XMMP/Jabber clients DoS vulnerability report

Ethan Blanton elb at pidgin.im
Wed Jan 27 13:40:17 EST 2010


Ethan Blanton spake unto us the following wisdom:
> OK, that's what I was hoping ot hear, is that it eventually unfreezes.
> I think we should handle this as follows:
> 
> 1) Implement a cap on smileys per message; it can be quite high, even
>    -- say 128.

I should add that I believe we should NOT commit this cap until the
embargo terms are hammered out, so as not to break the embargo.

> 2) Notify the original poster that we have verified the problem, that
>    it is *not* a crash bug and that Pidgin will eventually recover,
>    but that it is clearly a denial of service.
> 3) Request that, since the severity is rather low, this be embargoed
>    for some time which we will determine among the involved projects,
>    but which gives us time to make a proper next release, rather than
>    an emergency bugfix release.
> 
> How does that sound to everyone?  I think we should take some official
> course of action ASAP.  That is, after all, the reason we created this
> list.  :-)

So far I have agreement from Daniel.  I would like to respond to this
today.

Ethan

-- 
The laws that forbid the carrying of arms are laws [that have no remedy
for evils].  They disarm only those who are neither inclined nor
determined to commit crimes.
		-- Cesare Beccaria, "On Crimes and Punishments", 1764
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