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Oracle Database
Buffer Overflow in
Oracle
SYS.KUPF$FILE_INT.GET_FULL_FILENAME
(DB11)
April 28, 2008
Risk Level:
Medium
Affected versions:
Oracle Database Server
versions 10gR1, 10gR2
and 11gR1
Remote exploitable:
Yes (Authentication to
Database Server is
needed)
Credits:
This vulnerability was
discovered and
researched by Esteban
Martínez Fayó of Application
Security Inc.
Details:
Oracle Database Server
provides the
SYS.KUPF$FILE_INT
package. This package
contains the procedure
GET_FULL_FILENAME which
is vulnerable to buffer
overflow attacks.
Impact:
Any Oracle database user
with EXECUTE privilege
on the package
SYS.KUPF$FILE_INT can
exploit this
vulnerability. By
default, users granted
EXECUTE_CATALOG_ROLE
have the required
privilege. Exploitation
of this vulnerability
allows an attacker to
execute arbitrary code.
It can also be exploited
to cause DoS (Denial of
service) killing the
Oracle server process.
Vendor Status:
Vendor was contacted and
a patch was released.
Workaround:
Restrict access to the
SYS.KUPF$FILE_INT
package.
Fix:
Apply Oracle Critical
Patch Update April 2008
available at Oracle
Metalink.
Links:
http://www.oracle.com/technology/deploy/security/critical-patch-updates/cpuapr2008.html
Timeline:
Vendor Notification -
8/24/2007
Vendor Response -
8/29/2007
Fix - 4/15/2008
Public Disclosure -
4/28/2008
Application Security,
Inc's database security
solutions have helped
over 1000
organizations secure
their databases from all
internal and external
threats while also ensuring that
those organizations meet
or exceed regulatory
compliance
and audit requirements.
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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