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USN-929-1: irssi vulnerabilities

15 April 2010

irssi vulnerabilities

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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.

Reduce your security exposure

Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 9.10
Ubuntu 9.04
Ubuntu 8.10
Ubuntu 8.04

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