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IBM DB2 rec2xml buffer overflow vulnerability (#NISR2122004J)
From: "NGSSoftware Insight Security Research" <nisr () nextgenss com>
Date: Thu, 23 Dec 2004 17:01:16 -0000

NGSSoftware Insight Security Research Advisory

Name: IBM DB2 rec2xml buffer overflow
Systems Affected: DB2 8.1/7.x   
Severity: High risk
Vendor URL: http://www.ibm.com/
Author: David Litchfield [ mark at ngssoftware.com ]
Relates to: http://www.nextgenss.com/advisories/db2-01.txt
Date of Public Advisory: 23rd December 2004
Advisory number: #NISR2122004J
Advisory URL: http://www.ngssoftware.com/advisories/db223122004K.txt

IBM's DB2 database server contains a function, rec2xml, used to format a
string in XML. This function suffers from a stack based buffer overflow

By passing an overly long 3rd parameter to the rec2xml function a stack
based buffer can be overflowed, overwriting the saved return address on the
stack. This allows an attacker to control the flow of execution and the
opportunity to execute arbitrary code.

Fix Information
IBM has written a patch and can be obtained with the latest fixpak.

http://www-306.ibm.com/software/data/db2/udb/support/downloadv8.html - DB2
http://www-306.ibm.com/software/data/db2/udb/support/downloadv7.html - DB2

NGSSQuirreL for DB2 (http://www.nextgenss.com/db2.htm) can be used to assess
whether your DB2 server is vulnerable to this.

About NGSSoftware
NGSSoftware design, research and develop intelligent, advanced application
security assessment scanners. Based in the United Kingdom, NGSSoftware have
offices in the South of London and the East Coast of Scotland. NGSSoftware's
sister company NGSConsulting, offers best of breed security consulting
services, specialising in application, host and network security


Telephone +44 208 401 0070
Fax +44 208 401 0076

enquiries () ngssoftware com

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