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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2005.0189 -- ISS Protection Advisory Trend Micro AntiVirus Library Heap Overflow 25 February 2005 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: Trend Micro OfficeScan Corp. Edition Trend Micro Client / Server / Messaging Suite for SMB Trend Micro InterScan eManager Trend Micro InterScan Messaging Security Suite Trend Micro InterScan VirusWall Trend Micro InterScan Web Security Suite Trend Micro PC-cillin Internet Security Trend Micro PortalProtect for SharePoint Trend Micro ScanMail eManager Trend Micro ScanMail for Lotus Domino Trend Micro ScanMail for Microsoft Exchange Trend Micro ServerProtect Publisher: ISS Operating System: Windows UNIX variants Linux variants Novell NetWare Impact: Execute Arbitrary Code/Commands Access: Remote/Unauthenticated Original Bulletin: http://xforce.iss.net/xforce/alerts/id/189 - --------------------------BEGIN INCLUDED TEXT-------------------- Internet Security Systems Protection Advisory February 24, 2005 Trend Micro AntiVirus Library Heap Overflow Summary: ISS has shipped protection for a flaw X-Force has discovered in Trend Micro AntiVirus Library. The Trend Micro AntiVirus Library is widely relied upon to provide antivirus capabilities to desktop, server, and gateway systems. Also, several large vendors and ISP's implement Trend Micro's AntiVirus Library in their products. By crafting an ARJ file, an attacker is able to trigger a heap overflow within the process importing the Trend Micro AntiVirus Library. ISS Protection Strategy: ISS has provided preemptive protection for these vulnerabilities. We recommend that all customers apply applicable ISS product updates. Network Sensor 7.0, Proventia A and G: XPU 24.2 / 2/8/05 ARJ_Long_FileName_Detected Proventia M: XPU 1.41 / 2/8/05 ARJ_Long_FileName_Detected Server Sensor 7.0: XPU 24.2 / 2/8/05 ARJ_Long_FileName_Detected Desktop Protector 7.0: Version EOA / 2/8/05 ARJ_Long_FileName_Detected BlackICE Agent for Server 3.6: Version EOA / 2/8/05 ARJ_Long_FileName_Detected These updates are now available from the ISS Download Center at: http://www.iss.net/download. Business Impact: Compromise of antivirus protected networks and machines may lead to exposure of confidential information, loss of productivity, and further network compromise. Successful exploitation of this vulnerability could be used to gain unauthorized access to networks and machines being protected by Trend Micro AntiVirus Library product. Implementations of Trend Micro AntiVirus Library are likely vulnerable through common protocols, e.g. SMTP, HTTP, FTP. No authentication is required for an attacker to leverage this vulnerability to compromise an antivirus protected network or machine. It is likely Trend Micro AntiVirus Library implementations are vulnerable in their default configurations. Affected Products: Trend Micro Client / Server / Messaging Suite for SMB for Windows Trend Micro Client / Server Suite for SMB for Windows Trend Micro InterScan eManager Trend Micro InterScan Messaging Security Suite for Linux Trend Micro InterScan Messaging Security Suite for Windows Trend Micro InterScan Messaging Security Suite for Solaris Trend Micro InterScan VirusWall for Linux Trend Micro InterScan VirusWall for Windows Trend Micro InterScan VirusWall for HP-UX Trend Micro InterScan VirusWall for AIX Trend Micro InterScan VirusWall for Solaris Trend Micro InterScan VirusWall for SMB Trend Micro InterScan Web Security Suite for Linux Trend Micro InterScan Web Security Suite for Windows Trend Micro InterScan Web Security Suite for Solaris Trend Micro InterScan WebManager Trend Micro InterScan WebProtect for ISA Trend Micro OfficeScan Corp. Edition Trend Micro PC-cillin Internet Security Trend Micro PortalProtect for SharePoint Trend Micro ScanMail eManager Trend Micro ScanMail for Lotus Domino on Windows Trend Micro ScanMail for Lotus Domino on AS/400 Trend Micro ScanMail for Lotus Domino on S/390 Trend Micro ScanMail for Lotus Domino on AIX Trend Micro ScanMail for Lotus Domino on Solaris Trend Micro ScanMail for Microsoft Exchange Trend Micro ServerProtect for Linux Trend Micro ServerProtect for Windows / Novell Netware on Windows Trend Micro ServerProtect for Windows / Novell Netware on Netware Note: Additional versions may be affected, please contact your vendor for confirmation. In addition, several ISPs and vendors also use Trend Micro AntiVirus Library and are likely vulnerable. Description: Trend Micro Antivirus Library is used to parse different file formats to detect malware. One of the modules in Trend Micro Antivirus Library parses the ARJ file format. Before ARJ decompression, the library does not properly check the length of main and local header file names. This file name is copied into a heap buffer with a file name member allotted 0x200 bytes. While the overall heap chunk is allocated enough space for this buffer, there are various pointers in the structure that the attacker may overwrite in order to gain control with immediate context. The result is a non-standard arbitrary heap overflow with moderate character restrictions. This vulnerability can be triggered by an unauthenticated remote attacker, without user interaction, by sending an e-mail containing a crafted ARJ file to the target Trend Micro AntiVirus Library on client, server, and gateway implementations. Additional attack vectors exist over other common protocols (e.g. HTTP, FTP, POP3), but some may require user interaction. The ISS X-Press Updates detailed above have the ability to protect against attack attempts targeted at Trend Micro products. Additional Information: Trend Micro Advisory: http://www.trendmicro.com/vinfo/secadvisories/default6.asp?VName=Vulnerability+in+VSAPI+ARJ+parsing+could+allow+Remote+Code+execution Credit: This vulnerability was discovered and researched by Alex Wheeler of the ISS X-Force. ______ About Internet Security Systems (ISS) Internet Security Systems, Inc. (ISS) is the trusted security expert to global enterprises and world governments, providing products and services that protect against Internet threats. An established world leader in security since 1994, ISS delivers proven cost efficiencies and reduces regulatory and business risk across the enterprise for more than 11,000 customers worldwide. ISS products and services are based on the proactive security intelligence conducted by ISS’ X-Force® research and development team – the unequivocal world authority in vulnerability and threat research. Headquartered in Atlanta, Internet Security Systems has additional operations throughout the Americas, Asia, Australia, Europe and the Middle East. Copyright (c) 2005 Internet Security Systems, Inc. All rights reserved worldwide. This document is not to be edited or altered in any way without the express written consent of Internet Security Systems, Inc. If you wish to reprint the whole or any part of this document, please email xforce@iss.net for permission. You may provide links to this document from your web site, and you may make copies of this document in accordance with the fair use doctrine of the U.S. copyright laws. Disclaimer: The information within this document may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall the author/distributor (Internet Security Systems X-Force) be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information. X-Force PGP Key available on MIT's PGP key server and PGP.com's key server, as well as at http://www.iss.net/security_center/sensitive.php Please send suggestions, updates, and comments to: X-Force xforce@iss.net of Internet Security Systems, Inc. - --------------------------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 iQCVAwUBQh5ziih9+71yA2DNAQI1WAP9GAa7fi15FMXskFp/A/0/1rocn6lL087/ 7M9u0gKnLey1AxfjuKNP8mhAogn9NteAZhrm93CQW07Ux2X62qBh6fQSz2n2x0cE k3Aj0zjpaLiMypCzWoc3htccI6sXEC/4H5bTZY4RKS2zCE/tqBhTLaWVZpVJQSVZ lLjDH/gqOkA= =z2gG -----END PGP SIGNATURE-----