CVE request New-djbdns: dnscache: possible DoS

[P J P <ppandit () redhat com>]

   Hello,

dnscache(8) resolver reads messages over a TCP connection one byte at a time. 
For long messages, it'll trigger as many read(2) calls as the length of a 
message. Thus consuming extra CPU cycles. A malicious remote user could use 
this to cause a DoS.

Upstream fix:
-------------
 -> https://github.com/pjps/ndjbdns/commit/a67293ce12832b55ec4271536282290ed17863f6

Reference:
----------
 -> http://download.pureftpd.org/misc/dnscache-dos.c


Thank you.
--
Prasad J Pandit / Red Hat Security Response Team