USN-3527-1: Irssi vulnerabilities
Ubuntu Security Notice USN-3527-1
10th January, 2018
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
Joseph Bisch discovered that Irssi incorrectly handled incomplete escape
codes. If a user were tricked into using malformed commands or opening
malformed files, an attacker could use this issue to cause Irssi to crash,
resulting in a denial of service. (CVE-2018-5205)
Joseph Bisch discovered that Irssi incorrectly handled settings the channel
topic without specifying a sender. A malicious IRC server could use this
issue to cause Irssi to crash, resulting in a denial of service.
(CVE-2018-5206)
Joseph Bisch discovered that Irssi incorrectly handled incomplete variable
arguments. If a user were tricked into using malformed commands or opening
malformed files, an attacker could use this issue to cause Irssi to crash,
resulting in a denial of service. (CVE-2018-5207)
Joseph Bisch discovered that Irssi incorrectly handled completing certain
strings. An attacker could use this issue to cause Irssi to crash,
resulting in a denial of service, or possibly execute arbitrary code.
(CVE-2018-5208)
Update instructions
The problem can be corrected by updating your system to the following
package version:
- Ubuntu 17.10:
-
irssi
1.0.4-1ubuntu2.2
- Ubuntu 17.04:
-
irssi
0.8.20-2ubuntu2.3
- Ubuntu 16.04 LTS:
-
irssi
0.8.19-1ubuntu1.6
- Ubuntu 14.04 LTS:
-
irssi
0.8.15-5ubuntu3.4
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.
References
Source: USN-3527-1: Irssi vulnerabilities
