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  • #9308
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Issue created Jul 22, 2013 by cypherpunks@cypherpunks

JavaScript's BrowserFeedWriter() and other exceptions leak installation paths on OS X and Windows

In #5922 (closed) it was claimed that the vulnerability uncovered at Defcon 17 by Gregory Fleischer (http://pseudo-flaw.net/tor/torbutton/browserfeedwriter-error.html) doesn't affect TBB on OS X. I have just replicated this bug on 2.3.25-10.

When the TBB is installed in a user's homedir, calling (new BrowserFeedWriter()).close() will leak their username in a JS exception.

To upload designs, you'll need to enable LFS and have an admin enable hashed storage. More information
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