USN-4119-1: Irssi vulnerability

3 September 2019

irssi vulnerability

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

  • Ubuntu 19.04


Irssi could be made to crash or execute arbitrary code if it received a specially crafted CAP request.

Software Description

  • irssi - terminal based IRC client


It was discovered that Irssi incorrectly handled certain CAP requests. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code.

Update instructions

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

Ubuntu 19.04
irssi - 1.2.0-2ubuntu1.2

To update your system, please follow these instructions:

After a standard system update you need to restart Irssi to make all the necessary changes.