__________________________________________________________ The U.S. Department of Energy Computer Incident Advisory Capability ___ __ __ _ ___ / | /_\ / \___ __|__ / \ \___ __________________________________________________________ INFORMATION BULLETIN AOL Radio AOLMediaPlaybackControl.exe Vulnerability [US-CERT Vulnerability Note VU#568681] January 11, 2008 19:00 GMT Number S-115 ______________________________________________________________________________ PROBLEM: The AOL AOLMediaPlaybackControl application contains a stack buffer overflow, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. PLATFORM: AOL AOLMediaPlaybackControl DAMAGE: May allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. SOLUTION: Upgrade to the appropriate version. ______________________________________________________________________________ VULNERABILITY The risk is LOW. May allow a remote, unauthenticated attacker ASSESSMENT: to execute arbitrary code on a vulnerable system. ______________________________________________________________________________ LINKS: CIAC BULLETIN: http://www.ciac.org/ciac/bulletins/s-115.shtml ORIGINAL BULLETIN: http://www.kb.cert.org/vuls/id/568681 CVE: http://www.cve.mitre.org/cgi-bin/cvename.cgi?name= CVE-2007-6250 ______________________________________________________________________________ [***** Start US-CERT Vulnerability Note VU#568681 *****] Vulnerability Note VU#568681 AOL Radio AOLMediaPlaybackControl.exe stack buffer overflow Overview The AOL AOLMediaPlaybackControl application contains a stack buffer overflow, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system. I. Description AOL includes an ActiveX control called AmpX, which is used with AOL Radio for streaming audio in web pages. The AOL AmpX ActiveX control, which is provided by AmpX.dll, uses a program called AOLMediaPlaybackControl.exe. The AOLMediaPlaybackControl application contains a stack buffer overflow that is exploitable via the AmpX ActiveX control's AppendFileToPlayList() method. II. Impact By convincing a user to view a specially crafted HTML document (e.g., a web page or an HTML email message or attachment), an attacker may be able to execute arbitrary code with the privileges of the user. III. Solution Apply an update This vulnerability is addressed in an unspecified automatic update provided by AOL, which removes the AmpX control and AOLMediaPlaybackControl.exe. The AmpX ActiveX control version 2.6.2.6 also prevents the buffer overflow vulnerability in AOLMediaPlaybackControl.exe from being reached. This update is also available as a manual install as the Unagi update. If you are unable to apply an update, please consider the following workarounds Disable the AmpX ActiveX control in Internet Explorer The ActiveX control associated with AOLMediaPlaybackControl.exe can be disabled in Internet Explorer by setting the kill bit for the following CLSIDs: {B49C4597-8721-4789-9250-315DFBD9F525} {FA3662C3-B8E8-11D6-A667-0010B556D978} More information about how to set the kill bit is available in Microsoft Support Document 240797. Alternatively, the following text can be saved as a .REG file and imported to set the kill bit for these controls: Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{B49C4597-8721-4789-9250-315DFBD9F525}] "Compatibility Flags"=dword:00000400 [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\{FA3662C3-B8E8-11D6-A667-0010B556D978}] "Compatibility Flags"=dword:00000400 Disable ActiveX Disabling ActiveX controls in the Internet Zone (or any zone used by an attacker) appears to prevent exploitation of this and other ActiveX vulnerabilities. Instructions for disabling ActiveX in the Internet Zone can be found in the "Securing Your Web Browser" document. Systems Affected Vendor Status Date Updated America Online, Inc. Vulnerable 11-Jan-2008 References http://www.cert.org/tech_tips/securing_browser/#Internet_Explorer Credit This vulnerability was reported by Will Dormann of the CERT/CC. This document was written by Will Dormann. Other Information Date Public 01/09/2008 Date First Published 01/09/2008 02:23:25 PM Date Last Updated 01/11/2008 CERT Advisory CVE Name CVE-2007-6250 Metric 4.65 Document Revision 6 [***** End US-CERT Vulnerability Note VU#568681 *****] _______________________________________________________________________________ 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. 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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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