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http://www.squirrelmail.org/security/issue/2007-05-09 reports Description: There's an ongoing battle to further secure the HTML filter against malicious HTML mail and the browsers that accept almost any malformed piece of HTML. This release contains fixes for the following: - HTML attachments containing "data:" URLs; - Internet Explorer in various versions accepts many permutations of HTML and JavaScript in many charsets. We now properly canonicalize the incoming HTML to us-ascii before applying further filters. IE only. - Request forgery through images. It was possible to include "images" in HTML mails which were in fact GET requests for the compose.php page sending mail. These images are now properly detected, and the compose form will only send mail through a POST request. Affected Versions: 1.4.0-1.4.9a Register Globals: Register_globals does not have to be on for this issue. CVE id('s): CVE-2007-1262 Patch: http://www.squirrelmail.org/patches/1.4.10-security/
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2007-0358.html