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[ GLSA 200909-13 ] irssi: Execution of arbitrary code
From: Alex Legler <a3li () gentoo org>
Date: Sat, 12 Sep 2009 18:29:10 +0200
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200909-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: irssi: Execution of arbitrary code Date: September 12, 2009 Bugs: #271875 ID: 200909-13 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== 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. Background ========== irssi is a modular textUI IRC client with IPv6 support. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-irc/irssi < 0.8.13-r1 >= 0.8.13-r1 Description =========== 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. Resolution ========== All irssi users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose =net-irc/irssi-0.8.13-r1 References ========== [ 1 ] CVE-2009-1959 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-1959 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200909-13.xml Concerns? ========= Security is a primary focus of Gentoo Linux and ensuring the confidentiality and security of our users machines is of utmost importance to us. Any security concerns should be addressed to security () gentoo org or alternatively, you may file a bug at https://bugs.gentoo.org. License ======= Copyright 2009 Gentoo Foundation, Inc; referenced text belongs to its owner(s). The contents of this document are licensed under the Creative Commons - Attribution / Share Alike license. http://creativecommons.org/licenses/by-sa/2.5
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- [ GLSA 200909-13 ] irssi: Execution of arbitrary code Alex Legler (Sep 12)