Re: [xmpp] #7: text on SRV Security Checks is unclear

Peter Saint-Andre <stpeter@stpeter.im> Fri, 25 June 2010 00:59 UTC

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Subject: Re: [xmpp] #7: text on SRV Security Checks is unclear
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On 6/14/10 10:16 AM, xmpp issue tracker wrote:
> #7: text on SRV Security Checks is unclear
> --------------------------------+-------------------------------------------
>  Reporter:  stpeter@…           |       Owner:  stpeter@…         
>      Type:  defect              |      Status:  new               
>  Priority:  minor               |   Milestone:                    
> Component:  3920bis             |     Version:                    
>  Severity:  In WG Last Call     |    Keywords:                    
> --------------------------------+-------------------------------------------
>  Reported by Dave Cridland:
> 
>  The text is unclear in Section 3.2.4 (SRV Security Checks).
> 
>  "I'm unclear on precisely what this means. Is this saying that if I lookup
>  cridland.net and find that it's hosted at Google, then I should ask my
>  user about this? Why?"

Because a malicious attacker with access to the DNS server data, or able
to cause spoofed answers to be cached in a recursive resolver, can
potentially cause the initiating entity to connect to any XMPP server
chosen by the attacker.

(Yes, I borrowed that text from draft-daboo-srv-email-04.)

Peter

-- 
Peter Saint-Andre
https://stpeter.im/