=========================================================================Ubuntu Security Notice USN-2558-1
April 07, 2015

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

- Ubuntu 14.10
- Ubuntu 14.04 LTS
- Ubuntu 12.04 LTS

Summary:

Mailman could be made to run programs if it processed a specially crafted
list name.

Software Description:
- mailman: Powerful, web-based mailing list manager

Details:

It was discovered that Mailman incorrectly handled special characters
in list names. A local attacker could use this issue to perform a path
traversal attack and execute arbitrary code as the Mailman user.

Update instructions:

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

Ubuntu 14.10:
  mailman                         1:2.1.18-1ubuntu0.1

Ubuntu 14.04 LTS:
  mailman                         1:2.1.16-2ubuntu0.1

Ubuntu 12.04 LTS:
  mailman                         1:2.1.14-3ubuntu0.2

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

References:
  https://ubuntu.com/security/notices/USN-2558-1
  CVE-2015-2775

Package Information:
  https://launchpad.net/ubuntu/+source/mailman/1:2.1.18-1ubuntu0.1
  https://launchpad.net/ubuntu/+source/mailman/1:2.1.16-2ubuntu0.1
  https://launchpad.net/ubuntu/+source/mailman/1:2.1.14-3ubuntu0.2