Joined: 12 May 2004
|Posted: Sat Sep 12, 2009 6:26 pm Post subject: [ GLSA 200909-13 ] irssi: Execution of arbitrary code
|Gentoo Linux Security Advisory
Title: irssi: Execution of arbitrary code (GLSA 200909-13)
Date: September 12, 2009
A remotely exploitable off-by-one error leading to a heap overflow was
found in irssi which might result in the execution of arbitrary code.
irssi is a modular textUI IRC client with IPv6 support.
Vulnerable: < 0.8.13-r1
Unaffected: >= 0.8.13-r1
Architectures: All supported architectures
Nemo discovered an off-by-one error leading to a heap overflow in
irssi's event_wallops() parsing function.
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.
There is no known workaround at this time.
All irssi users should upgrade to the latest version:
|# emerge --sync
# emerge --ask --oneshot --verbose ">=net-irc/irssi-0.8.13-r1"
Last edited by GLSA on Sun Nov 22, 2009 4:29 am; edited 1 time in total