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VERITAS Backup Exec remote registry access validation vulnerability

Vulnerability Note VU#584505

Original Release Date: 2005-06-24 | Last Revised: 2005-10-17


VERITAS Backup Exec contains a remote registry access validation vulnerability.


VERITAS Backup Exec is a data backup and recovery solution with support for over the network backup.

An access validation vulnerability in Backup Exec for Windows allows remote attackers to access the Windows registry on the backup server with administrator privileges.

For more details on the vulnerability, see the iDefense security advisory:
For information about affected software versions and patching, please see the VERITAS Software Security Advisory.

VERITAS Software has released information about this and five other security issues affecting VERITAS Backup Exec for Windows and Netware Servers. For more information about this specific vulnerability please see:

VERITAS Software Security Advisory VX05-003 available from
Information on the other vulnerabilities along with patch details can be found at:
Note that this vulnerability is reintroduced in Backup Exec 9.1 for Windows by applying Hotfix 51 or Service Pack 3:


An unauthenticated remote attacker can gain administrator access to the registry and then use this to gain complete administrative control of the backup server.


Apply a patch from the vendor. See for details.


Use network and/or host based firewalls to limit connectivity to backup servers so that only trusted servers that require connectivity are allowed access. Server/workstations being backed up should only have access to the necessary ports for the back up to work correctly. At minimum, some basic protection should be in effect at the network boundaries. Individual installations may operate on nonstandard ports, which should be taken into account when developing network traffic filtering rules. We understand the following ports may be of particular interest: 10 000, 610x (e.g., 1, 3, 6).

Vendor Information


Veritas SOFTWARE Affected

Updated:  June 24, 2005



Vendor Statement

We have not received a statement from the vendor.

Vendor Information

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


VERITAS Software released information about this vulnerability. See their security bulletin for details:

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

CVSS Metrics

Group Score Vector



VERITAS Software in its advisory states:"VERITAS Software appreciates the cooperation of Pedram Amini, iDEFENSE Labs in identifying this issue and coordinating with VERITAS Software in the resolution process."

This document was written by Robert Mead based on information in the VERITAS Software and iDefense advisories.

Other Information

CVE IDs: CVE-2005-0771
Severity Metric: 9.21
Date Public: 2005-06-22
Date First Published: 2005-06-24
Date Last Updated: 2005-10-17 16:29 UTC
Document Revision: 16

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