CA BrightStor ARCserve Backup Agent for MS SQL Server Buffer Overflow iDEFENSE Security Advisory 08.02.05 www.idefense.com/application/poi/display?id=287&type=vulnerabilities August 2, 2005 I. BACKGROUND BrightStor ARCserve Backup for Windows delivers backup and restore protection for all Windows server systems as well as Windows, Linux, Mac OS X and UNIX client environments. http://www3.ca.com/Solutions/ProductFamily.asp?ID=115 II. DESCRIPTION Remote exploitation of a buffer overflow in the Backup Agent for Microsoft SQL Server within Computer Associates' BrightStor ARCserve Backup Agent for SQL allows an attacker to execute arbitrary code with SYSTEM privileges. BrightStor ARCserve Backup Agent for Microsoft SQL Server is a component of the BrightStor ARCserve Backup system for handling backups of Microsoft SQL server data. When a string with a length over 3168 bytes, is sent to the listening port, 6070 by default, a stack based buffer overflow occurs. III. ANALYSIS Successful exploitation allows remote attackers to execute arbitrary code with SYSTEM level privileges. This allows for complete system compromise including the installation or removal of software and access to any file on the system. IV. DETECTION iDEFENSE has confirmed the existence of this vulnerability in Computer Associates BrightStor ARCserve Backup Agent for Microsoft SQL Server version 11.0. It is suspected that all versions are vulnerable. V. WORKAROUND Restrict remote access at the network boundary, unless remote parties require service. Access to the affected host should be filtered at the network boundary if global accessibility is not required. Restricting access to only trusted hosts and networks may reduce the likelihood of exploitation. VI. VENDOR RESPONSE A vendor advisory for this vulnerability can be found at: http://www3.ca.com/securityadvisor/vulninfo/vuln.aspx?id=33239 VII. CVE INFORMATION The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2005-1272 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 04/25/2005 Initial vendor notification 04/25/2005 Initial vendor response 08/02/2005 Coordinated public disclosure IX. CREDIT The discoverer of this vulnerability wishes to remain anonymous. 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 customerservice@private 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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