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Team SHATTER Security Advisory

Multiple DoS in JAR files manipulation procedures

April 17th 2008

Risk Level:
High

Affected versions:
All versions of IBM DB2 Database Server on Windows platform.

Remote exploitable:
Yes (Authentication to Database Server is needed)

Credits:
These vulnerabilities were discovered and researched by Ariel Sanchez of
Application Security Inc.

Details:
DB2 has multiple vulnerabilities which can lead to Denial of Service
(DoS) attacks against the instance. When RECOVERJAR and REMOVE_JAR
procedures are called with a specially crafted parameter the DB2
instance crashes. Any DB2 database user can exploit these
vulnerabilities since PUBLIC permissions are granted to both procedures
by default. The RECOVERJAR and REMOVE_JAR procedures are installed by
default.

Impact:
Any remote authenticated attacker can crash the DB2 instance.

Vendor Status:
Vendor was contacted and a patch was released.

Fix:
To fix the problem apply the FP16(v8), FP4a(v9.1) and FP1(v9.5):
http://www-1.ibm.com/support/docview.wss?rs=71&uid=swg21256235
http://www-1.ibm.com/support/docview.wss?rs=71&uid=swg21255572
http://www-1.ibm.com/support/docview.wss?rs=71&uid=swg21287889

APAR:
IZ08945 - V8 FP16
IZ08512 - V9.1 FP4a
IZ15496 - V9.5 FP1

Timeline:
Vendor Notification - 9/11/2007
Vendor Response - 11/14/2007
Fix - 4/15/2008
Public Disclosure - 4/17/2008
- --

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Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct,
indirect, or consequential loss or damage arising from use of, or
reliance on, this information.


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