TippingPoint Zero Day Initiative

CA BrightStor ARCserve Backup Tape Engine Code Execution Vulnerability

ZDI-07-002: January 11th, 2007


Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 4849,4882. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows attackers to execute arbitrary code on vulnerable installations of Computer Associates BrightStor ARCserve Backup. User interaction is not required to exploit this vulnerability.

The specific flaw exists in the handling of RPC requests to the Tape Engine service which listens by default on TCP port 6502 with the following UUID:


The handler function for RPC opnum 0xBF directly calls user-supplied data in the RPC request, resulting in trivial arbitrary code execution.

Vendor Response

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

Disclosure Timeline

    2006-11-01 - Vulnerability reported to vendor
    2007-01-11 - Coordinated public release of advisory


This vulnerability was discovered by:
    LSsecurity - LSsec.com