Irssi could be made to crash if it received specially crafted network traffic.
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)
12 June 2017
A security issue affects these releases of Ubuntu and its derivatives:
Irssi could be made to crash if it received specially crafted network traffic.
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)
The problem can be corrected by updating your system to the following package versions:
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.
Vulmon