Ubuntu 12.04 LTS : linux-lts-trusty vulnerabilities (USN-2317-1)

Ubuntu Security Notice (C) 2014-2016 Canonical, Inc. / NASL script (C) 2014-2016 Tenable Network Security, Inc.

Synopsis :

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

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

Risk factor :

High / CVSS Base Score : 7.2
CVSS Temporal Score : 6.3
Public Exploit Available : true

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 77236 ()

Bugtraq ID: 69214

CVE ID: CVE-2014-5206

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