290478 - malicious webpage can filter keyboard strokes and specify a file for uploading from client

Status: VERIFIED DUPLICATE of bug 56236

(Core :: DOM: Events, defect)

Description

[Chuck McAuley]

User-Agent:       Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.2
Build Identifier: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.6) Gecko/20050317 Firefox/1.0.2

In the page at www.lemure.net/~chuck/hiddenForm_moz.html you can see a sample
code that demonstrates this problem.  By filtering out keyboard events in a
specific order, it is possible to for a webpage to specify the file wanted for
upload.  By combining this with CSS, the upload dialog becomes invisible and the
user in unaware of the fact that they are entering a file.

If this is combined with a website related to technical discussion or similar
that has users entering a lot of / \ and : then it becomes somewhat trivial to
upload files.


Reproducible: Always

Steps to Reproduce:
In the problem url specified, enter text into the text box.  If a user types the
correct character, it will be captured and send focus to the file upload dialog.
 This allows a webpage to specifiy a file name, in this example, C:\boot.ini.

Actual Results:  
file upload

Expected Results:  
Prevent shifting focus to/from file upload widget.

Comment 1

[Daniel Veditz [:dveditz]]

*** This bug has been marked as a duplicate of 56326 ***

Comment 2

[Gervase Markham [:gerv]]

Dan: you've marked this as a dupe of the wrong bug.

Gerv

Comment 3

[Daniel Veditz [:dveditz]]

excuse the dyslexia

*** This bug has been marked as a duplicate of 56236 ***

Comment 4

[Juha-Matti Laurio]

This case was assigned to CVE-2006-2894 after disclosed at full-disclosure list:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2006-2894