Vulnerability Note VU#860048

Computer Associates BrightStor ARCserv and Protection Suite products RPC buffer overflow vulnerabilities

Original Release date: 02 Nov 2006 | Last revised: 06 Feb 2007


Multiple vulnerabilities exist in Computer Associates backup products. If successfully exploited, these vulnerabilities may allow an attacker to execute arbitrary code.


BrightStor ARCserve Backup is a backup and data retention tool that integrates with other BrightStor Data Availability and BrightStor Storage Management solutions. Computer Associates Protection Suites offer multiple Computer Associates security and data recovery products in a single package.

BrightStor and CA (Computer Associates) Protection Suite products contain multiple buffer overflow vulnerabilities due to incorrect handling of RPC requests. These overflows may be exploited by sending a malformed RPC request with Opnum 43 (port 6503/tcp) or Opnum 45 (port 6503/tcp) to a vulnerable system.

Note that only the Microsoft Windows versions of Computer Associates products are affected by this vulnerability.

For more information, including a list of affected products, refer to the Computer Associates Security Advisory.


A remote, unauthenticated attacker may be able to execute arbitrary code with SYSTEM privileges.


According to Computer Associates:
Customers with vulnerable versions of the BrightStor ARCserve Backup products should upgrade to the latest versions which will be available for download from on or before October 5.

Restrict Access

Restricting access to port 6503/tcp at the network perimeter may mitigate the impact of this vulnerability.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Computer AssociatesAffected-02 Nov 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



This vulnerability was reported by the TippingPoint and the Zero Day Initiative. TippingPoint credits LSsecurity with reporting this vulnerability.

This document was written by Ryan Giobbi.

Other Information

  • CVE IDs: CVE-2006-5143
  • Date Public: 05 Oct 2006
  • Date First Published: 02 Nov 2006
  • Date Last Updated: 06 Feb 2007
  • Severity Metric: 0.28
  • Document Revision: 47


If you have feedback, comments, or additional information about this vulnerability, please send us email.