USN-2945-1: XChat-GNOME vulnerability

4 April 2016

xchat-gnome vulnerability

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

  • Ubuntu 15.10
  • Ubuntu 14.04 LTS
  • Ubuntu 12.04 LTS


XChat-GNOME could be made to expose sensitive information over the network.

Software Description

  • xchat-gnome - simple and featureful IRC client for GNOME


It was discovered that XChat-GNOME incorrectly verified the hostname in an SSL certificate. An attacker could trick XChat-GNOME into trusting a rogue server’s certificate, which was signed by a trusted certificate authority, to perform a man-in-the-middle attack.

Update instructions

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

Ubuntu 15.10
xchat-gnome - 1:0.30.0~git20141005.816798-0ubuntu6.2
Ubuntu 14.04 LTS
xchat-gnome - 1:0.30.0~git20131003.d20b8d+really20110821-0.2ubuntu12.2
Ubuntu 12.04 LTS
xchat-gnome - 1:0.30.0~git20110821.e2a400-0.2ubuntu4.3

To update your system, please follow these instructions:

After a standard system update you need to restart XChat-GNOME to make all the necessary changes.