GLSA-200909-13 : irssi: Execution of arbitrary code

This script is Copyright (C) 2009-2014 Tenable Network Security, Inc.


Synopsis :

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

Description :

The remote host is affected by the vulnerability described in GLSA-200909-13
(irssi: Execution of arbitrary code)

Nemo discovered an off-by-one error leading to a heap overflow in
irssi's event_wallops() parsing function.

Impact :

A remote attacker might entice a user to connect to a malicious IRC
server, use a man-in-the-middle attack to redirect a user to such a
server or use ircop rights to send a specially crafted WALLOPS message,
which might result in the execution of arbitrary code with the
privileges of the user running irssi.

Workaround :

There is no known workaround at this time.

See also :

http://www.gentoo.org/security/en/glsa/glsa-200909-13.xml

Solution :

All irssi users should upgrade to the latest version:
# emerge --sync
# emerge --ask --oneshot --verbose '>=net-irc/irssi-0.8.13-r1'

Risk factor :

Medium / CVSS Base Score : 5.0
(CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:P)

Family: Gentoo Local Security Checks

Nessus Plugin ID: 40960 (gentoo_GLSA-200909-13.nasl)

Bugtraq ID:

CVE ID: CVE-2009-1959