USN-3317-1: Irssi vulnerabilities

12 June 2017

irssi vulnerabilities

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

  • Ubuntu 17.04
  • Ubuntu 16.10
  • Ubuntu 16.04 LTS
  • Ubuntu 14.04 LTS

Summary

Irssi could be made to crash if it received specially crafted network traffic.

Software Description

  • irssi - terminal based IRC client

Details

It was discovered that Irssi incorrectly handled certain DCC messages. A malicious IRC server could use this issue to cause Irssi to crash, resulting in a denial of service. (CVE-2017-9468)

Joseph Bisch discovered that Irssi incorrectly handled receiving incorrectly quoted DCC files. A remote attacker could possibly use this issue to cause Irssi to crash, resulting in a denial of service. (CVE-2017-9469)

Update instructions

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

Ubuntu 17.04
irssi - 0.8.20-2ubuntu2.1
Ubuntu 16.10
irssi - 0.8.19-1ubuntu2.2
Ubuntu 16.04 LTS
irssi - 0.8.19-1ubuntu1.4
Ubuntu 14.04 LTS
irssi - 0.8.15-5ubuntu3.2

To update your system, please follow these instructions: https://wiki.ubuntu.com/Security/Upgrades.

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

References