Several security issues were fixed in Irssi.
It was discovered that Irssi incorrectly handled certain empty nick names. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7050)
6 March 2018
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 empty nick names. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7050)
It was discovered that Irssi incorrectly handled certain nick names. An attacker could possibly use this to access sensitive information. (CVE-2018-7051)
It was discovered that Irssi incorrectly handled an increase in the number of windows. An attacker could possibly use this issue to cause a denial of service. (CVE-2018-7052)
It was discovered that Irssi incorrectly handled certain messages. An attacker could possibly use this issue to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 16.04 LTS and Ubuntu 17.10. (CVE-2018-7053)
It was discovered that Irssi incorrectly handled certain disconnections. An attacker could possibly use this to cause a denial of service or execute arbitrary code. This issue only affected Ubuntu 17.10. (CVE-2018-7054)
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