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securityvulnsSecurityvulnsSECURITYVULNS:DOC:30462
HistoryApr 07, 2014 - 12:00 a.m.

[USN-2104-1] LXC vulnerability

2014-04-0700:00:00
vulners.com
15

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Ubuntu Security Notice USN-2104-1
February 12, 2014

lxc vulnerability

A security issue affects these releases of Ubuntu and its derivatives:

  • Ubuntu 13.10

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.

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:
http://www.ubuntu.com/usn/usn-2104-1
CVE-2013-6441

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

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