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| Subject: | [Full-disclosure] iDefense Security Advisory 01.23.06: Computer Associates iTechnology iGateway Service Content-Length Buffer Overflow Vulnerability |
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| Date: | Mon, 23 Jan 2006 13:41:14 -0500 |
Computer Associates iTechnology iGateway Service Content-Length Buffer Overflow Vulnerability
iDefense Security Advisory 01.23.06 http://www.idefense.com/intelligence/vulnerabilities/display.php?id=376 January 23, 2006
I. BACKGROUND
iTechnology is an integration technology which provides standard web service interfaces to third-party products, exposing normalized security event data and information in XML format.
II. DESCRIPTION
Remote exploitation of an input validation error in Computer Associates, Inc.'s iTechnology allows remote attackers to execute arbitrary code.
The vulnerability specifically exists in the iGateway service that listens on port 5250 for standard HTTP or SSL traffic. The iGateway service fails to properly handle negative HTTP Content-Length values. iGateway parses the negative content-length value from an HTTP request and uses the value directly in a malloc() heap allocation call. By supplying negative values, the heap allocation call will return a very small buffer. Subsequent to the malloc() call, a memcpy of the supplied URI into the allocated buffer can overflow into the heap. A remote attacker can send a request with a very large URI and a negative content-length to corrupt the heap and potentially execute arbitrary code.
III. ANALYSIS
Successful exploitation of this vulnerability allows remote attackers to execute arbitrary code with SYSTEM level permissions. The iTechnology package is distributed with various Computer Associates eTrust brand software. Any attacker who can reach port 5250 on an affected host can attempt to exploit this vulnerability.
IV. DETECTION
iDefense has confirmed the existence of this vulnerability in Computer Associates iTechnology iGateway 4.0. It is suspected all versions of the iGateway package prior to and including 4.0.050615 are vulnerable.
Affected platforms: AIX, HP-UX, Linux Intel, Solaris, and Windows
V. WORKAROUND
iDefense is unaware of any effective workarounds at this time.
VI. VENDOR RESPONSE
The vendor has released the following advisory to address this vulnerability:
http://www3.ca.com/securityadvisor/vulninfo/vuln.aspx?id=33778
Vendor patches are available for download at:
ftp://ftp.ca.com/pub/iTech/downloads
VII. CVE INFORMATION
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2005-3653 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
11/15/2005 Initial vendor notification 11/15/2005 Initial vendor response 01/23/2006 Coordinated public disclosure
IX. CREDIT
iDefense credits Erika Mendoza with the discovery of this vulnerability.
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X. LEGAL NOTICES
Copyright (c) 2006 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 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.
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