Summary
The remote host is missing an update to irssi
announced via advisory USN-800-1.
Solution
The problem can be corrected by upgrading your system to the following package versions:
Ubuntu 6.06 LTS:
irssi 0.8.10-1ubuntu1.1
Ubuntu 8.04 LTS:
irssi 0.8.12-3ubuntu3.1
Ubuntu 8.10:
irssi 0.8.12-4ubuntu2.1
Ubuntu 9.04:
irssi 0.8.12-6ubuntu1.1
After a standard system upgrade you need to restart irssi to effect the necessary changes.
https://secure1.securityspace.com/smysecure/catid.html?in=USN-800-1
Insight
It was discovered that irssi did not properly check the length of strings when processing WALLOPS messages. If a user connected to an IRC network where an attacker had IRC operator privileges, a remote attacker could cause a denial of service.
Severity
Classification
-
CVE CVE-2009-1959 -
CVSS Base Score: 5.0
AV:N/AC:L/Au:N/C:N/I:N/A:P
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