ISS Security Brief: Remote Buffer Overflow Vulnerability in Sun RPC

From: X-Force (xforce@iss.net)
Date: 07/31/02


Date: Wed, 31 Jul 2002 12:22:04 -0400 (EDT)
To: alert@iss.net
From: X-Force <xforce@iss.net>


TO UNSUBSCRIBE: email "unsubscribe alert" in the body of your message to
majordomo@iss.net Contact alert-owner@iss.net for help with any problems!
---------------------------------------------------------------------------

-----BEGIN PGP SIGNED MESSAGE-----

Internet Security Systems Security Brief
July 31, 2002

Remote Buffer Overflow Vulnerability in Sun RPC

Synopsis:

Internet Security Systems (ISS) X-Force has discovered a buffer overflow
in the xdr_array filter primitive. This function is a part of the Sun RPC
library, and it is used in multiple RPC services. Any native or third party
software that uses the xdr_array function may be vulnerable. Vulnerable RPC
services are installed and enabled by default on the affected software
versions.

Impact:

The buffer overflow vulnerability can allow remote attackers to execute
arbitrary commands on a target system with superuser privileges. Attackers
pose the most serious risk when attacking unprotected networks, or improperly
protected networks

Affected Versions:

Sun Microsystems Solaris 2.5.1
Sun Microsystems Solaris 2.6
Sun Microsystems Solaris 7
Sun Microsystems Solaris 8
Sun Microsystems Solaris 9

Note: The versions above were tested and found to be vulnerable. Additional
commercial and open-source Unix operating systems use implementations of Sun
RPC, and may also be vulnerable.

For the complete ISS X-Force Security Advisory, please visit:
http://bvlive01.iss.net/issEn/delivery/xforce/alertdetail.jsp?oid=20823
______

About Internet Security Systems (ISS)
Founded in 1994, Internet Security Systems (ISS) (Nasdaq: ISSX) is a
pioneer and world leader in software and services that protect critical
online resources from an ever-changing spectrum of threats and misuse.
Internet Security Systems is headquartered in Atlanta, GA, with
additional operations throughout the Americas, Asia, Australia, Europe
and the Middle East.

Copyright (c) 2002 Internet Security Systems, Inc. All rights reserved
worldwide.

Permission is hereby granted for the electronic redistribution of this
document. It is not to be edited or altered in any way without the
express written consent of the Internet Security Systems X-Force. If you
wish to reprint the whole or any part of this document in any other
medium excluding electronic media, please email xforce@iss.net for
permission.

Disclaimer: The information within this paper may change without notice.
Use of this information constitutes acceptance for use in an AS IS
condition. There are NO warranties, implied or otherwise, with regard to
this information or its use. Any use of this information is at the
user's risk. In no event shall the author/distributor (Internet Security
Systems X-Force) be held liable for any damages whatsoever arising out
of or in connection with the use or spread of this information.
X-Force PGP Key available on MIT's PGP key server and PGP.com's key server,
as well as at http://www.iss.net/security_center/sensitive.php
Please send suggestions, updates, and comments to: X-Force
xforce@iss.net of Internet Security Systems, Inc.

-----BEGIN PGP SIGNATURE-----
Version: 2.6.2

iQCVAwUBPUgOXzRfJiV99eG9AQG3NwQAqgUoyqctQpqzo6aZGXGVPFaSZtv5Qu85
kfPVlyJXL6crPQbelYtwAWolBI7qYGSE74lo4jRcpeI5lG/K8p39X66zHaZPAqZ7
fYZyEfIvJ3gCqtbowZSNUAvm1jdoFa0RVTwbuKmNPSGcDTebi+o7buWEG37HzdKO
YUEiRp8erpg=
=VTC/
-----END PGP SIGNATURE-----