Check Point Advisories

Symantec VERITAS NetBackup vnetd Buffer Overflow (CVE-2006-0991)

Vulnerability
Protection

Check Point Reference:	CPAI-2006-213
Date Published:	18 Nov 2009
Severity:	High
Last Updated:	Wednesday 18 November, 2009
Source:
Industry Reference:	CVE-2006-0991
Protection Provided by:	Security Gateway R81, R80, R77, R75
Who is Vulnerable?
Vulnerability Description	The Symantec VERITAS NetBackup server product suite is an enterprise backup system solution available for various platforms. It is capable of performing scheduled automatic backups as well as manual backups invoked by a client. A minimal backup environment consists of backup agents and a master backup server. The backup server serves as a single management tool that helps to consolidate all backup and recovery operations. There exists a buffer overflow vulnerability in the Symantec VERITAS NetBackup product line. The vulnerability is a result of the lack of boundary checks during the processing of certain messages to the vnetd service. An attacker may leverage this vulnerability to inject and execute arbitrary code on the target host with system level privileges. The affected process on the target host will be terminated after an unsuccessful attack attempt. Due to the fact that the process is spawned by a separate daemon process, the functionality of the server will not be affected by this occurrence. As such, subsequent connections to the affected port will still be accepted and processed. In a successful attack attempt, the attacker will be successful in diverting the flow of the process to injected code. This will result in attacker supplied code being executed within the security context of the affected process. The behaviour of the host system will be dependent on the intention of the malicious code. The spawning nature of the daemon, allows recurring attacks on a single target.

Protection Overview

This protection will detect and block attempts to exploit this vulnerability

In order for the protection to be activated, update your Security Gateway product to the latest IPS update. For information on how to update IPS, go to SBP-2006-05, click on Protection tab and select the version of your choice.

Security Gateway R80 / R77 / R75

In the IPS tab, click Protections and find the Symantec VERITAS NetBackup vnetd Buffer Overflow protection using the Search tool and Edit the protection's settings.
Install policy on all Security Gateways.

This protection's log will contain the following information:

Attack Name: Application Servers Protection Violation.
Attack Information: Symantec VERITAS NetBackup vnetd buffer overflow