__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN GIF Heap Overflow Parsing Netscape Extension 2 [Mozilla Foundation Security Advisory 2005-30] March 23, 2005 20:00 GMT Number P-160 [REVISED 24 Mar 2005] [REVISED 20 Apr 2005] ______________________________________________________________________________ PROBLEM: A GIF processing error when parsing the obsolete Netscape extension 2 files can lead to an exploitable heap overrun. PLATFORM: Firefox Thunderbird Mozilla Suite Red Hat Desktop (v. 4) Red Hat Enterprise Linux AS, ES, WS (v. 4) HP-UX B.11.00, B.11.11, B.11.22, B.11.23 DAMAGE: An attacker can run arbitrary code with the privileges of the user viewing the image. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is MEDIUM. A user would have to visit a malicious web ASSESSMENT: page or be coerced to click on a malicious link. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/p-160.shtml ORIGINAL BULLETIN: Mozilla Foundation Security Advisory 2005-30 http://www.mozilla.org/security/announce/mfsa2005-30.html ADDITIONAL LINKS: ISS X-Force http://xforce.iss.net/xforce/alerts/id/191 Red Hat RHSA-2005:336-03 https://rhn.redhat.com/errata/RHSA-2005-336.html Red Hat RHSA-2005:337-02 https://rhn.redhat.com/errata/RHSA-2005-337.html Visit Hewlett Packard Subscription Service for: HPSBUX01133 / SSRT 5940 CVE/CAN: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CAN-2005-0399 ______________________________________________________________________________ REVISION HISTORY: 03/24/2005 - revised to add a link to Red Hat Security Advisory RHSA-2005:336-03 and RHSA-2005:337-02 for Red Hat Desktop and Red Hat Enterprise Linux AS, ES, WS (v. 4). 04/20/2005 - added a reference to HP Security Bulletin HPSBUX01133 SSRT5940 that provides patches for HP-UX B.11.00, B.11.11, B.11.22, B.11.23. [***** Start Mozilla Foundation Security Advisory 2005-30 *****] Mozilla Foundation Security Advisory 2005-30 Title: GIF heap overflow parsing Netscape extension 2 Severity: Critical Risk: High Reporter: Mark Dowd (ISS X-Force) Products: Firefox, Thunderbird, Mozilla Suite Fixed in: Firefox 1.0.2 Thunderbird 1.0.2 Mozilla Suite 1.7.6 Description An GIF processing error when parsing the obsolete Netscape extension 2 can lead to an exploitable heap overrun, allowing an attacker to run arbitrary code on the user's machine. Workaround Turn off image display. Upgrade to the fixed version. References https://bugzilla.mozilla.org/show_bug.cgi?id=285595 http://xforce.iss.net/xforce/alerts/id/191 CAN-2005-0399 -------------------------------------------------------------------------------- [***** End Mozilla Foundation Security Advisory 2005-30 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of Mozilla for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. 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