Bugtraq mailing list archives
[ GLSA 200503-02 ] phpBB: Multiple vulnerabilities
From: Thierry Carrez <koon () gentoo org>
Date: Tue, 01 Mar 2005 19:26:59 +0100
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200503-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: Normal Title: phpBB: Multiple vulnerabilities Date: March 01, 2005 Bugs: #82955 ID: 200503-02 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== Several vulnerabilities allow remote attackers to gain phpBB administrator rights or expose and manipulate sensitive data. Background ========== phpBB is an Open Source bulletin board package. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 www-apps/phpBB < 2.0.13 >= 2.0.13 Description =========== It was discovered that phpBB contains a flaw in the session handling code and a path disclosure bug. AnthraX101 discovered that phpBB allows local users to read arbitrary files, if the "Enable remote avatars" and "Enable avatar uploading" options are set (CAN-2005-0259). He also found out that incorrect input validation in "usercp_avatar.php" and "usercp_register.php" makes phpBB vulnerable to directory traversal attacks, if the "Gallery avatars" setting is enabled (CAN-2005-0258). Impact ====== Remote attackers can exploit the session handling flaw to gain phpBB administrator rights. By providing a local and a remote location for an avatar and setting the "Upload Avatar from a URL:" field to point to the target file, a malicious local user can read arbitrary local files. By inserting "/../" sequences into the "avatarselect" parameter, a remote attacker can exploit the directory traversal vulnerability to delete arbitrary files. A flaw in the "viewtopic.php" script can be exploited to expose the full path of PHP scripts. Workaround ========== There is no known workaround at this time. Resolution ========== All phpBB users should upgrade to the latest available version: # emerge --sync # emerge --ask --oneshot --verbose ">=www-apps/phpBB-2.0.13" References ========== [ 1 ] CAN-2005-0258 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0258 [ 2 ] CAN-2005-0259 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0259 [ 3 ] phpBB announcement http://www.phpbb.com/phpBB/viewtopic.php?f=14&t=267563 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200503-02.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 2005 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/2.0
Attachment:
signature.asc
Description: OpenPGP digital signature
Current thread:
- [ GLSA 200503-02 ] phpBB: Multiple vulnerabilities Thierry Carrez (Mar 01)