Ubuntu 14.04 LTS / 14.10 / 15.04 : lxc vulnerabilities (USN-2675-1)

Medium Nessus Plugin ID 84957


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


Roman Fiedler discovered that LXC had a directory traversal flaw when creating lock files. A local attacker could exploit this flaw to create an arbitrary file as the root user. (CVE-2015-1331)

Roman Fiedler discovered that LXC incorrectly trusted the container's proc filesystem to set up AppArmor profile changes and SELinux domain transitions. A local attacker could exploit this flaw to run programs inside the container that are not confined by AppArmor or SELinux.

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.


Update the affected liblxc1 and / or lxc packages.

Plugin Details

Severity: Medium

ID: 84957

File Name: ubuntu_USN-2675-1.nasl

Version: $Revision: 2.4 $

Type: local

Agent: unix

Published: 2015/07/23

Modified: 2016/05/24

Dependencies: 12634

Risk Information

Risk Factor: Medium


Base Score: 4.9

Temporal Score: 3.6

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:liblxc1, p-cpe:/a:canonical:ubuntu_linux:lxc, cpe:/o:canonical:ubuntu_linux:14.04, cpe:/o:canonical:ubuntu_linux:14.10, cpe:/o:canonical:ubuntu_linux:15.04

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

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2015/07/22

Reference Information

CVE: CVE-2015-1331, CVE-2015-1334

OSVDB: 125137, 125138

USN: 2675-1