Secunia Advisory SA10760

Opera Browser File Download Extension Spoofing
Secunia Advisory SA10760
Release Date 2004-02-11
Last Update 2005-08-11
   
Popularity 50,093 views
Comments 0 comments

Criticality level Moderately criticalModerately critical
Impact Security Bypass
Where From remote
Authentication level Available in Customer Area
   
Report reliability Available in Customer Area
Solution Status Vendor Patch
   
Systems affected Available in Customer Area
Approve distribution Available in Customer Area
Remediation status Secunia CSI, Secunia PSI
Automated scanning Secunia CSI, Secunia PSI
   
Software:
Opera 7.x

Secunia CVSS Score Available in Customer Area
CVE Reference(s) CVE-2004-2083 CVSS available in Customer Area
  

Description
A vulnerability has been discovered in Opera, which can be exploited by malicious web sites to spoof the file extension of downloadable files.

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

A demonstration of the vulnerability can be found here:
http://secunia.com/Internet_Explorer_File_Download_Extension_Spoofing_Test/

Solution
Update to version 7.50 or later.
Changelog
Further details available in Customer Area

Deep Links
Links available in Customer Area


Do you have additional information related to this advisory?
Please provide information about patches, mitigating factors, new versions, exploits, faulty patches, links, and other relevant data by posting comments to this Advisory. You can also send this information to vuln@secunia.com
Subject: Opera Browser File Download Extension Spoofing
 
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