1. Ubuntu Security Notices
  2. USN-929-1

USN-929-1: irssi vulnerabilities

Publication date

15 April 2010

Overview

irssi vulnerabilities

Releases

Packages

Details

It was discovered that irssi did not perform certificate host validation
when using SSL connections. An attacker could exploit this to perform a man
in the middle attack to view sensitive information or alter encrypted
communications. (CVE-2010-1155)

Aurelien Delaitre discovered that irssi could be made to dereference a NULL
pointer when a user left the channel. A remote attacker could cause a
denial of service via application crash. (CVE-2010-1156)

This update also adds SSLv3 and TLSv1 support, while disabling the old,
insecure SSLv2 protocol.

It was discovered that irssi did not perform certificate host validation
when using SSL connections. An attacker could exploit this to perform a man
in the middle attack to view sensitive information or alter encrypted
communications. (CVE-2010-1155)

Aurelien Delaitre discovered that irssi could be made to dereference a NULL
pointer when a user left the channel. A remote attacker could cause a
denial of service via application crash. (CVE-2010-1156)

This update also adds SSLv3 and TLSv1 support, while disabling the old,
insecure SSLv2 protocol.

Update instructions

After a standard system upgrade you need to restart irssi to effect the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
9.10 karmic irssi –  0.8.14-1ubuntu1.1
9.04 jaunty irssi –  0.8.12-6ubuntu1.2
8.10 intrepid irssi –  0.8.12-4ubuntu2.2
8.04 hardy irssi –  0.8.12-3ubuntu3.2

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References

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