Ubuntu 8.04 LTS / 8.10 / 9.04 / 9.10 : irssi regression (USN-929-2)

Ubuntu Security Notice (C) 2010-2013 Canonical, Inc. / NASL script (C) 2010-2013 Tenable Network Security, Inc.


Synopsis :

The remote Ubuntu host is missing one or more security-related patches.

Description :

USN-929-1 fixed vulnerabilities in irssi. The upstream changes
introduced a regression when using irssi with SSL and an IRC proxy.
This update fixes the problem.

We apologize for the inconvenience.

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.

Solution :

Update the affected irssi and / or irssi-dev packages.

Risk factor :

Medium / CVSS Base Score : 6.8
(CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P)

Family: Ubuntu Local Security Checks

Nessus Plugin ID: 45589 ()

Bugtraq ID:

CVE ID: CVE-2010-1155
CVE-2010-1156