IBM Corp.'s DB2 Universal Database product is a large database server product commonly used for high end databases. The DB2 Administration Server (DAS) provides functionality that implements the Java-based DB2 Control Center GUI. For more information, visit IBM's DB2 product site at the following URL.
Remote exploitation of a memory corruption vulnerability within version 9.1 of IBM Corp.'s DB2 Universal Database Administration Server (DAS) allows attackers to crash the service or potentially execute arbitrary code in the context of the affected service.
When handling certain remote administration requests, the Administration Server uses a 32-bit pointer value supplied by the remote client. By supplying carefully chosen address values, an attacker can cause memory corruption or force the program to access invalid memory locations.
Exploitation allows attackers to crash the service or execute arbitrary code within the context of the affected service. No authentication credentials are required. The attacker only needs the ability to establish a TCP session with the DAS on TCP port 523.
By default this service runs as "dasusr1" on Linux and "db2admin" on Windows. In the Linux version of the DAS, the process is monitored by a fault monitoring process and will restart automatically after a few seconds. This monitoring process does not exist in the Windows version.
iDefense has confirmed the existence of this vulnerability in the DAS (db2dassrm) as included with DB2 9.1 with Fix Pack 2 for both Linux and Windows platforms. Previous versions, as well as builds for other platforms, are suspected to be vulnerable.
Employing firewalls to limit access to the affected service will mitigate exposure to this vulnerability.
IBM Corp. has addressed these vulnerabilities by releasing V9 Fix Pack 4 and V8 FixPak 16 of its Universal Database product. More information can be found at the following URLs.
The Common Vulnerabilities and Exposures (CVE) project has assigned the name CVE-2007-3676 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org/), which standardizes names for security problems.
06/18/2007 Initial vendor notification
06/20/2007 Initial vendor response
08/14/2007 V8 Fix Pack 15 made available
08/15/2007 V9 Fix Pack 3 made available
10/10/2007 V9 Fix Pack 3a made available
11/13/2007 V9 Fix Pack 4 made available
01/28/2008 V8 Fix Pack 16 made available
02/05/2008 V8 Fix Pack 16 fix list made available
02/07/2008 Public disclosure
The discoverer of this vulnerability wishes to remain anonymous.
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