Ubuntu 14.04 LTS : LXC regression (USN-2753-2)

high Nessus Plugin ID 86218

Synopsis

The remote Ubuntu host is missing a security update.

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 an absolute path 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.

See Also

https://ubuntu.com/security/notices/USN-2753-2

Plugin Details

Severity: High

ID: 86218

File Name: ubuntu_USN-2753-2.nasl

Version: 2.7

Type: local

Agent: unix

Published: 10/1/2015

Updated: 10/23/2023

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Nessus

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:lxc, p-cpe:/a:canonical:ubuntu_linux:lxc-dev, p-cpe:/a:canonical:ubuntu_linux:lxc-templates, p-cpe:/a:canonical:ubuntu_linux:lxc-tests, p-cpe:/a:canonical:ubuntu_linux:python3-lxc, cpe:/o:canonical:ubuntu_linux:14.04:-:lts, p-cpe:/a:canonical:ubuntu_linux:liblxc1

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

Exploit Ease: No known exploits are available

Patch Publication Date: 9/30/2015

Vulnerability Publication Date: 9/30/2015

Reference Information

USN: 2753-2