ZDI-10-180: IBM TSM FastBack Server _SendToLog Remote Code- Execution Vulnerability

From: ZDI Disclosures <zdi-disclosures@tippingpoint.com>
To: Full Disclosure (full-disclosure@lists.grok.org.uk) <full-disclosure@lists.grok.org.uk>,Bugtraq (bugtraq@securityfocus.com) <bugtraq@securityfocus.com>
Subject: ZDI-10-180: IBM TSM FastBack Server _SendToLog Remote Code- Execution Vulnerability

ZDI-10-180: IBM TSM FastBack Server _SendToLog Remote Code Execution Vulnerability
September 29, 2010

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

-- Affected Vendors:

-- 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 9706. 
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 11406. The issue is due to an unsafe copy to a
buffer located on the stack. This buffer is used to build a formatted
event log message for the AGI_SendToLog method. Successful exploitation
leads to remote code execution under the context of the fastback server.

-- Vendor Response:
IBM states:
Issue 2

-- Disclosure Timeline:
2010-01-22 - 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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