Debian Security Advisory DSA 3317-1 (lxc - security update)

Published: 2015-07-24 22:00:00
CVE Author: NIST National Vulnerability Database

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

Solution Type:
Vendor Patch

Detection Type:
Linux Distribution Package

Affected Versions:
lxc on Debian Linux

Recommendations:
For the stable distribution (jessie), these problems have been fixed in version 1:1.0.6-6+deb8u1. For the testing distribution (stretch), these problems have been fixed in version 1:1.0.7-4. For the unstable distribution (sid), these problems have been fixed in version 1:1.0.7-4. We recommend that you upgrade your lxc Linux Distribution Packages.

Summary:
Several vulnerabilities have been discovered in LXC, the Linux Containers userspace tools. The Common Vulnerabilities and Exposures project identifies the following problems: CVE-2015-1331 Roman Fiedler discovered a directory traversal flaw in LXC when creating lock files. A local attacker could exploit this flaw to create an arbitrary file as the root user. CVE-2015-1334 Roman Fiedler discovered that LXC incorrectly trusted the container's proc filesystem to set up AppArmor profile changes and SELinux domain transitions. A malicious container could create a fake proc filesystem and use this flaw to run programs inside the container that are not confined by AppArmor or SELinux.

Detection Method:
This check tests the installed software version using the apt Linux Distribution Package manager.

NIST (National Institute of Standards and Technology) NVD (National Vulnerability Database)

https://nvd.nist.gov/vuln/detail/CVE-2015-1331
https://nvd.nist.gov/vuln/detail/CVE-2015-1334

References:

http://www.debian.org/security/2015/dsa-3317.html

Severity
Medium
CVSS Score
4.9
Published
2015-07-24
Modified
2019-03-18
Category
Debian Local Security Checks

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