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Bad Firefox implementation of SSL/TLS (error: ssl_error_no_cypher_overlap, RC4 and 3DES are turned OFF)

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  • Τελευταία απάντηση από cor-el

rasj
rasj
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When I turned OFF RC4 and 3DES Firefox can't connect to some SSL-server. But Internet Explorer and Opera with the same (absence of RC4 and 3DES and to the same server) can do it.

Why? I think this is the BAD implementation of SSL/TLS or a BUG!

And why in Firefox there are no cipher suits with SHA-256? I see in ServerHello a cipher suite(choosen by server): TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d) But this cipher suite absent in Firefox!


Firefox cipher suits:

TLS_EMPTY_RENEGOTIATION_INFO_SCSV (0x00ff) TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA (0xc00a) TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014) TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA (0x0088) TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA (0x0087) TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x0039) TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038) TLS_ECDH_RSA_WITH_AES_256_CBC_SHA (0xc00f) TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA (0xc005) TLS_RSA_WITH_CAMELLIA_256_CBC_SHA (0x0084) TLS_RSA_WITH_AES_256_CBC_SHA (0x0035) TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA (0xc009) TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013) TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA (0x0045) TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA (0x0044) TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x0033) TLS_DHE_DSS_WITH_AES_128_CBC_SHA (0x0032) TLS_ECDH_RSA_WITH_AES_128_CBC_SHA (0xc00e) TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA (0xc004) TLS_RSA_WITH_CAMELLIA_128_CBC_SHA (0x0041) TLS_RSA_WITH_AES_128_CBC_SHA (0x002f)


Opera cipher suits:

TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d) TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 (0x006b) TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 (0x006a) TLS_DH_RSA_WITH_AES_256_CBC_SHA256 (0x0069) TLS_DH_DSS_WITH_AES_256_CBC_SHA256 (0x0068) TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x0039) TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038) TLS_DH_RSA_WITH_AES_256_CBC_SHA (0x0037) TLS_DH_DSS_WITH_AES_256_CBC_SHA (0x0036) TLS_RSA_WITH_AES_256_CBC_SHA (0x0035)


IE cipher suits:

TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d) TLS_RSA_WITH_AES_256_CBC_SHA (0x0035) TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014) TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028) TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 (0x006a) TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038)

When I turned OFF RC4 and 3DES Firefox can't connect to some SSL-server. But Internet Explorer and Opera with the same (absence of RC4 and 3DES and to the same server) can do it. Why? I think this is the BAD implementation of SSL/TLS or a BUG! And why in Firefox there are no cipher suits with SHA-256? I see in ServerHello a cipher suite(choosen by server): TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d) But this cipher suite absent in Firefox! Firefox cipher suits: TLS_EMPTY_RENEGOTIATION_INFO_SCSV (0x00ff) TLS_ECDHE_ECDSA_WITH_AES_256_CBC_SHA (0xc00a) TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014) TLS_DHE_RSA_WITH_CAMELLIA_256_CBC_SHA (0x0088) TLS_DHE_DSS_WITH_CAMELLIA_256_CBC_SHA (0x0087) TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x0039) TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038) TLS_ECDH_RSA_WITH_AES_256_CBC_SHA (0xc00f) TLS_ECDH_ECDSA_WITH_AES_256_CBC_SHA (0xc005) TLS_RSA_WITH_CAMELLIA_256_CBC_SHA (0x0084) TLS_RSA_WITH_AES_256_CBC_SHA (0x0035) TLS_ECDHE_ECDSA_WITH_AES_128_CBC_SHA (0xc009) TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA (0xc013) TLS_DHE_RSA_WITH_CAMELLIA_128_CBC_SHA (0x0045) TLS_DHE_DSS_WITH_CAMELLIA_128_CBC_SHA (0x0044) TLS_DHE_RSA_WITH_AES_128_CBC_SHA (0x0033) TLS_DHE_DSS_WITH_AES_128_CBC_SHA (0x0032) TLS_ECDH_RSA_WITH_AES_128_CBC_SHA (0xc00e) TLS_ECDH_ECDSA_WITH_AES_128_CBC_SHA (0xc004) TLS_RSA_WITH_CAMELLIA_128_CBC_SHA (0x0041) TLS_RSA_WITH_AES_128_CBC_SHA (0x002f) Opera cipher suits: TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d) TLS_DHE_RSA_WITH_AES_256_CBC_SHA256 (0x006b) TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 (0x006a) TLS_DH_RSA_WITH_AES_256_CBC_SHA256 (0x0069) TLS_DH_DSS_WITH_AES_256_CBC_SHA256 (0x0068) TLS_DHE_RSA_WITH_AES_256_CBC_SHA (0x0039) TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038) TLS_DH_RSA_WITH_AES_256_CBC_SHA (0x0037) TLS_DH_DSS_WITH_AES_256_CBC_SHA (0x0036) TLS_RSA_WITH_AES_256_CBC_SHA (0x0035) IE cipher suits: TLS_RSA_WITH_AES_256_CBC_SHA256 (0x003d) TLS_RSA_WITH_AES_256_CBC_SHA (0x0035) TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA (0xc014) TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384 (0xc028) TLS_DHE_DSS_WITH_AES_256_CBC_SHA256 (0x006a) TLS_DHE_DSS_WITH_AES_256_CBC_SHA (0x0038)

Τροποποιήθηκε στις από το χρήστη rasj

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cor-el
cor-el
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I think that it is best to keep the discussion in one thread, so I locking the other two that you created.

Please continue here: [/questions/976999]