[Pdns-users] Crappy DNS query make Mysql/Pdns crash

Lorens Kockum lorens-pdns-3987 at tagged.lorens.org
Mon Mar 29 22:10:36 UTC 2004

On Mon, Mar 29, 2004 at 06:04:23PM +0200, Antoine Levavasseur wrote:
> By the way, in my log '%20toto.mydomain.com' query is just
> "discarded as malformed qdomain '%20toto.mydomain.com' dropping"
> But a 'www.%20toto.mydomain.com' query leads to a 
> select content,ttl,prio,type,domain_id,name from records where type='NS'
> and name like '%20toto.mydomain.com' and domain_id='1'
> and lock the MySQL server for some time which can be fatal for my
> pdns instance.

Hmmm. Couldn't there be a problem with 36 queries like
"a%.example.com", "b%.example.com", ... "9%.example.com"
resulting in an effective zone transfer ?

#include <std_disclaim.h>     Salut Tonio       Lorens Kockum

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