[Full-disclosure] ZDI-10-183: IBM TSM FastBack Server FXCLI_checkIndexDBLocation Remote Code Execution Vulnerability



ZDI-10-183: IBM TSM FastBack Server FXCLI_checkIndexDBLocation Remote Code Execution Vulnerability
http://www.zerodayinitiative.com/advisories/ZDI-10-183
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 9489.
For further product information on the TippingPoint IPS, visit:

http://www.tippingpoint.com

-- 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 flaw exists within FastBackServer.exe which listens by default on
TCP port 11460. The issue is due to a strcpy of user supplied data and
length to a fixed size buffer located on the stack. Specifically, this
issue can be triggered by providing a large enough user_path variable.
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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