GLSA-200909-13 : irssi: Execution of arbitrary code
Medium Nessus Plugin ID 40960
SynopsisThe remote Gentoo host is missing one or more security-related patches.
DescriptionThe 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.
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.
SolutionAll irssi users should upgrade to the latest version:
# emerge --sync # emerge --ask --oneshot --verbose '>=net-irc/irssi-0.8.13-r1'