December 19, 2003
It has been reported that the Internet Explorer patch supplied by Openwares.org for the Multiple Browser URI Display Obfuscation Weakness (BID 9182) may be prone to a buffer overflow condition that may allow an attacker to execute arbitrary code on a vulnerable system in order to gain unauthorized access. The condition is present due to insufficient boundary checking. The problem is reported to exist in the BeforeNavigateEvent() function of IETray.cpp module. This may also cause a denial of service condition in Internet Explorer.
Run all software as a nonprivileged user with minimal access rights.
Execute all client software with minimal privileges. This may limit consequences of a successful attack.
Implement multiple redundant layers of security.
Memory protection schemes and randomly mapped memory pages may protect against attacks.
Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: firstname.lastname@example.org <mailto:email@example.com>.
The disclosure of this issue has been credited to Heise Security.
Copyright © Symantec Corporation.
Permission to redistribute this alert electronically is granted as long as it is not edited in any way unless authorized by Symantec Security Response. Reprinting the whole or part of this alert in any medium other than electronically requires permission from firstname.lastname@example.org
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.
Symantec, Symantec products, Symantec Security Response, and email@example.com
are registered trademarks of Symantec Corp. and/or affiliated companies in the United States and other countries. All other registered and unregistered trademarks represented in this document are the sole property of their respective companies/owners.