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Insecure Library Loading

Secunia Advisory SA12028

Opera Browser Address Bar Spoofing Vulnerability
Secunia Advisory SA12028
Secunia VIM 4.0 - Free Trial
Release Date 2004-07-08
Last Update 2004-07-20
   
Popularity 53,782 views
Comments 0 comments

Criticality level Moderately criticalModerately critical
Impact Spoofing
Where From remote
Authentication level This information is available to Secunia VIM customers
   
Report reliability This information is available to Secunia VIM customers
Solution Status Vendor Patch
   
Systems affected This information is available to Secunia VIM customers
Approve distribution This information is available to Secunia VIM customers
Remediation status Secunia CSI, Secunia PSI
Automated scanning Secunia CSI, Secunia PSI
   
Software:
Opera 5.x
Opera 6.x
Opera 7.x
Secunia CVSS Score This information is available to Secunia VIM Customers
CVE Reference(s) No CVE references.
  

Description

bitlance winter has discovered a vulnerability in the Opera browser, which potentially can be exploited by malicious people to conduct phishing attacks against a user.

The problem is that information in the address bar is changed before properly loading a page. This can e.g. be exploited via a specially crafted HTML document, which does the following:

1) Loads an HTML document with an "unOnload" event handler in the <BODY> tag, which is set to cause an infinite loop when the page is left.
2) Displays an arbitrary (potentially malicious) website in an inline frame ("<iframe>"), which at the same time sets an "onLoad" event handler to visit an arbitrary (potentially trusted) website.

Successful exploitation causes the browser to never load the new, and potentially trusted, website but still show its URI in the address bar.

The vulnerability has been confirmed in version 7.52 for Windows. Other versions and platforms may also be affected.

This is a variant of the following issues:
SA11901
SA11532

NOTE: A PoC (Proof of Concept) exploit is available.


Solution
This vulnerability has been eliminated in version 7.53.
Further details available to Secunia VIM customers

Provided and/or discovered by
bitlance winter

Changelog
Further details available to Secunia VIM customers

Original Advisory
http://www.opera.com/windows/changelogs/753/

Other references
Further details available to Secunia VIM customers

Deep Links
Links available to Secunia VIM customers


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 Address Bar Spoofing Vulnerability
 
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