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Re: [xmpp] IQ Handling vulnerabilities

Thijs Alkemade <thijs@xnyhps.nl> Mon, 10 February 2014 12:12 UTC

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From: Thijs Alkemade <thijs@xnyhps.nl>
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Date: Mon, 10 Feb 2014 13:12:27 +0100
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References: <CAOb_FnxS-dMT85N7LHj5M9JWk3pL85=ugrDqaT7j5d28HBr0Cw@mail.gmail.com> <CF194491.38AD3%jhildebr@cisco.com> <2F5E925F-021D-408E-91D9-3CC5BEB6BEC6@nostrum.com> <48F4D361-4403-47E6-862D-FBDDDEBCC642@xnyhps.nl> <CF1A369C.38BE2%jhildebr@cisco.com> <CAKHUCzyCwKbmnUoXLHW=XzYbiFrcg-dQsDojGUnA-_r3qK+_Vg@mail.gmail.com> <12420410-2615-4A32-8998-AFF19D4EF7BC@xnyhps.nl> <CAKHUCzw6r4vZOHmLm62YgQAj72EjiXbqc8ZShC4=pJ5gxff31w@mail.gmail.com> <CAOb_FnybyUd69ayMPiLZd1i1n4=cnPA6NB-d3BqguSRH3cJLtA@mail.gmail.com>
To: kevin@kismith.co.uk
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Cc: Ben Campbell <ben@nostrum.com>, XMPP Working Group <xmpp@ietf.org>
Subject: Re: [xmpp] IQ Handling vulnerabilities
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On 9 feb. 2014, at 23:04, Kevin Smith <kevin@kismith.co.uk> wrote:

> On Sun, Feb 9, 2014 at 7:30 PM, Dave Cridland <dave@cridland.net> wrote:
>> I'd hope Kev's example is way off, though - I suspect that servers ignore
>> the XEP-0199 reply stanza and just look for activity on the socket.
> 
> I would hope so, too - but given some of the things we've seen on the
> client side in the last couple of weeks, I don't think it's
> unreasonable to suspect there might be servers with as severe
> problems. Whether we can find the vulnerabilities or not, though,
> doesn't reduce the need to document the issues, I think.
> 
> /K

I’ve submitted an I-D about this issue here, to help discussion at IETF 89:

http://datatracker.ietf.org/doc/draft-alkemade-xmpp-iq-validation/

Regards,
Thijs

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