TippingPoint Zero Day Initiative

Symantec Veritas Storage Foundation Scheduler Service NULL Session Authentication Bypass Vulnerability

ZDI-08-053: August 14th, 2008


Affected Vendors

Affected Products

Vulnerability Details

This vulnerability allows an attacker to execute arbitrary code on vulnerable installations of Symantec Veritas Storage Foundation. User interaction is not required to exploit this vulnerability. Authentication is not required to exploit this vulnerability.

The specific flaw exists in the functionality exposed by the Storage Foundation for Windows Scheduler Service, VxSchedService.exe, which listens by default on TCP port 4888. The management console allows NULL NTLMSSP authentication thereby enabling a remote attacker to add, modify, or delete snapshots schedules and consequently run arbitrary code under the context of the SYSTEM user.

Vendor Response

Symantec has issued an update to correct this vulnerability. More details can be found at:

Disclosure Timeline

    2008-06-26 - Vulnerability reported to vendor
    2008-08-14 - Coordinated public release of advisory


This vulnerability was discovered by:
    Tenable Network Security