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Alerts This Week
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Ubuntu 13.10 USN-2104-1 Critical LXC Privilege Escalation

ubuntu
Calendar Grey February 12, 2014
Scroller Ubuntu
LXC may enable unauthorized manipulation of the host in Ubuntu 13.10. Ensure your system is updated to mitigate risks of privilege escalation.
LXC would allow unintended access to the host, bypassing intended confinement.

Summary

LXC would allow unintended access to the host, bypassing intended

confinement.

Software Description:

- lxc: Linux Containers userspace tools

Details:

Florian Sagar discovered that the LXC sshd template set incorrect mount

permissions. An attacker could possibly use this flaw to cause privilege

escalation on the host.

Topics%20covered

Topics Covered

security advisory privilege escalation access control ubuntu lxc

Update Instructions

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

Ubuntu 13.10:
  lxc-templates                   1.0.0~alpha1-0ubuntu14.1

After a standard system update you need to recreate LXC containers created
with the sshd template to make all the necessary changes.

References

https://ubuntu.com/security/notices/USN-2104-1

CVE-2013-6441

Severity
critical
Lowest
Low
Medium
High
Critical

February 12, 2014

Topics%20covered

Topics Covered

security advisory privilege escalation access control ubuntu lxc

Package Information

https://launchpad.net/ubuntu/+source/lxc/1.0.0~alpha1-0ubuntu14.1

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