exploit the possibilities

Technical Cyber Security Alert 2004-163A

Technical Cyber Security Alert 2004-163A
Posted Jun 14, 2004
Authored by US-CERT | Site us-cert.gov

Technical Cyber Security Alert TA04-163A - There is a cross-domain vulnerability in the way Microsoft Internet Explorer determines the security zone of a browser frame that is opened in one domain then redirected by a web server to a different domain.

tags | advisory, web
advisories | CVE-2004-0549
MD5 | 863aa8ed338738125c76110936385e7e

Technical Cyber Security Alert 2004-163A

Change Mirror Download

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1


Technical Cyber Security Alert TA04-163A

Cross-Domain Redirect Vulnerability in Internet Explorer

Original release date: June 11, 2004
Last revised: --
Source: US-CERT


Systems Affected

Microsoft Windows systems


Overview

A cross-domain vulnerability in Internet Explorer (IE) could allow an
attacker to execute arbitrary code with the privileges of the user
running IE.


I. Description

There is a cross-domain vulnerability in the way IE determines the
security zone of a browser frame that is opened in one domain then
redirected by a web server to a different domain. A complex set of
conditions is involved, including a delayed HTTP response (3xx status
code) to change the content of the frame to the new domain.
Vulnerability Note VU#713878 describes this vulnerability in more
technical detail and will be updated as further information becomes
available.

Other programs that host the WebBrowser ActiveX control or use the
MSHTML rendering engine, such as Outlook and Outlook Express, may also
be affected.

This issue has been assigned CVE CAN-2004-0549.


II. Impact

By convincing a victim to view an HTML document (web page, HTML
email), an attacker could execute script in a different security
domain than the one containing the attacker's document. By causing
script to be run in the Local Machine Zone, the attacker could execute
arbitrary code with the privileges of the user running IE.

Publicly available exploit code exists for this vulnerability, and
US-CERT has monitored incident reports that indicate that this
vulnerability is being actively exploited.


III. Solution

Until a complete solution is available from Microsoft, consider the
following workarounds.

Disable Active scripting and ActiveX controls

Disabling Active scripting and ActiveX controls in the Internet Zone
(or any zone used by an attacker) appears to prevent exploitation of
this vulnerability. Disabling Active scripting and ActiveX controls in
the Local Machine Zone will prevent widely used payload delivery
techniques from functioning. Instructions for disabling Active
scripting in the Internet Zone can be found in the Malicious Web
Scripts FAQ. See Microsoft Knowledge Base Article 833633 for
information about securing the Local Machine Zone. Also, Service Pack
2 for Windows XP (currently at RC1) includes these and other security
enhancements for IE.

Do not follow unsolicited links

Do not click on unsolicited URLs received in email, instant messages,
web forums, or internet relay chat (IRC) channels. While this is
generally good security practice, following this behavior will not
prevent exploitation of this vulnerability in all cases.

Maintain updated anti-virus software

Anti-virus software with updated virus definitions may identify and
prevent some exploit attempts. Variations of exploits or attack
vectors may not be detected. Do not rely solely on anti-virus software
to defend against this vulnerability. More information about viruses
and anti-virus vendors is available on the US-CERT Computer Virus
Resources page.


Appendix B. References

* Vulnerability Note VU#713878-
<http://www.kb.cert.org/vuls/id/713878>

* Malicious Web Scripts FAQ -
<http://www.cert.org/tech_tips/malicious_code_FAQ.html#steps>

* Computer Virus Resources -
<http://www.us-cert.gov/other_sources/viruses.html>

* CVE CAN-2004-0549 -
<http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0549>

* Microsoft Knowledge Base Article 833633 -
<http://support.microsoft.com/default.aspx?scid=833633>

* Windows XP Service Pack 2 RC1 -
<http://www.microsoft.com/technet/prodtechnol/winxppro/maintain/wi
nxpsp2.mspx>

* Increase Your Browsing and E-Mail Safety -
<http://www.microsoft.com/security/incident/settings.mspx>

* Working with Internet Explorer 6 Security Settings -
<http://www.microsoft.com/windows/ie/using/howto/security/settings
.mspx>

_________________________________________________________________


Public incidents related to this vulnerability were reported by Rafel
Ivgi. Thanks to Jelmer for further research and analysis.

_________________________________________________________________


Feedback can be directed to the author: Art Manion.

Send mail to <mailto:cert@cert.org>.

Please include the Subject line "TA04-163A Feedback VU#713878".

_________________________________________________________________


Copyright 2004 Carnegie Mellon University.

Terms of use: <http://www.us-cert.gov/legal.html>

_________________________________________________________________

The most recent version of this document can be found at:

<http://www.us-cert.gov/cas/techalerts/TA04-163A.html>

_________________________________________________________________


Revision History

June 11, 2004: Initial release

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.1 (GNU/Linux)

iD8DBQFAyhdcXlvNRxAkFWARAt2eAKCRDeqWLNgG+xXJtd0PyRGeN+S69ACfcXoi
GDMew8rDUjleel9OLMqs9W4=
=ZAyn
-----END PGP SIGNATURE-----

Comments

RSS Feed Subscribe to this comment feed

No comments yet, be the first!

Login or Register to post a comment

File Archive:

April 2020

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Apr 1st
    60 Files
  • 2
    Apr 2nd
    20 Files
  • 3
    Apr 3rd
    10 Files
  • 4
    Apr 4th
    0 Files
  • 5
    Apr 5th
    0 Files
  • 6
    Apr 6th
    0 Files
  • 7
    Apr 7th
    0 Files
  • 8
    Apr 8th
    0 Files
  • 9
    Apr 9th
    0 Files
  • 10
    Apr 10th
    0 Files
  • 11
    Apr 11th
    0 Files
  • 12
    Apr 12th
    0 Files
  • 13
    Apr 13th
    0 Files
  • 14
    Apr 14th
    0 Files
  • 15
    Apr 15th
    0 Files
  • 16
    Apr 16th
    0 Files
  • 17
    Apr 17th
    0 Files
  • 18
    Apr 18th
    0 Files
  • 19
    Apr 19th
    0 Files
  • 20
    Apr 20th
    0 Files
  • 21
    Apr 21st
    0 Files
  • 22
    Apr 22nd
    0 Files
  • 23
    Apr 23rd
    0 Files
  • 24
    Apr 24th
    0 Files
  • 25
    Apr 25th
    0 Files
  • 26
    Apr 26th
    0 Files
  • 27
    Apr 27th
    0 Files
  • 28
    Apr 28th
    0 Files
  • 29
    Apr 29th
    0 Files
  • 30
    Apr 30th
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2016 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close