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Gentoo alert 200501-39 (squirrelmail)

From:  Sune Kloppenborg Jeppesen <jaervosz@gentoo.org>
To:  gentoo-announce@lists.gentoo.org
Subject:  [gentoo-announce] [ GLSA 200501-39 ] SquirrelMail: Multiple vulnerabilities
Date:  Fri, 28 Jan 2005 15:46:32 +0100
Cc:  bugtraq@securityfocus.com, full-disclosure@lists.netsys.com, security-alerts@linuxsecurity.com

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Gentoo Linux Security Advisory GLSA 200501-39 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - http://security.gentoo.org/ - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Severity: High Title: SquirrelMail: Multiple vulnerabilities Date: January 28, 2005 Bugs: #78116 ID: 200501-39 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Synopsis ======== SquirrelMail fails to properly sanitize user input, which could lead to arbitrary code execution and compromise webmail accounts. Background ========== SquirrelMail is a webmail package written in PHP. It supports IMAP and SMTP and can optionally be installed with SQL support. Affected packages ================= ------------------------------------------------------------------- Package / Vulnerable / Unaffected ------------------------------------------------------------------- 1 mail-client/squirrelmail <= 1.4.3a-r2 >= 1.4.4 Description =========== SquirrelMail fails to properly sanitize certain strings when decoding specially-crafted strings, which can lead to PHP file inclusion and XSS. * Insufficient checking of incoming URLs in prefs.php (CAN-2005-0075) and in webmail.php (CAN-2005-0103). * Insufficient escaping of integers in webmail.php (CAN-2005-0104). Impact ====== By sending a specially-crafted URL, an attacker can execute arbitrary code from the local system with the permissions of the web server. Furthermore by enticing a user to load a specially-crafted URL, it is possible to display arbitrary remote web pages in Squirrelmail's frameset and execute arbitrary scripts running in the context of the victim's browser. This could lead to a compromise of the user's webmail account, cookie theft, etc. Workaround ========== The arbitrary code execution is only possible with "register_globals" set to "On". Gentoo ships PHP with "register_globals" set to "Off" by default. There are no known workarounds for the other issues at this time. Resolution ========== All SquirrelMail users should upgrade to the latest version: # emerge --sync # emerge --ask --oneshot --verbose ">=mail-client/squirrelmail-1.4.4" Note: Users with the vhosts USE flag set should manually use webapp-config to finalize the update. References ========== [ 1 ] SquirrelMail Advisory http://sourceforge.net/mailarchive/message.php?msg_id=106... [ 2 ] CAN-2005-0075 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0075 [ 3 ] CAN-2005-0103 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0103 [ 4 ] CAN-2005-0104 http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0104 Availability ============ This GLSA and any updates to it are available for viewing at the Gentoo Security Website: http://security.gentoo.org/glsa/glsa-200501-39.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


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