TippingPoint Zero Day Initiative
 

IBM TSM FastBack Server USER_S_AddADGroup Remote Code Execution Vulnerability

ZDI-10-184: September 29th, 2010

CVSS Score

Affected Vendors

Affected Products

TippingPoint™ IPS Customer Protection

TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID 9490. For further product information on the TippingPoint IPS:

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of IBM Tivoli FastBack Server. Authentication is not required to exploit this vulnerability.

The specific flaw exists within FastBackServer.exe which listens by default on TCP port 11460. The issue is due to a strcat of user supplied data to a fixed length buffer located on the stack. By providing sufficiently large values for a group, workgroup, or domain name this buffer can be overflowed. Successful exploitation leads to remote code execution under the context of the fastback server.

Vendor Response

IBM states:

http://www.ibm.com/support/docview.wss?uid=swg21443820
Issue 2


Disclosure Timeline

    2010-02-02 - Vulnerability reported to vendor
    2010-09-29 - Coordinated public release of advisory

Credit

This vulnerability was discovered by:
    Sebastian Apelt (www.siberas.de)