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Mozilla Browser Address Bar Spoofing Weakness

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Release Date:  2004-06-14    Last Update:  2004-08-20    Views:  42,997

Secunia Advisory SA11856

Where:

From remote

Impact:

Spoofing

Solution Status:

Vendor Patch

CVE Reference(s):

No CVE references.

Description


A weakness has been reported in Mozilla, allowing malicious people to conduct phishing attacks.

The weakness is caused due to an error within the handling of URLs. This can be exploited to potentially trick users into supplying sensitive information to a malicious web site, because information displayed in the address bar can be constructed in a certain way, which may lead users to believe that they're visiting another web site than the displayed web site.

Example:
http://[trusted_site]%2F%20%20%20.[malicious_site]/

Successful exploitation requires that a malicious web site's domain supports wildcard DNS and accepts invalid values in the "Host:" header.

The weakness has been confirmed in Mozilla 1.6 and 1.7rc3 for Windows and Firefox 0.8 and 0.9rc for Windows. Other versions may also be affected.


Solution:
Mozilla 1.7.2 is not affected by this vulnerability.

Provided and/or discovered by:
bitlance winter

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 Browser Address Bar Spoofing Weakness

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