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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2007.0308 -- [Win] Symantec Norton Internet Security 2006 COM Object Security ByPass Vulnerability 10 May 2007 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Norton Internet Security 2006 and prior Publisher: iDEFENSE Operating System: Windows Impact: Reduced Security Access: Remote/Unauthenticated CVE Names: CVE-2006-3456 Original Bulletin: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=529 http://www.symantec.com/home_homeoffice/products/overview.jsp?pcid=is&pvid=nis2006 - --------------------------BEGIN INCLUDED TEXT-------------------- Symantec Norton Internet Security 2006 COM Object Security ByPass Vulnerability iDefense Security Advisory 05.09.07 http://labs.idefense.com/intelligence/vulnerabilities/ May 09, 2007 I. BACKGROUND Norton Internet Security 2006 is a comprehensive system security suite that offers protection from spyware, viruses, identity theft, spam, and malicious network traffic. More information can be found on the vendors site at the following URL. http://www.symantec.com/home_homeoffice/products/overview.jsp?pcid=is&pvid=nis2006 II. DESCRIPTION Remote exploitation of a design error vulnerability in an ActiveX control installed by Symantec Norton Internet Security 2006 could allow for the execution of arbitrary code. Norton Internet Security 2006 installs the following ActiveX control which is registered as safe for scripting: Progid: Symantec.Norton.AntiVirus.NAVOptions Clsid: 085ABFE2-D753-445C-8A2A-D4BD46CE0811 File: C:\Program Files\Norton Internet Security\Norton AntiVirus\NAVOpts.dll Version: 12.2.0.13 This control was designed for use in a application embedded web browser rather than a native Internet Explorer window. When this control is loaded in a standard browser window, it throws an error during initialization which leaves the browser in a defunct state. After the error dialog displays, other Symantec ActiveX Controls can be created without error even if they are not marked as safe for scripting. This can lead to remote code execution if the unsafe controls contain exploitable methods. III. ANALYSIS Exploitation allows malicious websites to load certain Symantec ActiveX Controls which were not designed or secured for web use. This condition can lead to the execution of arbitrary code in situations where unsafe controls contain exploitable vulnerabilities. IV. DETECTION iDefense confirmed the existence of this vulnerability within version 12.2.0.13 of NavOpts.dll as distributed with Norton Internet Security 2006. Prior versions are suspected to be vulnerable. V. WORKAROUND Setting the kill-bit for the ActiveX control will prevent this component from loading in Internet Explorer. Although this will prevent potential exploitation, it may also negatively impact the functionality of the application. VI. VENDOR RESPONSE Symantec has addressed this vulnerability with a software update. The update is available via their LiveUpdate channels. For more information, consult their advisory at the following URL. http://www.symantec.com/avcenter/security/Content/2007.05.09.html VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2006-3456 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 12/13/2006 Initial vendor notification 12/13/2006 Initial vendor response 05/09/2007 Coordinated public disclosure IX. CREDIT This vulnerability was reported to iDefense by Peter Vreugdenhil. 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 customerservice@idefense.com 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 auscert@auscert.org.au 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: auscert@auscert.org.au 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 iQCVAwUBRkLDdih9+71yA2DNAQLYkQP7BkrGZ1BD5LEI1SVSvZ71mhdtfkTEATEg 8C/gTfdKnNHGb7jhiPZRLOSEPFDJXNU/PehhDZQZy0h7dPTil5lxqqJLeIBpLYlA GZ5/WR/uodh4+/1IjGI1+qn1VzcVUsGFMTqgpurCZmxf/sG5BJEC/ejBmba1GpKU BPD/IceQiDs= =tO8y -----END PGP SIGNATURE-----