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Ubuntu 14.04 LTS USN-2753-2: LXC Regression Fix Details

ubuntu
Calendar Grey September 30, 2015
Scroller Ubuntu
To address the LXC regression in Ubuntu 14.04 following USN-2753-1, follow these key steps for effective resolution and system restoration
USN-2753-1 introduced a regression in LXC.

Summary

USN-2753-1 introduced a regression in LXC.

Software Description:

- lxc: Linux Containers userspace tools

Details:

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.

Original advisory details:

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.

Topics%20covered

Topics Covered

security advisory update fix ubuntu regression lxc container

Update Instructions

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 14.04 LTS:
  lxc                             1.0.7-0ubuntu0.6

In general, a standard system update will make all the necessary changes.

References

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

https://ubuntu.com/security/notices/USN-2753-1

https://bugs.launchpad.net/ubuntu/+source/lxc/+bug/1501310

Severity
important
Lowest
Low
Medium
High
Critical

September 30, 2015

Topics%20covered

Topics Covered

security advisory update fix ubuntu regression lxc container

Package Information

https://launchpad.net/ubuntu/+source/lxc/1.0.7-0ubuntu0.6

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