Advisory Details

September 29th, 2010

IBM TSM FastBack Server _Eventlog Format String Remote Code Execution Vulnerability

CVE ID
CVSS SCORE	10.0, AV:N/AC:L/Au:N/C:C/I:C/A:C
AFFECTED VENDORS	IBM
AFFECTED PRODUCTS	Tivoli Storage Manager
TREND MICRO CUSTOMER PROTECTION	Trend Micro TippingPoint IPS customers are protected against this vulnerability by Digital Vaccine protection filter ID ['9965']. For further product information on the TippingPoint IPS: http://www.tippingpoint.com
VULNERABILITY DETAILS	This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of IBM Tivoli Storage Manager Fastback. Authentication is not required to exploit this vulnerability. The specific flaw exists within the FastBack server process (FastBackServer.exe) which listens by default on TCP port 11406. The process searches received packet data for a pipe character (0x7c) and then sends the remaining portion of the string to the event log without sanitization. By providing a specially crafted string with format specifiers this can be leveraged to trigger a format string vulnerability which can lead to arbitrary code execution in the context of the server process.
ADDITIONAL DETAILS	http://www.ibm.com/support/docview.wss?uid=swg21443820 Issue 2
DISCLOSURE TIMELINE	2010-01-06 - Vulnerability reported to vendor 2010-09-29 - Coordinated public release of advisory
CREDIT	Sebastian Apelt (www.siberas.de)

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