USN-3465-1: Irssi vulnerabilities

Ubuntu Security Notice USN-3465-1

26th October, 2017

irssi vulnerabilities

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

• Ubuntu 17.10
• Ubuntu 17.04
• Ubuntu 16.04 LTS
• Ubuntu 14.04 LTS

Summary

Several security issues were fixed in Irssi.

Software description

• 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 version:

Ubuntu 17.10:

irssi 1.0.4-1ubuntu2.1

Ubuntu 17.04:

irssi 0.8.20-2ubuntu2.2

Ubuntu 16.04 LTS:

irssi 0.8.19-1ubuntu1.5

Ubuntu 14.04 LTS:

irssi 0.8.15-5ubuntu3.3

To update your system, please follow these instructions: http://ift.tt/17VXqjU.

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

References

CVE-2017-10965, CVE-2017-10966, CVE-2017-15227, CVE-2017-15228, CVE-2017-15721, CVE-2017-15722, CVE-2017-15723

from Ubuntu Security Notices http://ift.tt/2gLqg3O