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Internet Explorer File Download Extension Spoofing
Secunia Advisory: SA10736
Release Date: 2004-01-28
Last Update: 2004-08-20
Popularity: 137,648 views

Critical:
Moderately critical
Impact: Security Bypass
Where: From remote
Solution Status: Vendor Patch

Software:Microsoft Internet Explorer 6.x

Secunia CVSS-2 Score: Available in Secunia business solutions

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Advisory Content (Page 1 of 3)[ 1 ] [ 2 ] [ 3 ]

Description:
http-equiv has identified a vulnerability in Internet Explorer, allowing malicious web sites to spoof the file extension of downloadable files.

The problem is that Internet Explorer can be tricked into opening a file, with a different application than indicated by the file extension. This can be done by embedding a CLSID in the file name. This could be exploited to trick users into opening "trusted" file types which are in fact malicious files.

Secunia has created an online test:
http://secunia.com/Internet_Explorer_File_Download_Extension_Spoofing_Test/

This has been reported to affect Microsoft Internet Explorer 6.

NOTE: Prior versions may also be affected.

Change Page:
[ 1 ] [ 2 ] [ 3 ]



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