News & Media
Become a member »
» ESB-2007.0899 -- [Win] -- AOL AmpX ActiveX Control M...
ESB-2007.0899 -- [Win] -- AOL AmpX ActiveX Control Multiple Buffer Overflow Vulnerabilities
12 November 2007
Click here for printable version
-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0899 -- [Win] AOL AmpX ActiveX Control Multiple Buffer Overflow Vulnerabilities 12 November 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: AOL Radio AmpX.dll 220.127.116.11 and prior Publisher: iDEFENSE Operating System: Windows Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated CVE Names: CVE-2007-5755 Original Bulletin: http://labs.idefense.com/intelligence/vulnerabilities/ - --------------------------BEGIN INCLUDED TEXT-------------------- iDefense Security Advisory 11.09.07 http://labs.idefense.com/intelligence/vulnerabilities/ Nov 09, 2007 I. BACKGROUND America Online's AmpX is an ActiveX control associated with AOL Radio. It is typically used for embedding streaming audio content in web pages. For more information visit the following URL. http://music.aol.com/radioguide/bb/ II. DESCRIPTION Remote exploitation of multiple buffer overflow vulnerabilities in AOL's AmpX ActiveX control could allow attackers to execute arbitrary code with the credentials of the user visiting a malicious website. Several methods within the vulnerable ActiveX control (CLSID B49C4597-8721-4789-9250-315DFBD9F525) were found to be vulnerable to stack-based buffer overflows. In each case, variable length attacker supplied data is copied into a fixed-size stack buffer using the strcpy() function. Since no input validation is performed, it is possible to corrupt stack memory, resulting in an exploitable condition. III. ANALYSIS Exploitation allows an attacker to execute arbitrary code in the context of the user viewing a malicious web page. In order to be successful, the attacker must persuade a user with the vulnerable control installed into viewing a malicious web page. No further interaction is required. IV. DETECTION iDefense has confirmed the existence of this vulnerability in version 18.104.22.168 of America Online's AmpX.dll. Other versions are suspected to be vulnerable. V. WORKAROUND In order to prevent exploitation of this vulnerability, an administrator can set the kill-bit for the vulnerable control. While this does not fix the vulnerability, it does prevent the control from being loaded in Internet Explorer. VI. VENDOR RESPONSE "An updated version of AOL Radio with enhanced security features is now available. AOL recommends that you download and install the update to get the best and most secure performance from AOL Radio. If you use AIM or other AOL software, you will automatically receive a prompt to update AOL Radio and you do not need to download and install this update now. Otherwise, please download the update from the URL below and double-click on the file to finish updating AOL Radio: http://radaol-prod-web-rr.streamops.aol.com/mediaplugin/unagi_patch.exe" VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-5755 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems. VIII. DISCLOSURE TIMELINE 04/24/2007 Initial vendor notification 04/24/2007 Initial vendor response 11/09/2007 Coordinated public disclosure IX. CREDIT The discoverer of this vulnerability wishes to remain anonymous. Get paid for vulnerability research http://labs.idefense.com/methodology/vulnerability/vcp.php Free tools, research and upcoming events http://labs.idefense.com/ X. LEGAL NOTICES Copyright © 2007 iDefense, Inc. Permission is granted for the redistribution of this alert electronically. It may not be edited in any way without the express written consent of iDefense. If you wish to reprint the whole or any part of this alert in any other medium other than electronically, please e-mail firstname.lastname@example.org for permission. Disclaimer: The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information. _______________________________________________ - --------------------------END INCLUDED TEXT-------------------- You have received this e-mail bulletin as a result of your organisation's registration with AusCERT. The mailing list you are subscribed to is maintained within your organisation, so if you do not wish to continue receiving these bulletins you should contact your local IT manager. If you do not know who that is, please send an email to email@example.com and we will forward your request to the appropriate person. NOTE: Third Party Rights This security bulletin is provided as a service to AusCERT's members. As AusCERT did not write the document quoted above, AusCERT has had no control over its content. The decision to follow or act on information or advice contained in this security bulletin is the responsibility of each user or organisation, and should be considered in accordance with your organisation's site policies and procedures. AusCERT takes no responsibility for consequences which may arise from following or acting on information or advice contained in this security bulletin. NOTE: This is only the original release of the security bulletin. It may not be updated when updates to the original are made. If downloading at a later date, it is recommended that the bulletin is retrieved directly from the author's website to ensure that the information is still current. Contact information for the authors of the original document is included in the Security Bulletin above. If you have any questions or need further information, please contact them directly. Previous advisories and external security bulletins can be retrieved from: http://www.auscert.org.au/render.html?cid=1980 If you believe that your computer system has been compromised or attacked in any way, we encourage you to let us know by completing the secure National IT Incident Reporting Form at: http://www.auscert.org.au/render.html?it=3192 =========================================================================== Australian Computer Emergency Response Team The University of Queensland Brisbane Qld 4072 Internet Email: firstname.lastname@example.org Facsimile: (07) 3365 7031 Telephone: (07) 3365 4417 (International: +61 7 3365 4417) AusCERT personnel answer during Queensland business hours which are GMT+10:00 (AEST). On call after hours for member emergencies only. =========================================================================== -----BEGIN PGP SIGNATURE----- Comment: http://www.auscert.org.au/render.html?it=1967 iQCVAwUBRzesEih9+71yA2DNAQIQAwP/TA/hl7iGMIuyAeXW9wuBxB9D25qKNBpP bwFTc+aVuV1XwoKW/ZPq7j4gBmZOYfnbW2lu9uvk7o+TJD5Fuc+51kjHLPb22d/n t05lx7izKj9Bh9fgODEMD4w/MERqmMAikCBiH/+9uKjjCBDwW3pQ/iRg4gAYyYtO R3SktiXE61Y= =m6VC -----END PGP SIGNATURE-----
Comments? Click here