[AsteriskBrasil] Res: RES: Vulnerabilidade Asterisk

Quarta Novembro 4 15:00:50 BRST 2009

Não culparia o Asterisk

http://www.ietf.org/rfc/rfc3261.txt - Sessão 10 Registrations

:-)

[]s

2009/11/4 José Eduardo C. Mazolini <eduardo_mazolini em yahoo.com>

> Eu acabo de fazer um teste com X-LITE
> E o asterisk é um problema, aconselho colocar um router SIP na frente e
> tratar esse problema.
> Ele não devia mostrar para o atacante qual ramal existe qual não. Pois
> depois de identificado o ramal existente ele passa a testar senhas.
>
> Obrigado pela dica do programa pois é necessário criar algo automático pra
> bloqueio de intrusos.
> Já ouvi falar em um serviço semelhante a DNS onde são cadastrados maquinas
> que geram ataque e esse registro dura algumas horas.
> Assim se alguem atacar meu asterisk eu bloqueio e registro esse ip la, vc
> antes de autorizar uma conexão já confere nesta lista se tiver vc ja
> bloqueia de cara o atacante.
>
> Isso pode ser complicado pois alguem mal intencionado pode fazer falsas
> acusações contra vc e vc fica bloqueado sem ter feito nada.
> Mas criar uma base desta com controle sobre os que fazem a denucia, só
> servidores da empresa, grupo de trabalho, empresas que possuem negocio em
> comum pode ajudar.
>
> Observe o que aconteceu:
>
> Ramal 1 inexistente:
> x-lite: REGISTER
> Asterisk: 404 Not found
>
> Ramal 2 existente
> x-lite: REGISTER
> Asterisk: 100 Trying
> Asterisk: 401 Unauthorized
> x-lite: REGISTER
> Asterisk: 100 Trying
> Asterisk: 403 Forbidden (Bad auth)
>
>
>
>
>
> Eduardo Mazolini
> (19) 9191-2705
>
>
> ------------------------------
> *De:* Luciano Antonio Borguetti Faustino <
> lucianoborguetti.listas em gmail.com>
>
> *Para:* asteriskbrasil em listas.asteriskbrasil.org
> *Enviadas:* Quarta-feira, 4 de Novembro de 2009 13:40:10
>
> *Assunto:* Re: [AsteriskBrasil] RES: Vulnerabilidade Asterisk
>
> Eder,
>
> Interessante,
>
> Trantando o problema mais profissionamente acoselho a instalação de um
> IDS/IPS (Snort por exemplo -http://www.snort.org/), onde você consegue
> identificar esses tipos de ataques e criar ações, como exemplo o bloqueio do
> host atacante.
>
> []s,
>
> 2009/11/4 Itamar Reis Peixoto <itamar em ispbrasil.com.br>
>
>> eu continuo com a minha opiniao de que iptables e' pra boiola
>>
>> route add -host 208.38.164.96 reject
>>
>> resolve o problema !
>>
>>
>>
>> 2009/11/4 Eder Souza <eder.souza em bsd.com.br>
>> >
>> > Log do Asterisk segue ae para vc ver um ataque massivo chutando users
>> sips, repare quantos users ele conseguiu chutar em apenas um segundo !!!
>> >
>> >
>> > uma amostra do log referente ao ataque !!!
>> >
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"0"<sip:0 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"1"<sip:1 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"2"<sip:2 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"3"<sip:3 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"4"<sip:4 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"5"<sip:5 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"6"<sip:6 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"7"<sip:7 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"8"<sip:8 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"9"<sip:9 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"10"<sip:10 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"11"<sip:11 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"12"<sip:12 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"13"<sip:13 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"14"<sip:14 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"15"<sip:15 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"16"<sip:16 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"17"<sip:17 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"18"<sip:18 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"19"<sip:19 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"20"<sip:20 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"21"<sip:21 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"22"<sip:22 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"23"<sip:23 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"24"<sip:24 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"25"<sip:25 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"26"<sip:26 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"27"<sip:27 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"28"<sip:28 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"29"<sip:29 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"30"<sip:30 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"31"<sip:31 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"32"<sip:32 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"33"<sip:33 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"34"<sip:34 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"35"<sip:35 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"36"<sip:36 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"37"<sip:37 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"38"<sip:38 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"39"<sip:39 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"40"<sip:40 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"41"<sip:41 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"42"<sip:42 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"43"<sip:43 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"44"<sip:44 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"45"<sip:45 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"46"<sip:46 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"47"<sip:47 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"48"<sip:48 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"49"<sip:49 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"50"<sip:50 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"51"<sip:51 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"52"<sip:52 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"53"<sip:53 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"54"<sip:54 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"55"<sip:55 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"56"<sip:56 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"57"<sip:57 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"58"<sip:58 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:26] NOTICE[2751] chan_sip.c: Registration from
>> '"59"<sip:59 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:27] NOTICE[2751] chan_sip.c: Registration from
>> '"60"<sip:60 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:27] NOTICE[2751] chan_sip.c: Registration from
>> '"61"<sip:61 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:27] NOTICE[2751] chan_sip.c: Registration from
>> '"62"<sip:62 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:27] NOTICE[2751] chan_sip.c: Registration from
>> '"63"<sip:63 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:27] NOTICE[2751] chan_sip.c: Registration from
>> '"64"<sip:64 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:27] NOTICE[2751] chan_sip.c: Registration from
>> '"65"<sip:65 em IP>' failed for '208.38.164.96' - No matching peer found
>> > [Oct 12 09:31:27] NOTICE[2751] chan_sip.c: Registration from
>> '"66"<sip:66 em IP>' failed for '208.38.164.96' - No matching peer found
>>
>>
>> ------------
>>
>> Itamar Reis Peixoto
>>
>> e-mail/msn/google talk/sip: itamar em ispbrasil.com.br
>> skype: itamarjp
>> icq: 81053601
>> +55 11 4063 5033
>> +55 34 3221 8599
>>
>> _______________________________________________
>> http://www.voipmania.com.br
>> Telefone IP sem fio Gigaset A580IP por 6 x R$59,90.
>> Promoção por tempo limitado!
>> Acesse agora http://promo.voipmania.com.br
>>
>> _______________________________________________
>> Lista de discussões AsteriskBrasil.org
>> AsteriskBrasil em listas.asteriskbrasil.org
>> http://listas.asteriskbrasil.org/mailman/listinfo/asteriskbrasil
>>
>
>
>
> --
> #!/bin/bash
>
> Luciano Antonio Borguetti Faustino
> GNU/Linux user number: 339110
> ICQ UIN number: 82092097 - ICQ ainda na atividade :)
> http://lucianoborguetti.blogspot.com
>
> Preconceito é opinião sem conhecimento.
>
> :wq
>
> ------------------------------
> Veja quais são os assuntos do momento no Yahoo! + Buscados: Top 10<http://br.rd.yahoo.com/mail/taglines/mail/*http://br.maisbuscados.yahoo.com/>-
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> Música<http://br.rd.yahoo.com/mail/taglines/mail/*http://br.maisbuscados.yahoo.com/m%C3%BAsica/>-
> Esportes<http://br.rd.yahoo.com/mail/taglines/mail/*http://br.maisbuscados.yahoo.com/esportes/>
>
>
> _______________________________________________
> http://www.voipmania.com.br
> Telefone IP sem fio Gigaset A580IP por 6 x R$59,90.
> Promoção por tempo limitado!
> Acesse agora http://promo.voipmania.com.br
>
> _______________________________________________
> Lista de discussões AsteriskBrasil.org
> AsteriskBrasil em listas.asteriskbrasil.org
> http://listas.asteriskbrasil.org/mailman/listinfo/asteriskbrasil
>

-- 
#!/bin/bash

Luciano Antonio Borguetti Faustino
GNU/Linux user number: 339110
ICQ UIN number: 82092097 - ICQ ainda na atividade :)
http://lucianoborguetti.blogspot.com

Preconceito é opinião sem conhecimento.

:wq
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