Several security issues were fixed in Irssi.
It was discovered that Irssi incorrectly handled certain disconnections. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-7054)
4 July 2019
A security issue affects these releases of Ubuntu and its derivatives:
Several security issues were fixed in Irssi.
It was discovered that Irssi incorrectly handled certain disconnections. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 18.04 LTS. (CVE-2018-7054)
It was discovered that Irssi incorrectly handled certain requests. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. (CVE-2019-13045)
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.