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[ GLSA 200405-09 ] ProFTPD Access Control List bypass vulnerability
From: Kurt Lieber <klieber () gentoo org>
Date: Wed, 19 May 2004 08:03:40 -0400
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200405-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: ProFTPD Access Control List bypass vulnerability Date: May 19, 2004 Bugs: #49496 ID: 200405-09 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Version 1.2.9 of ProFTPD introduced a vulnerability that causes CIDR-based Access Control Lists (ACLs) to be treated as "AllowAll", thereby allowing remote users full access to files available to the FTP daemon. Background ========== ProFTPD is an FTP daemon. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 net-ftp/proftpd == 1.2.9-r1 >= 1.2.9-r2 1 net-ftp/proftpd == 1.2.9 >= 1.2.9-r2 Description =========== ProFTPD 1.2.9 introduced a vulnerability that allows CIDR-based ACLs (such as 10.0.0.1/24) to be bypassed. The CIDR ACLs are disregarded, with the net effect being similar to an "AllowAll" directive. Impact ====== This vulnerability may allow unauthorized files, including critical system files to be downloaded and/or modified, thereby allowing a potential remote compromise of the server. Workaround ========== Users may work around the problem by avoiding use of CIDR-based ACLs. Resolution ========== ProFTPD users are encouraged to upgrade to the latest version of the package: # emerge sync # emerge -pv ">=net-ftp/proftpd-1.2.9-r2" # emerge ">=net-ftp/proftpd-1.2.9-r2" References ========== [ 1 ] CAN-2004-0432 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0432 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200405-09.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 Technologies, 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
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- [ GLSA 200405-09 ] ProFTPD Access Control List bypass vulnerability Kurt Lieber (May 19)