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VERITAS Backup Exec Server Service contains a buffer overflow vulnerability

Vulnerability Note VU#352625

Original Release Date: 2005-06-24 | Last Revised: 2005-07-22


A heap-based buffer overflow in VERITAS Backup Exec Admin Plus Pack Option may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.


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

VERITAS Backup Exec Server products have a heap overflow vulnerability that may be exploited by an unauthenticated remote attacker who can connect to the TCP port on which the Backup Exec server service is listening.

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 VX05-006 available from

Information on the other vulnerabilities along with patch details can be found at:


An unauthenticated remote attacker can execute arbitrary code on the backup server and gain administrative control of the computer.


Apply a patch from the vendor, see for details.


VERITAS Software has indicated that "in Backup Exec 9.x for Windows Servers, the issue can be avoided by disabling the Admin Plus Pack Option" but that this "does not alleviate the issue in Backup Exec 10.0 for Windows Servers."

Other mitigation strategies include the use of 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.

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.

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In their security bulletin VERITAS Software thanks the NGSSoftware research team for 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 Security Advisory.

Other Information

CVE IDs: None
Severity Metric: 7.59
Date Public: 2005-06-22
Date First Published: 2005-06-24
Date Last Updated: 2005-07-22 15:55 UTC
Document Revision: 26

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