USN-3465-1: Irssi vulnerabilities
26 October 2017
Several security issues were fixed in Irssi.
Releases
Packages
- irssi - terminal based IRC client
Details
Brian Carpenter discovered that Irssi incorrectly handled messages with
invalid time stamps. A malicious IRC server could use this issue to cause
Irssi to crash, resulting in a denial of service. (CVE-2017-10965)
Brian Carpenter discovered that Irssi incorrectly handled the internal nick
list. A malicious IRC server could use this issue to cause Irssi to crash,
resulting in a denial of service. (CVE-2017-10966)
Joseph Bisch discovered that Irssi incorrectly removed destroyed channels
from the query list. A malicious IRC server could use this issue to cause
Irssi to crash, resulting in a denial of service. (CVE-2017-15227)
Hanno Böck discovered that Irssi incorrectly handled themes. If a user were
tricked into using a malicious theme, a attacker could use this issue to
cause Irssi to crash, resulting in a denial of service. (CVE-2017-15228)
Joseph Bisch discovered that Irssi incorrectly handled certain DCC CTCP
messages. A malicious IRC server could use this issue to cause Irssi to
crash, resulting in a denial of service. (CVE-2017-15721)
Joseph Bisch discovered that Irssi incorrectly handled certain channel IDs.
A malicious IRC server could use this issue to cause Irssi to crash,
resulting in a denial of service. (CVE-2017-15722)
Joseph Bisch discovered that Irssi incorrectly handled certain long nicks
or targets. A malicious IRC server could use this issue to cause Irssi to
crash, resulting in a denial of service. (CVE-2017-15723)
Update instructions
The problem can be corrected by updating your system to the following package versions:
Ubuntu 17.10
Ubuntu 17.04
Ubuntu 16.04
Ubuntu 14.04
After a standard system update you need to restart Irssi to make all the
necessary changes.