ZDI-10-184: IBM TSM FastBack Server USER_S_AddADGroup Remote Code Execution Vulnerability

Type securityvulns
Reporter Securityvulns
Modified 2010-10-05T00:00:00


ZDI-10-184: IBM TSM FastBack Server USER_S_AddADGroup Remote Code Execution Vulnerability http://www.zerodayinitiative.com/advisories/ZDI-10-184 September 29, 2010

-- CVSS: 10, (AV:N/AC:L/Au:N/C:C/I:C/A:C)

-- Affected Vendors: IBM

-- Affected Products: IBM Tivoli Storage Manager FastBack

-- TippingPoint(TM) IPS Customer Protection: TippingPoint IPS customers have been protected against this vulnerability by Digital Vaccine protection filter ID 9490. For further product information on the TippingPoint IPS, visit:


-- 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)

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