Possible DoS in mpd 5.6 pppoe server

Adrian Chadd adrian at freebsd.org
Sat Apr 20 14:48:41 UTC 2013


Can you provide more information about the configuration of mpd and ppp?

the panic is in the dummynet code; can you provide information about
your ipfw/dummynet setup?

Thanks,



adrian


On 20 April 2013 06:21, Marcelo Gondim <gondim at bsdinfo.com.br> wrote:
> Hi all,
>
> I'm doing tests with mpdas pppoeserver. Tried to simulate an attack of 1000
> connections using an incorrect login and after a certain time can cause a
> kernel panic in the system. Below the panicgenerated:
>
> http://pastebin.com/nUXGVR3y
>
> Other equipment I do:
>
> # for (( i=0; i < 1000; i++ )); do ppp -ddial intnet ; done
>
> My System:
>
> Intel Motherboard Server S5500BC with Dual Processor Xeon(R) CPU E5606  @
> 2.13GHz
> 8Gb ram
>
> I do not understand programming in Cor Assembly. But could someone tell me
> if what happened was a system problem or hardware?
>
> Best regards,
>
> Gondim
>
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