INFORMATION BULLETIN

S-223: IBM Tivoli Provisioning Manager for OS Deployment (TPMfOSD) Vulnerability

[iDefense Labs PUBLIC ADVISORY: 01.22.08]

[***** Start iDefense Labs PUBLIC ADVISORY: 01.22.08 *****]

IBM Tivoli PMfOSD HTTP Request Method Buffer Overflow Vulnerability

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 customer service 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 iDefense Labs PUBLIC ADVISORY: 01.22.08 *****]

---

CIAC wishes to acknowledge the contributions of iDefense for the information contained in this bulletin.

---

CIAC services are available to DOE, DOE Contractors, and the NIH. CIAC can be contacted at:

    Voice:          +1 925-422-8193 (7 x 24)
    FAX:            +1 925-423-8002
    STU-III:        +1 925-423-2604
    E-mail:          ciac@ciac.org
    World Wide Web:  http://www.ciac.org/
    Anonymous FTP:   ftp.ciac.org

---

This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes.

---

UCRL-MI-119788
[Privacy and Legal Notice]
IBM Tivoli PMfOSD HTTP Request Method Buffer Overflow Vulnerability 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 customer service 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 iDefense Labs PUBLIC ADVISORY: 01.22.08 *****] _______________________________________________________________________________ CIAC wishes to acknowledge the contributions of iDefense Labs for the information contained in this bulletin. _______________________________________________________________________________ CIAC, the Computer Incident Advisory Capability, is the computer security incident response team for the U.S. Department of Energy (DOE) and the emergency backup response team for the National Institutes of Health (NIH). CIAC is located at the Lawrence Livermore National Laboratory in Livermore, California. CIAC is also a founding member of FIRST, the Forum of Incident Response and Security Teams, a global organization established to foster cooperation and coordination among computer security teams worldwide. CIAC services are available to DOE, DOE contractors, and the NIH. CIAC can be contacted at: Voice: +1 925-422-8193 (7x24) FAX: +1 925-423-8002 STU-III: +1 925-423-2604 E-mail: ciac@ciac.org Previous CIAC notices, anti-virus software, and other information are available from the CIAC Computer Security Archive. World Wide Web: http://www.ciac.org/ Anonymous FTP: ftp.ciac.org PLEASE NOTE: Many users outside of the DOE, ESnet, and NIH computing communities receive CIAC bulletins. If you are not part of these communities, please contact your agency's response team to report incidents. Your agency's team will coordinate with CIAC. The Forum of Incident Response and Security Teams (FIRST) is a world-wide organization. A list of FIRST member organizations and their constituencies can be obtained via WWW at http://www.first.org/. This document was prepared as an account of work sponsored by an agency of the United States Government. Neither the United States Government nor the University of California nor any of their employees, makes any warranty, express or implied, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Reference herein to any specific commercial products, process, or service by trade name, trademark, manufacturer, or otherwise, does not necessarily constitute or imply its endorsement, recommendation or favoring by the United States Government or the University of California. The views and opinions of authors expressed herein do not necessarily state or reflect those of the United States Government or the University of California, and shall not be used for advertising or product endorsement purposes. LAST 10 CIAC BULLETINS ISSUED (Previous bulletins available from CIAC) S-213: Nukedit 'email' Parameter Vulnerability S-214: SurgeMail and WebMail 'Page' Command Vulnerability S-215: Symantec Backup Exec Scheduler ActiveX Control Multiple Vulnerabilities S-216: Juniper Networks Secure Access 2000 'rdremediate.cgi' Vulnerability S-217: Drupal Multiple HTML Vulnerabilities S-218: gd Security Update S-219: Juniper Networks Secure Access 2000 Web Root Path Vulnerability S-220: PHP-Nuke My_eGallery Module 'gid' Parameter Vulnerability S-221: Learn2 STRunner ActiveX Control Vulnerabilities S-222: Evolution Security Update