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

Information

Severity

Severity

Medium

Family

Family

Debian Local Security Checks

CVSSv2 Base

CVSSv2 Base

4.9

CVSSv2 Vector

CVSSv2 Vector

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

Solution Type

Solution Type

Vendor Patch

Created

Created

8 years ago

Modified

Modified

2 years ago

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.

Affected Software

Affected Software

lxc on Debian Linux

Detection Method

Detection Method

This check tests the installed software version using the apt package manager.

Solution

Solution

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 packages.

Common Vulnerabilities and Exposures (CVE)