From klieber@gentoo.org Thu Jul 22 18:53:21 2004 From: Kurt Lieber To: gentoo-announce@lists.gentoo.org Cc: bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, security-alerts@linuxsecurity.com Date: Thu, 22 Jul 2004 12:10:16 +0000 Subject: [ GLSA 200407-17 ] l2tpd: Buffer overflow - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200407-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: l2tpd: Buffer overflow Date: July 22, 2004 Bugs: #53009 ID: 200407-17 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== A buffer overflow in l2tpd could lead to remote code execution. It is not known whether this bug is exploitable. Background ========== l2tpd is a GPL implentation of the Layer 2 Tunneling Protocol. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-dialup/l2tpd < 0.69-r2 >= 0.69-r2 Description =========== Thomas Walpuski discovered a buffer overflow that may be exploitable by sending a specially crafted packet. In order to exploit the vulnerable code, an attacker would need to fake the establishment of an L2TP tunnel. Impact ====== A remote attacker may be able to execute arbitrary code with the privileges of the user running l2tpd. Workaround ========== There is no known workaround for this vulnerability. Resolution ========== All users are recommended to upgrade to the latest stable version: # emerge sync # emerge -pv ">=net-l2tpd-0.69-r2" # emerge ">=net-l2tpd-0.69-r2" References ========== [ 1 ] CAN-2004-0649 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0649 [ 2 ] Full Disclosure Report http://seclists.org/lists/fulldisclosure/2004/Jun/0094.html Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200407-17.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 http://bugs.gentoo.org. License ======= Copyright 2004 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/1.0 [ Part 2, Application/PGP-SIGNATURE 196bytes. ] [ Unable to print this part. ]