From: Secunia Security Advisories (sec-advsecunia.com)
Date: Thu Jun 14 2007 - 10:17:05 CDT

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]

----------------------------------------------------------------------

Try a new way to discover vulnerabilities that ALREADY EXIST in your
IT infrastructure.

The Full Featured Secunia Network Software Inspector (NSI) is now
available:
http://secunia.com/network_software_inspector/

The Secunia NSI enables you to INSPECT, DISCOVER, and DOCUMENT
vulnerabilities in more than 4,000 different Windows applications.

----------------------------------------------------------------------

TITLE:
Microsoft Internet Explorer 7 HTTP Basic Authentication IDN Spoofing

SECUNIA ADVISORY ID:
SA25663

VERIFY ADVISORY:
http://secunia.com/advisories/25663/

CRITICAL:
Not critical

IMPACT:
Spoofing

WHERE:
From remote

SOFTWARE:
Microsoft Internet Explorer 7.x
http://secunia.com/product/12366/

DESCRIPTION:
A weakness has been discovered in Internet Explorer 7, which can be
exploited by malicious people to conduct spoofing attacks.

The problem is caused due to an unintended result of the IDN
(International Domain Name) implementation in the HTTP Basic
Authentication dialog. This can be exploited to spoof a server in the
authentication dialog using international characters in domain names
when a user visits a malicious web page.

The weakness is confirmed in Internet Explorer 7 on a fully patched
Windows XP. Other versions may also be affected.

SOLUTION:
Do not provide user credential to suspicious authentication dialogs.

PROVIDED AND/OR DISCOVERED BY:
Alex

ORIGINAL ADVISORY:
http://www.bitsploit.de/archives/428-Cross-Domain-Basic-Auth-Phishing-Tactics.html

OTHER REFERENCES:
http://ha.ckers.org/blog/20070608/cross-domain-basic-auth-phishing-tactics/

----------------------------------------------------------------------

About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/

Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

----------------------------------------------------------------------

Unsubscribe: Secunia Security Advisories

----------------------------------------------------------------------

• Messages sorted by: [ date ] [ thread ] [ subject ] [ author ]