bugtraq - Secunia Research: Internet Explorer Suppressed "Download Dialog" Vulnerability

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Message-ID: <1134504031.25762.7.camel@ts2.intnet>
Date: Tue, 13 Dec 2005 21:00:31 +0100
From: Secunia Research <vuln@...unia.com>
To: vuln@...unia.com
Cc: bugtraq@...urityfocus.com
Subject: Secunia Research: Internet Explorer Suppressed "Download Dialog"
	Vulnerability

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                   Secunia Research 13/12/2005

   - Internet Explorer Suppressed "Download Dialog" Vulnerability -

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Table of Contents

Affected Software....................................................1
Severity.............................................................2
Description of Vulnerability.........................................3
Solution.............................................................4
Time Table...........................................................5
Credits..............................................................6
About Secunia........................................................7
Verification.........................................................8

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1) Affected Software

Microsoft Internet Explorer 6.0

Prior versions may also be affected.

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2) Severity

Rating: Highly critical
Impact: System Access
Where:  From remote

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3) Description of Vulnerability

Secunia Research has discovered a vulnerability in Internet Explorer,
which can be exploited by malicious people to trick users into
downloading and executing arbitrary programs on a user's system.

A design error in the processing of mouse clicks in new browser
windows and the predictability of the position of the "File Download"
dialog box can be exploited to trick the user into clicking on the
"Run" button of the dialog box. This is exploited by first causing a
"File Download" dialog box to be displayed underneath a new browser
window, and then tricking the user into double-clicking within a
specific area in the new window. This will result in an unintended
click of the "Run" button in the hidden "File Download" dialog box.

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4) Solution

Apply patches.

Please see MS05-054 (KB905915):
http://www.microsoft.com/technet/security/Bulletin/MS05-054.mspx

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5) Time Table

26/06/2005 - Vulnerability discovered and reported to vendor.
13/12/2005 - Public disclosure.

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6) Credits

Discovered by Jakob Balle, Secunia Research.

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7) About Secunia

Secunia collects, validates, assesses, and writes advisories regarding
all the latest software vulnerabilities disclosed to the public. These
advisories are gathered in a publicly available database at the
Secunia web site:

http://secunia.com/

Secunia offers services to our customers enabling them to receive all
relevant vulnerability information to their specific system
configuration.

Secunia offers a FREE mailing list called Secunia Security Advisories:

http://secunia.com/secunia_security_advisories/

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8) Verification

Please verify this advisory by visiting the Secunia web site:
http://secunia.com/secunia_research/2005-21/advisory/

Complete list of vulnerability reports released by Secunia Research:
http://secunia.com/secunia_research/

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