dimanche 1 mars 2015

Completely getting rid of SSLv3 on Apache



Our security team is asking that we completely disable SSLv3 on some of our servers running Apache. I've used the SSLProtocol entry in the ssl.conf file (like SSLProtocol ALL -SSLv2 -SSLv3) and various SSLCipherSuite entries to try to disable this completely, but to no avail. I still get the following as an example output from nmap


Starting Nmap 6.47 ( http://nmap.org ) at 2015-03-01 16:49 Mountain Standard Tim e Nmap scan report for ... Host is up (0.0045s latency). PORT STATE SERVICE 443/tcp open https | ssl-enum-ciphers: | SSLv3: No supported ciphers found | TLSv1.0: | ciphers: | TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_DHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_DHE_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_AES_256_CBC_SHA - strong | TLS_RSA_WITH_RC4_128_SHA - strong | compressors: | NULL |_ least strength: strong


On a server running Tomcat for instance, we're able to get no trace of SSLv3, as in this example


Starting Nmap 6.47 ( http://nmap.org ) at 2015-03-01 16:54 Mountain Standard Tim e Nmap scan report for... Host is up (0.0022s latency). PORT STATE SERVICE 443/tcp open https | ssl-enum-ciphers: | TLSv1.0: | ciphers: | TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_DHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_RC4_128_SHA - strong | TLS_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_RC4_128_MD5 - strong | TLS_RSA_WITH_RC4_128_SHA - strong | compressors: | NULL | TLSv1.1: | ciphers: | TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_DHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_RC4_128_SHA - strong | TLS_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_RC4_128_MD5 - strong | TLS_RSA_WITH_RC4_128_SHA - strong | compressors: | NULL | TLSv1.2: | ciphers: | TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_DHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_DHE_RSA_WITH_AES_128_CBC_SHA256 - strong | TLS_DHE_RSA_WITH_AES_128_GCM_SHA256 - strong | TLS_ECDHE_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA - strong | TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256 - strong | TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256 - strong | TLS_ECDHE_RSA_WITH_RC4_128_SHA - strong | TLS_RSA_WITH_3DES_EDE_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA - strong | TLS_RSA_WITH_AES_128_CBC_SHA256 - strong | TLS_RSA_WITH_AES_128_GCM_SHA256 - strong | TLS_RSA_WITH_RC4_128_MD5 - strong | TLS_RSA_WITH_RC4_128_SHA - strong | compressors: | NULL |_ least strength: strong


Has anyone been able to disable SSLv3 completely in Apache? Is there a way to get SSLv3 completely disabled in Apache? Thank you for the time





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