GLSA 200909-13: irssi: Execution of arbitrary code
Severity: | high |
Title: | irssi: Execution of arbitrary code |
Date: | 09/12/2009 |
Bugs: |
|
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 | Architecture(s) |
---|---|---|---|
net-irc/irssi | < 0.8.13-r1 | >= 0.8.13-r1 | All supported architectures |
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
Availability
This GLSA and any updates to it are available for viewing at the Gentoo Security Website:
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 2010 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.