flags in the Linux kernel's user namespace subsystem. An unprivileged user could exploit this flaw to by-pass mount restrictions, and potentially gain administrative privileges. (CVE-2014-5207)

Kenton Varda discovered a flaw with read-only bind mounds when used with user namespaces. An unprivileged local user could exploit this flaw to gain full write privileges to a mount that should be read only. (CVE-2014-5206).

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 linux-image-3.13-generic, linux-image-3.13-generic-lpae and / or linux-image-3.13-lowlatency packages.

See Also

https://usn.ubuntu.com/2318-1/

Plugin Details

Severity: High

ID: 77237

File Name: ubuntu_USN-2318-1.nasl

Version: 1.11

Type: local

Agent: unix

Published: 8/18/2014

Updated: 1/19/2021

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.2

Temporal Score: 5.6

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

Temporal Vector: E:POC/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13-generic, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13-generic-lpae, p-cpe:/a:canonical:ubuntu_linux:linux-image-3.13-lowlatency, cpe:/o:canonical:ubuntu_linux:14.04

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 8/18/2014

Vulnerability Publication Date: 8/18/2014

Reference Information

CVE: CVE-2014-5206, CVE-2014-5207

BID: 69214, 69216

USN: 2318-1