Symantec Veritas NetBackup bpcd.exe CONNECT_OPTIONS buffer overflow

Overview

Symantec Veritas NetBackup contains a buffer overflow vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code on a vulnerable system.

Description

Symantec VERITAS NetBackup is a client/server based backup software solution. The NetBackup bpcd daemon is vulnerable to a buffer overflow when handling CONNECT_OPTIONS requests to a NetBackup Master/Media Server. The bpcd daemon listens on 13782/tcp.

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Impact

A remote, unauthenticated attacker may be able to execute arbitrary code on a vulnerable system with the privileges of the bpcd daemon.

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Solution

Apply an update

Symantec has released patches to correct this issue in Symantec Security Advisory SYM06-024. The updated versions are NetBackup Enterprise Server/NetBackup Server; Server and client and Storage Migrator versions 6.0_MP4, 5.1_MP6, and 5.0_MP7.

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Restrict access

You may wish to block access to the vulnerable software from outside your network perimeter, specifically by blocking access to the ports used by NetBackup Catalog daemon (typically 13721/tcp). This will limit your exposure to attacks. However, blocking at the network perimeter would still allow attackers within the perimeter of your network to exploit the vulnerability. The use of host-based firewalls in addition to network-based firewalls can help restrict access to specific hosts within the network. It is important to understand your network’s configuration and service requirements before deciding what changes are appropriate.

Implement NetBackup Access Control (NBAC) on NetBackup Servers and Clients

According to Symantec Security Advisory SYM06-024:
_NBAC provides host-based authentication and user-level authorization through Veritas Security Services (VxSS) at both the server and the client to ensure communications are with a trusted host. _

Note: even if patching can be done quickly, the above workaround measures should be considered as part of a defense-in-depth strategy for protecting your systems.

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Vendor Information

650432

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Updated: December 15, 2006

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

Please see Symantec Security Advisory SYM06-024.

If you have feedback, comments, or additional information about this vulnerability, please send us [email](<mailto:[email protected]?Subject=VU%23650432 Feedback>).

CVSS Metrics

Group	Score	Vector
Base
Temporal
Environmental

References

• <http://seer.support.veritas.com/docs/285082.htm&gt;
• [ http://www.symantec.com/avcenter/security/Content/2006.12.13a.html ](<  http://www.symantec.com/avcenter/security/Content/2006.12.13a.html >)
• <http://www.zerodayinitiative.com/advisories/ZDI-06-050.html&gt;
• <http://secunia.com/advisories/23368/&gt;

Acknowledgements

This vulnerability was reported by TippingPoint ZDI, who in turn credit Sebastian Apelt.

This document was written by Will Dormann.

Other Information

CVE IDs:	CVE-2006-5822
Severity Metric:	11.25 Date Public: