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Ubuntu: USN-2753-1 Critical: LXC AppArmor Bypass Security Advisory

ubuntu
Calendar Grey September 29, 2015
Scroller Ubuntu
=========================================================================Ubuntu Security Notice USN-
LXC could be made to start containers without AppArmor confinement or accessthe host filesystem.

Summary

LXC could be made to start containers without AppArmor confinement or access

the host filesystem.

Software Description:

- lxc: Linux Containers userspace tools

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 directory traversal local exploit ubuntu apparmor container access lxc

Update Instructions

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

Ubuntu 15.04:
  lxc                             1.1.2-0ubuntu3.2

Ubuntu 14.04 LTS:
  lxc                             1.0.7-0ubuntu0.5

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

References

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

CVE-2015-1335

Severity
critical
Lowest
Low
Medium
High
Critical

September 29, 2015

Topics%20covered

Topics Covered

security advisory directory traversal local exploit ubuntu apparmor container access lxc

Package Information

https://launchpad.net/ubuntu/+source/lxc/1.1.2-0ubuntu3.2
https://launchpad.net/ubuntu/+source/lxc/1.0.7-0ubuntu0.5

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