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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2008.0211 -- [Win][Linux][Solaris][AIX] Symantec Scan Engine 5.1.2 RAR File Denial of Service and Buffer Overflow Vulnerabilities 27 February 2008 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Symantec Scan Engine version 5.1.2 Symantec AntiVirus for Network Attached Storage 4.3.16.39 & earlier Symantec AntiVirus Scan Engine 4.3.16.39 and earlier Symantec AntiVirus Scan Engine for Caching 4.3.16.39 & earlier Symantec AntiVirus Scan Engine for Clearswift 4.3.16.39 & earlier Symantec AntiVirus Scan Engine for Messaging 4.3.16.39 & earlier Symantec AntiVirus Scan Engine for MS ISA 4.3.16.39 & earlier Symantec AntiVirus Scan Engine for MS SharePoint 4.3.16.39 & earlier Symantec AntiVirus/Filtering for Domino MPE(AIX, Linux, Solaris) Symantec Mail Security for Microsoft Exchange 4.6.5.12 and earlier Symantec Mail Security for Microsoft Exchange 5.0.4.363 and earlier Symantec Scan Engine 5.1.4.24 and earlier Publisher: iDEFENSE Operating System: Windows Linux variants Solaris AIX Impact: Execute Arbitrary Code/Commands Denial of Service Access: Remote/Unauthenticated CVE Names: CVE-2008-0308 CVE-2008-0309 Original Bulletin: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=666 http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=667 Comment: This ESB contains two (2) separate iDefense advisories. These vulnerabilities affect multiple Symantec legacy products which utilise the Scan Engine. - --------------------------BEGIN INCLUDED TEXT-------------------- iDefense Security Advisory 02.26.08 http://labs.idefense.com/intelligence/vulnerabilities/ Feb 26, 2008 I. BACKGROUND Symantec Scan Engine is a standalone Anti-Virus Engine that exposes a scanning Application Programming Interface (API) directly to developers who wish to integrate protection into their own custom applications. More information is available on the vendor's site at the following URL. http://www.symantec.com/enterprise/products/overview.jsp?pcid=1008&pvid=836_1 II. DESCRIPTION Remote exploitation of a Denial of Service vulnerability in Symantec Scan Engine version 5.1.2 could allow an unauthenticated attacker to create a denial of service (DoS) condition. Symantec Scan Engine listens on TCP port 1344 to accept files for scanning using the Internet Content Adaptation Protocol (ICAP). If the service is sent a malformed RAR file, the service will consume massive amounts of memory. This can result in a denial of service condition for the application and operating system. III. ANALYSIS Exploitation allows remote unauthenticated attackers to cause the process to consume excessive amounts memory. In order to exploit this vulnerability, an attacker must be able to cause a malicious RAR file to be scanned by the Symantec Scan Engine. Normally, no authentication is required to reach the vulnerable code. IV. DETECTION iDefense confirmed the existence of this vulnerability in Symantec Scan Engine 5.1.2. This issue affects both the Windows and Linux builds of the product. Previous versions are suspected to be vulnerable. V. WORKAROUND iDefense is currently unaware of any workaround for this issue. VI. VENDOR RESPONSE Symantec has addressed this vulnerability by releasing updates for various versions of the Symantec Scan Engine. For more information, refer to their advisory at the following URL. http://www.symantec.com/avcenter/security/Content/2008.02.27.html VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2008-0308 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 06/14/2007 Initial vendor notification 06/14/2007 Initial vendor response 02/26/2008 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 © 2008 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. iDefense Security Advisory 02.26.08 http://labs.idefense.com/intelligence/vulnerabilities/ Feb 26, 2008 I. BACKGROUND Symantec Scan Engine is a standalone Anti-Virus Engine that exposes a scanning Application Programming Interface (API) directly to developers who wish to integrate protection into their own custom applications. More information is available on the vendor's site at the following URL. http://www.symantec.com/enterprise/products/overview.jsp?pcid=1008&pvid=836_1 II. DESCRIPTION Remote exploitation of a stack based buffer overflow vulnerability in Symantec Scan Engine version 5.1.2 could allow an unauthenticated attacker to execute arbitrary code with the privileges of the scan engine process. Symantec Scan Engine listens on TCP port 1344 to accept files for scanning using the Internet Content Adaptation Protocol (ICAP). If the service is sent a specially malformed RAR file, a stack-based buffer overflow will occur. III. ANALYSIS Exploitation allows remote unauthenticated attackers to execute arbitrary code with the privileges of the scan engine process. The scan engine can be configured to run either as a normal user or as root. In order to exploit this vulnerability, an attacker must be able to cause a malicious RAR file to be scanned by the Symantec Scan Engine. Normally, no authentication is required to reach the vulnerable code. IV. DETECTION iDefense has confirmed this vulnerability in the Linux build of the Symantec Scan Engine version 5.1.2. This issue does not affect the Windows build of the product. Previous versions are suspected to be vulnerable. V. WORKAROUND iDefense is currently unaware of any workaround for this issue. VI. VENDOR RESPONSE Symantec has addressed this vulnerability by releasing updates for various versions of the Symantec Scan Engine. For more information, refer to their advisory at the following URL. http://www.symantec.com/avcenter/security/Content/2008.02.27.html VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2008-0309 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 06/14/2007 Initial vendor notification 06/14/2007 Initial vendor response 02/26/2008 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 © 2008 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 iQCVAwUBR8S9Hih9+71yA2DNAQKKogP9HX2jKgJgJhvtcujDkUBVbgt9eXJ91MJR FeM8zGHBVm1k0HZij14QyiiU6022ZFykKGhwEEnpInBD94zDVhQe4g5MmjNkCxZu +KkilW7TfnsM0HBisR9V0thKgWgRPZse/biolQQ9RT21CFHzsRvUhsDjrzetTDVs SCKyHApD+PA= =rSgP -----END PGP SIGNATURE-----