VERITAS Backup Exec remote registry access validation vulnerability

Overview

VERITAS Backup Exec contains a remote registry access validation vulnerability.

Description

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:

http://www.idefense.com/application/poi/display?id=269&type=vulnerabilities.
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 <http://seer.support.veritas.com/docs/276605.htm&gt;.
Information on the other vulnerabilities along with patch details can be found at:

<http://seer.support.veritas.com/docs/277428.htm&gt;.
Note that this vulnerability is reintroduced in Backup Exec 9.1 for Windows by applying Hotfix 51 or Service Pack 3:

<http://support.veritas.com/docs/276605&gt;.

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Impact

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

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Solution

Apply a patch from the vendor. See <http://seer.support.veritas.com/docs/276605.htm&gt; for details.

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Workaround

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).

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Vendor Information

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Veritas SOFTWARE __ Affected

Updated: June 24, 2005

Status

Affected

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.

Addendum

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

<http://seer.support.veritas.com/docs/276605.htm&gt;

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23584505 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://www.us-cert.gov/cas/techalerts/TA05-180A.html&gt;
• <http://seer.support.veritas.com/docs/276605.htm&gt;
• <http://seer.support.veritas.com/docs/279216.htm&gt;
• <http://seer.support.veritas.com/docs/277428.htm&gt;
• <http://seer.support.veritas.com/docs/279308.htm&gt;
• http://www.idefense.com/application/poi/display?id=269&type=vulnerabilities
• <http://securitytracker.com/alerts/2005/Jun/1014273.html&gt;

Acknowledgements

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: