Computer Associates License Client PUTOLF Buffer Overflow iDEFENSE Security Advisory 03.02.05 www.idefense.com/application/poi/display?id=211&type=vulnerabilities March 2, 2005
I. BACKGROUND The Computer Associates License Client/Server applications provide a method for CA products to register their licenses on the network. The License Client and Server are distributed with almost all CA software distributions. More information about Computer Associates software products is available from: http://www3.ca.com/Products/ II. DESCRIPTION Remote exploitation of a buffer overflow vulnerability in Computer Associates International Inc. License Server can allow attackers to execute arbitrary code. The vulnerability specifically exists in the handling of the filename used in PUTOLF requests. A PUTOLF request looks something like this: A0 PUTOLF 1 H A 10 name 2700 File Contents<EOM> Using a name over 252 bytes long, it is possible to overwrite the saved instruction pointer, allowing execution of arbitrary code. III. ANALYSIS Exploitation allows remote attackers to execute arbitrary code under the privileges of Local System (on Windows platforms) or root (on Linux platforms). The CA License Client runs by default and is packaged with almost all CA software. IV. DETECTION iDEFENSE has confirmed that CA License Client 0.1.0.15 is vulnerable. It is suspected that most CA products are running vulnerable versions of the client and/or server. V. WORKAROUND Use a firewall to only allow trusted hosts to connect to the Computer Associates License Server and Client ports. VI. VENDOR RESPONSE A vendor advisory for this issue is available at: http://supportconnectw.ca.com/public/ca_common_docs/security_notice.asp Patches for this issue are available at: http://supportconnectw.ca.com/public/reglic/downloads/licensepatch.asp#a lp VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2005-0582 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 02/08/2005 Initial vendor notification 02/09/2005 Initial vendor response 03/02/2005 Coordinated public disclosure IX. CREDIT This vulnerability was discovered by Greg MacManus, iDEFENSE Labs. Get paid for vulnerability research http://www.idefense.com/poi/teams/vcp.jsp Free tools, research and upcoming events http://labs.idefense.com X. LEGAL NOTICES Copyright (c) 2005 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 email [EMAIL PROTECTED] 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. _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
