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Insecure Library Loading
Not critical

Firefox "OnKeyDown" Event Focus Weakness

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Release Date:  2007-07-02    Last Update:  2007-10-19    Views:  25,543

Secunia Advisory SA25904

Where:

From remote

Impact:

Exposure of sensitive information

Solution Status:

Vendor Patch

CVE Reference(s):

Description


A weakness has been discovered in Firefox, which potentially can be exploited by malicious people to disclose sensitive information.

The weakness is caused due to a design error within the focus handling of form fields and can potentially be exploited by changing the focus from a "textarea" field to a "file upload" form field via the "OnKeyDown" event.

Successful exploitation allows an arbitrary file on the user's system to be uploaded to a malicious web site, but requires that the user is tricked into typing the file name into a "textarea" input form.

The weakness is confirmed in version 2.0.0.4. Other versions may also be affected.


Solution:
Update to version 2.0.0.8.

Provided and/or discovered by:
Hong

Original Advisory:
Mozilla Foundation:
http://www.mozilla.org/security/announce/2007/mfsa2007-32.html

http://sla.ckers.org/forum/read.php?3,13142
http://archives.neohapsis.com/archives/fulldisclosure/2007-06/0646.html

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: Firefox "OnKeyDown" Event Focus Weakness

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