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Computer Associates BrightStor ARCserve Backup Tape Engine fails to properly handle RPC requests

Vulnerability Note VU#437300

Original Release Date: 2006-11-22 | Last Revised: 2007-03-19


A vulnerability exists in the Computer Associates BrightStor ARCserve Backup Tape Engine. If successfully exploited, this vulnerability may allow a remote 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. The Tape Engine features allow BrightStor ARCserve Backup products to use tape drives for storage.

The BrightStor ARCserve Backup Tape Engine contains a vulnerability that is caused by incorrect handling of RPC requests. This vulnerability may be exploited by sending a malformed RPC request to port 6502/tcp on a vulnerable system.


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


This vulnerability is addressed in BrightStor ARCserve Backup r11.5 Service Pack 2.

Restrict Access

Restricting access to port 6502/tcp at the network perimeter may mitigate the impact of this vulnerability.

Vendor Information

Affected   Unknown   Unaffected

Computer Associates

Updated:  January 12, 2007



Vendor Statement


Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


See for more details.

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

CVSS Metrics

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



This issue was reported by LSsecurity.

This document was written by Ryan Giobbi.

Other Information

CVE IDs: CVE-2006-6076
Severity Metric: 3.59
Date Public: 2006-11-21
Date First Published: 2006-11-22
Date Last Updated: 2007-03-19 13:33 UTC
Document Revision: 37

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