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Next Generation Security Advisory 205012005E

Next Generation Security Advisory 205012005E
Posted Jan 6, 2005
Authored by David Litchfield, NGSSoftware | Site nextgenss.com

NGSSoftware Insight Security Research Advisory #NISR05012005E - IBM's DB2 database server, when configured for Satellite Administration includes a number of SQL functions. One of these, the SATENCRYPT function, suffers from a stack based buffer overflow vulnerability. Systems Affected: DB2 8.1.

tags | advisory, overflow
SHA-256 | 7d386e3e0437c1c85d6802b327e3efb8a9fa4ca901feee75516c9820b611581d

Next Generation Security Advisory 205012005E

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NGSSoftware Insight Security Research Advisory

Name: IBM DB2 SATADMIN.SATENCRYPT buffer overflow
Systems Affected: DB2 8.1
Severity: Medium risk from remote
Vendor URL: http://www.ibm.com/
Author: David Litchfield [ david at ngssoftware.com ]
Relates to: http://www.nextgenss.com/advisories/db2-02.txt
Date of Public Advisory: 5th January 2005
Advisory number: #NISR05012005E
Advisory URL: http://www.ngssoftware.com/advisories/db205012005E.txt

Description
***********
IBM's DB2 database server, when configured for Satellite Administration
includes a number of SQL functions. One of these, the SATENCRYPT function
suffers from a stack based buffer overflow vulnerability.

Details
*******
The SATENCRYPT function in the SATADMIN schema is vulnerable to a classic
stack based overflow. The satencrypt function is exported by db2prom.dll and
one of it's subfunctions creates a 40 byte buffer. User supplied data is
copied to the buffer until a null terminator is reached in a while loop. By
passing a parameter longer than 40 bytes allows the attacker to overflow the
buffer and overwrite the saved return address. By exploiting this an
attacker can gain elevated privileges.

Note - by default, public cannot execute this function.


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
v8.1
http://www-306.ibm.com/software/data/db2/udb/support/downloadv7.html - DB2
v7.x

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
assessments.

http://www.ngssoftware.com/

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

enquiries@ngssoftware.com

















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