Ubuntu 14.04 LTS : lxc regression (USN-2753-3)

Ubuntu Security Notice (C) 2015-2016 Canonical, Inc. / NASL script (C) 2015-2016 Tenable Network Security, Inc.


Synopsis :

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

Description :

USN-2753-1 fixed a vulnerability in LXC. The update caused a
regression that prevented some containers from starting. This
regression only affected containers that had a path that contained a
'/./' directory specified as a bind mount target in their
configuration file. This update fixes the problem. We apologize for
the inconvenience.

Roman Fiedler discovered a directory traversal flaw in lxc-start. A
local attacker with access to an LXC container could exploit this flaw
to run programs inside the container that are not confined by AppArmor
or expose unintended files in the host to the container.

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 :

High / CVSS Base Score : 7.2
(CVSS2#AV:L/AC:L/Au:N/C:C/I:C/A:C)
CVSS Temporal Score : 5.3
(CVSS2#E:U/RL:OF/RC:C)
Public Exploit Available : false

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 86292 ()

Bugtraq ID:

CVE ID:

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