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August 16, 2006
Symantec NetBackup PureDisk: Non-Privileged User Authentication Bypass Elevation of Privilege

Revision History

Medium (highly dependent on network configuration)

Authentication RequiredYes (to network)
Exploit publicly availableNo

Symantec discovered a security issue in Symantec's Veritas NetBackup 6.0 PureDisk Remote Office Edition. An unauthorized user with access to the network and the server hosting the management interface can potentially bypass the management interface authentication to gain access and elevate their privileges on the system.

Affected Products
Symantec Veritas NetBackup PureDisk Remote Office Edition (all platforms)6.0GA, MP1NB_PDE_60_MP1_P01

Note: For systems running NetBackup 6.0 GA PureDisk Remote Office Edition it will be necessary to install Maintenance Pack 1 (NB_PDE_60_MP1_283808) prior to applying this Security Pack (NB_PDE_60_MP1_P01). This issue ONLY affects the product and versions listed above.

An internal review revealed a potential elevation of privilege issue in the Symantec Veritas NetBackup PureDisk management interface. The management interface is accessible only through an SSL web connection by default. However it is possible for a non-privileged user with access to the network and the server hosting the Symantec Veritas NetBackup PureDisk management interface, to bypass the management interface authentication and further leverage their access to elevate privileged access on the server.

Symantec Response
Symantec engineers have addressed the issues identified above and made Security updates available.
Symantec strongly recommends all customers apply the latest security update to protect against threats of this nature.
Symantec knows of no exploitation of or adverse customer impact from these issues.

The patches listed above for affected products are available through the following location:
http://support.veritas.com/docs/284734 for Symantec Veritas NetBackup PureDisk Remote Office Edition.

Best Practices
As part of normal best practices, Symantec recommends:

  • Restrict access to administration or management systems to authorized privileged users only
  • Block remote access to all ports not essential for efficient operation
  • Restrict remote access, if required, to trusted/authorized systems only
  • Remove/disable unnecessary accounts or restrict access according to security policy as required
  • Run under the principle of least privilege where possible
  • Keep all operating systems and applications updated with the latest vendor patches
  • Follow a multi-layered approach to security. Run both firewall and antivirus applications, at a minimum, to provide multiple points of detection and protection to both inbound and outbound threats
  • Deploy network intrusion detection systems to monitor network traffic for signs of anomalous or suspicious activity. This may aid in detection of attacks or malicious activity related to exploitation of latest vulnerabilities

A CVE Candidate name is being requested from the Common Vulnerabilities and Exposures (CVE) initiative for this issue. This advisory will be revised accordingly upon receipt of the CVE Candidate name. This issue is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems.

Symantec takes the security and proper functionality of our products very seriously. As founding members of the Organization for Internet Safety (OISafety), Symantec supports and follows the principles of responsible disclosure. Symantec also subscribes to the vulnerability disclosure guidelines outlined by the National Infrastructure Advisory Council (NIAC).

Please contact secure@symantec.com if you feel you have discovered a security issue in a Symantec product. A Symantec Product Security team member will contact you regarding your submission. Symantec strongly recommends using encrypted email for reporting vulnerability information to secure@symantec.com. The Symantec Product Security PGP key can be found at the end of this message.

Symantec has developed a Product Vulnerability Response document outlining the process we follow in addressing suspected vulnerabilities in our products. This document is available below.

PDF Symantec Vulnerability Response Policy PGP Symantec Product Vulnerability Management PGP Key

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The information in the advisory is believed to be accurate at the time of publishing based on currently available information. Use of the information constitutes acceptance for use in an AS IS condition. There are no warranties with regard to this information. Neither the author nor the publisher accepts any liability for any direct, indirect, or consequential loss or damage arising from use of, or reliance on, this information.

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Initial Post on: Wednesday, 16-Aug-06 12:20:00
Last modified on: Wednesday, 16-Aug-06 12:23:14