full-disclosure - Re: Possible DoS in TamperData Add-on v10.1.0 for FireFox 3.0.8

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Date: Sun, 03 May 2009 16:44:28 -0400
From: Valdis.Kletnieks@...edu
To: Xia Shing Zee <xiashing@...il.com>
Cc: full-disclosure <full-disclosure@...ts.grok.org.uk>
Subject: Re: Possible DoS in TamperData Add-on v10.1.0 for
	FireFox 3.0.8

On Fri, 01 May 2009 23:59:35 +1000, Xia Shing Zee said:

> The loop tries to constantly read the streaming HTTP data. Firefox will
> become unresponsive and will offer the user to stop the script.
> The script can be continued, but with files over 8.00mb there is a
> possible DoS, as the script must constantly be 'continued'.

http://tamperdata.mozdev.org/warnings.html says:

# Request/Response pairs are stored in javascript arrays. Run this extension
for a long time any firefox may run out of memory - don't do this

Sounds like it's probably a known issue - you run long enough, those javascript
arrays are gonna get big and piggy, and trigger the "stop the script" warning.
Or can you verify that you're seeing some different issue?

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