__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN RealNetworks products are vulnerable to buffer overflow [US-CERT Vulnerability Note VU#231028] April 5, 2006 20:00 GMT Number Q-166 ______________________________________________________________________________ PROBLEM: Numerous RealNetworks products fail to properly validate SWF files allowing a buffer overflow to occur. PLATFORM: RealPlayer 10.5 (6.0.12.1040-1348) RealPlayer 10 RealOne Player v2 RealOne Player v1 RealPlayer 8 RealPlayer Enterprise (#2 and #4) Rhapsody 3 (build 0.815 – 1.0.269) (#2) Mac RealPlayer 10 (10.0.0.305 - 331) (#2 and #3) Mac RealOne Player (#2 and #3) Linux RealPlayer 10 (10.0.6) (#2) Helix Player (10.0.6) (#2) Linux RealPlayer 10 (10.0.0 - 5) (#2 and #3) Helix Player (10.0.0 - 5) (#2 and #3) DAMAGE: By persuading a user to access a specially crafted SWF file with RealPlayer, a remote attacker may be able to execute arbitrary code. SOLUTION: Apply updated patches. ______________________________________________________________________________ VULNERABILITY The risk is LOW - By persuading a user to access a specially ASSESSMENT: crafted SWF file with RealPlayer, a remote attacker may be able to execute arbitrary code. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/q-166.shtml ORIGINAL BULLETIN: http://service.real.com/realplayer/security/03162006_ player/en/ ADDITIONAL LINKS: US-Cert http://www.kb.cert.org/vuls/id/451556 US-Cert http://www.kb.cert.org/vuls/id/172489 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2006-0323 ______________________________________________________________________________ [***** Start US-CERT Vulnerability Note VU#231028 *****] Vulnerability Note VU#231028 Numerous RealNetworks products are vulnerable to buffer overflow via a specially crafted flash media file Overview Numerous RealNetworks products are vulnerable to a buffer overflow that may allow a remote attacker to execute arbitrary code on a vulnerable system. I. Description RealNetworks RealPlayer RealNetworks RealPlayer is a multimedia application that allows users to view local and remote audio/video content. SWF File format The SWF file format is used by Macromedia Flash multimedia files. See the Macromedia File Format Specification FAQ for more information on the SWF file format. The Problem Numerous RealNetworks products fail to properly validate SWF files allowing a buffer overflow to occur. By persuading a user to access a specially crafted SWF file with RealPlayer, a remote attacker may be able to execute arbitrary code. Considerations A complete list of affected software is available in the RealNetwork Security Update for March 2006. II. Impact By convincing a user to open a specially crafted SWF file with RealPlayer, a remote unauthenticated attacker can execute arbitrary code on a vulnerable system. III. Solution Patch RealPlayer Apply the patches supplied in the RealNetwork Security Update for March 2006. Disable RealPlayer in your web browser An attacker may be able to exploit this vulnerability by embedding the crafted SWF file in a webpage and convincing a user to access that page. Disabling RealPlayer in the web browser will eliminate this attack vector thereby reducing the chances of exploitation. To disable RealPlayer in Microsoft Internet Explorer,disable the RealPlayer ActiveX control. In other web browsers, such as Mozilla Firefox, disable the RealPlayer plugin. Systems Affected Vendor Status Date Updated RealNetworks, Inc. Vulnerable 31-Mar-2006 References http://www.kb.cert.org/vuls/id/451556 http://service.real.com/realplayer/security/03162006_player/en/ http://www.macromedia.com/licensing/developer/fileformat/faq/ http://secunia.com/advisories/19358/ http://secunia.com/advisories/19362/ http://secunia.com/advisories/19365/ http://secunia.com/advisories/19390/ Credit This issue was reported in RealNetwork Security Update for March 2006. RealNetworks credits John Heasman of NGSSoftware, Greg MacManus of iDEFENSE Labs, and Sowhat of Nevis Labs with providing information about this vulnerability. This document was written by Jeff Gennari. Other Information Date Public 03/22/2006 Date First Published 03/31/2006 09:58:45 PM Date Last Updated 04/05/2006 CERT Advisory CVE Name CVE-2006-0323 Metric 10.94 Document Revision 19 [***** End US-CERT Vulnerability Note VU#231028 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of US-CERT 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. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) Q-156: kernel-source-2.6.8 Q-157: Flex -- buffer overflow Q-158: kernel-source-2.6.8 Q-159: Exposure of machine account credentials in winbind log files Q-160: TWiki Rdiff and Preview Scripts Ignore Access Control Settings Q-161: Security Vulnerabilities found in the Xorg(1) X11R6.9 and X11R7.0 Server Q-162: openmotif security update Q-163: storebackup -- several vulnerabilities Q-164: HP Color LaserJet 2500 and 4600 Toolbox Running on Microsoft Windows Remote Unauthorized Disclosure of Information Q-165: Cisco Networking and Controller Vulnerabilities