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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 =========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2008.0090 -- [Win][UNIX/Linux] IBM Tivoli PMfOSD HTTP Request Method Buffer Overflow Vulnerability 25 January 2008 =========================================================================== AusCERT Security Bulletin Summary --------------------------------- Product: IBM Tivoli Provisioning Manager for OS Deployment 5.1.0.3 and prior Publisher: iDEFENSE Operating System: UNIX variants (UNIX, Linux, OSX) Windows Impact: Administrator Compromise Access: Remote/Unauthenticated CVE Names: CVE-2008-0401 Original Bulletin: http://labs.idefense.com/intelligence/vulnerabilities/display.php?id=647 Comment: IBM has released Interim Fix 3, Version 5.1.0.3. - --------------------------BEGIN INCLUDED TEXT-------------------- iDefense Security Advisory 01.22.08 http://labs.idefense.com/intelligence/vulnerabilities/ Jan 22, 2008 I. BACKGROUND IBM Corp.'s Tivoli Provisioning Manager for OS Deployment is a network boot server that facilitates central management of networked workstations. It implements Preboot Execution Environment (PXE), a Web-based administration service, DHCP, TFTP, and several additional protocols. More information can be found at the following URL. http://www-306.ibm.com/software/tivoli/products/prov-mgr-os-deploy/ II. DESCRIPTION Remote exploitation of a buffer overflow vulnerability in the web server component of IBM Corp.'s Tivoli Provisioning Manager for OS Deployment allows attackers to cause a denial of service condition or potentially execute arbitrary code with SYSTEM privileges. This vulnerability specifically exists within the logging functionality of the web server component. By making requests with a large HTTP request method, an attacker can cause a static-sized buffer to be overrun with data they supplied. III. ANALYSIS Exploitation allows an attacker to cause a denial of service condition or potentially execute arbitrary code with SYSTEM privileges. In order to exploit this vulnerability, an attacker must be able to establish a session on TCP port 443 with target machine. No credentials are required to trigger the vulnerable code path. IV. DETECTION iDefense has confirmed the existence of this vulnerability in IBM Tivoli Provisioning Manager for OS Deployment version 5.1.0.3. Previous versions may also be affected. V. WORKAROUND iDefense is currently unaware of any workarounds for this issue. VI. VENDOR RESPONSE The IBM Tivoli team has addressed this vulnerability within Tivoli Provisioning Manager for OS Deployment Interim Fix 3, Version 5.1.0.3. More information is available from IBM Document swg24018010 at the following URL. http://www-1.ibm.com/support/docview.wss?uid=swg24018010 VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2008-0401 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 10/24/2007 Initial vendor notification 10/24/2007 Initial vendor response 01/22/2008 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. 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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 iQCVAwUBR5kiyyh9+71yA2DNAQK3XwQAnjsIJMLmYR8CSsYfTeqoob+DA1BDDtKH iA6elclVjZcRGcrMpyQleotHa50Pt4xc44QQFDplvwu8BXXgglo7dn/Hkejyj5DK y46/iVE6ivi9BYMTGzqwANTkAvPhfZiWYJPnI19GSjCrFQmI4sx5KSS5mdHxWr1Z HaHsckV5+Os= =38k+ -----END PGP SIGNATURE-----