Multiple Mozilla products contain a flaw that may lead to an unauthorized information disclosure. The issue is triggered when an error occurs in the mImageBufferSize() method during the encoding of an image as image/vnd.microsoft.icon. This will cause an image to be initialized with a different value than that of the source image, which may allow an attacker to gain access to potentially sensitive information when converting an image from ICO format to PNG.

Upgrade Firefox and Thunderbird to version 10.0 or higher, and SeaMonkey to version 2.7 or higher, as they have been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

• Security Tracker: 1026605 1026606 1026607
• ISS X-Force ID: 1026605 72856
• CVE ID: 2012-0447 (see also: NVD)
• SCIP VulDB ID: 4593
• Secunia Advisory ID: 47751 47816 47840 47902 47980 48075 49055 52614 52615
• Bugtraq ID: 51757
• Related OSVDB ID: 78733 78734 78735 78736 78737 78739 78740 78741
• Mail List Post: http://lists.opensuse.org/opensuse-security-announce/2012-02/msg00011.html
• Vendor Specific News/Changelog Entry: http://lists.opensuse.org/opensuse-updates/2012-02/msg00026.html
  http://lists.opensuse.org/opensuse-updates/2012-04/msg00066.html
  http://www.palemoon.org/releasenotes-ng.shtml
  http://www.ubuntu.com/usn/usn-1355-1/
  http://www.ubuntu.com/usn/usn-1355-2/
  http://www.ubuntu.com/usn/usn-1355-3/
  http://www.ubuntu.com/usn/usn-1369-1/
  https://bugzilla.mozilla.org/show_bug.cgi?id=710079 [ Auth Req'd ]
• Other Advisory URL: http://www.mandriva.com/security/advisories?name=MDVSA-2012:013
• Vendor Specific Advisory URL: http://www.mozilla.org/security/announce/2012/mfsa2012-06.html
  https://blogs.oracle.com/sunsecurity/entry/multiple_vulnerabilities_in_thunderbird6

• Tim Abraldes