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IBM DB2 UDB
Arbitrary file overwrite
in SYSPROC.NNSTAT
procedure
April 17th 2008
Risk Level:
High
Affected versions:
All versions of IBM DB2
Database Server.
Remote exploitable:
Yes (Authentication to
Database Server is
needed)
Credits:
This vulnerability was
discovered and
researched by Cesar
Cerrudo of Application
Security Inc.
Details:
NNSTAT procedure
retrieves currently
available statistics on
one or more nicknames.
By supplying an existing
file as a log file
parameter, arbitrary
files can be overwritten
on the system.
The
NNSTAT procedure is
installed by default.
Impact:
Any low privileged user
can exploit this
vulnerability to execute
arbitrary code.
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:
IZ06976 - V8 FP16
IZ06977 - V9.1 FP4a
IZ10776 - 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
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