Hi,
Please check this ....
Thanks
Muthu
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CERT Advisory CA-2001-16 Oracle 8i contains buffer overflow in TNS listener
Original release date: July 03, 2001
Last revised: --
Source: CERT/CC
A complete revision history is at the end of this file.
Systems Affected
* Systems running Oracle 8i
Overview
A vulnerability in Oracle 8i allows remote intruders to assume
control of database servers running on victim machines. If the Oracle server
is running on a Windows system, an intruder may also be able to gain control
of the underlying operating system.
I. Description
The COVERT labs at PGP Security have discovered a buffer overflow
vulnerability in Oracle 8i that allows intruders to execute arbitrary code
with the privileges of the TNS listener process. The vulnerability occurs in
a section of code that is executed prior to authentication, so an intruder
does not require a username or password.
For more information, see the COVERT Labs Security Advisory,
available
at
http://www.pgp.com/research/covert/advisories/050.asp
II. Impact
An intruder who exploits the vulnerability can remotely execute
arbitrary code. On UNIX systems, this code runs as the 'oracle' user. If
running on Windows systems, the intruder's code will run in the Local System
security context.
In either case, the attacker can gain control of the database server
on the victim machine. On Windows systems, the intruder can also gain
administrative control of the operating system.
III. Solutions
Install a patch from Oracle. More information is available in
Appendix A.
Appendix A
Oracle
Oracle has issued an alert for this vulnerability at
http://otn.oracle.com/deploy/security/pdf/nai_net8_bof.pdf
Oracle has fixed this potential security vulnerability in the
Oracle9i database server. Oracle is in the process of backporting the fix to
supported Oracle8i database server Releases 8.1.7 and 8.1.6 and Oracle8
Release 8.0.6 on all platforms. The Oracle bug number for the patch is
1489683.
Download the patch for your platform from Oracle's Worldwide Support
web site, Metalink:
http://metalink.oracle.com
Please check Metalink periodically for patch availability if the
patch for your platform is not yet available.
_________________________________________________________________
Our thanks to COVERT Labs at PGP Security for the information
contained in their advisory.
_________________________________________________________________
This document was written by Shawn V. Hernan. If you have feedback
concerning this document, please send email to:
mailto:[EMAIL PROTECTED]?Subject=[VU#620495]%20Feedback%20CA-2001-16
--
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--
Author: Muthu Avudaiyappan
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