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Insecure Library Loading
Not critical

Mozilla Status Bar Manipulation Weakness

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Release Date:  2003-12-12    Last Update:  2005-02-15    Views:  27,734

Secunia Advisory SA10419

Where:

From remote

Impact:

Security Bypass, Spoofing

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A weakness has been identified in Mozilla, which can be exploited by malicious people to manipulate information displayed in the status bar.

It is possible to manipulate information displayed in the status bar by including the URL encoded representation "%00" in a link. Since this can be done without using any script code, disabling the script setting "Change status bar text" will not prevent this.

This can be exploited to trick users, who have disabled script manipulation of the status bar and therefore trust information displayed in it.

A test is available at:
http://secunia.com/internet_explorer_address_bar_spoofing_test/

The weakness has been confirmed in Mozilla 1.0.2 for Linux and 1.5 for Windows. Other versions may also be affected.

NOTE: This issue is not the same as the Internet Explorer URL (Address Bar) Spoofing Vulnerability:
SA10395


Solution:
The issue has been fixed in the 1.6 branch and the forthcoming version 1.4.2.

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: Mozilla Status Bar Manipulation Weakness

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