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AUSCERT External Security Bulletin Redistribution
ESB-2017.2720
Irssi vulnerabilities
27 October 2017
===========================================================================
AusCERT Security Bulletin Summary
---------------------------------
Product: irssi
Publisher: Ubuntu
Operating System: Ubuntu
Impact/Access: Denial of Service -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-15723 CVE-2017-15722 CVE-2017-15721
CVE-2017-15228 CVE-2017-15227 CVE-2017-10966
CVE-2017-10965
Reference: ESB-2017.2668
Original Bulletin:
http://www.ubuntu.com/usn/usn-3465-1
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Ubuntu Security Notice USN-3465-1
October 26, 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 versions:
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
After a standard system update you need to restart Irssi to make all the
necessary changes.
References:
https://www.ubuntu.com/usn/usn-3465-1
CVE-2017-10965, CVE-2017-10966, CVE-2017-15227, CVE-2017-15228,
CVE-2017-15721, CVE-2017-15722, CVE-2017-15723
Package Information:
https://launchpad.net/ubuntu/+source/irssi/1.0.4-1ubuntu2.1
https://launchpad.net/ubuntu/+source/irssi/0.8.20-2ubuntu2.2
https://launchpad.net/ubuntu/+source/irssi/0.8.19-1ubuntu1.5
https://launchpad.net/ubuntu/+source/irssi/0.8.15-5ubuntu3.3
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