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September 19, 2005
VERITAS Storage Exec DCOM Server Buffer Overflows

Revision History
Revision 1 - 9/23/2005, CVE Candidate CAN-2005-2996 assigned to this issue.

Risk Impact

Remote AccessYes, highly dependent on user involvement
Local AccessYes
Authentication RequiredNo, runs with authenticated user permissions
Exploit publicly availableNo

Multiple VERITAS Storage Exec DCOM server components have been identified as susceptible to buffer overflows through calls to associated ActiveX controls. If properly exploited, this vulnerability could allow execution of remotely downloaded code on the system with privileges of the logged on user. Exploitation may result in a system crash, or potentially lead to access to the local system with privileges of the authenticated user.

Successful exploitation is highly dependent on user involvement for malicious code to gain initial access to the system.

Affected Supported Products

Storage Exec5.3rev. 2190RHotfix 9
StorageCentral5.2rev. 322Hotfix Q323003.ism Hot Fix 2

Legacy versions may also be affected.

Customers running earlier legacy versions should upgrade to the latest version indicated above and apply all current hotfixes.

NGS Research identified multiple DCOM servers in VERITAS Storage Exec that are susceptible to stack and heap overflows as they fail to properly validate/parse external input. The buffer overflows in the DCOM servers can be successfully initiated by calls to associated ActiveX controls. To successfully launch this type of attack, the authenticated user would have had to either visit a hostile web site or be enticed to visit a hostile location where the malicious code could be successfully executed or downloaded to the local system. Or, the user would need to download an html email containing malicious code that could be successfully run on the system.

Exploiting this issue could result in a system crash or, if successful, could potentially result in access to the local system with authenticated user privileges.

Symantec Response
Symantec engineers have verified these issues and made security upgrades available for VERITAS Storage Exec 5.3 and StorageCentral 5.2. Symantec recommends customers immediately apply the latest hotfix update for their supported product versions to protect against these types of threats.

In a normal network deployment, VERITAS Storage Exec or Storage Central would be restricted to administrative positions, which would reduce target availability.

Product specific fixes are available from the following Support locations

VERITAS Storage Exec 5.3 rev 2190R - Hotfix 9

VERITAS StorageCentral 5.2 rev 322 - Hotfix Q323003.ism Hot Fix 2

Symantec is not aware of any exploit of or adverse customer impact from these issues.

As normal best practices, Symantec strongly recommends:

  • Restricting access to administration or management systems to privileged users only with additional restricted access to the physical host system(s) if possible.
  • Running under the principle of least privilege where possible to limit the impact of exploit by threats such as this.
  • Keeping all operating systems and applications updated with the latest vendor patches.
  • Following 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.
  • Being cautious of mysterious attachments and executables delivered via email and cautious of visiting unknown/untrusted websites or executing unknown URL links.
  • Not opening unidentified attachments or executables from unknown sources or that you didn't request or were unaware of. Always err on the side of caution. Even if the sender is known, the source address may be spoofed.
  • If in doubt, contact the sender to confirm they sent it and why before opening the attachment. If still in doubt, delete the attachment without opening it.

The Common Vulnerabilities and Exposures (CVE) initiative has assigned CVE Candidate CAN-2005-2996 to this issue. This issue is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems.

Symantec would like to thank NGS Research’s Mark Litchfield, for identifying and reporting this issue and providing coordination while Symantec resolved the issue.

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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Initial Post on: Monday, 19-Sep-05 14:25:00
Last modified on: Friday, 23-Sep-2005 10:43:29 PDT
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