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GNUTLS: Avoid null dereference in constructing ciphersuite
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1 changed files with 20 additions and 5 deletions
25
rb/gnutls.c
25
rb/gnutls.c
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@ -752,11 +752,26 @@ rb_ssl_get_cipher(rb_fde_t *F)
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{
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{
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static char buf[1024];
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static char buf[1024];
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snprintf(buf, sizeof(buf), "%s-%s-%s-%s",
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const char* proto_name =
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gnutls_protocol_get_name(gnutls_protocol_get_version(SSL_P(F))),
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gnutls_protocol_get_name(gnutls_protocol_get_version(SSL_P(F)));
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gnutls_kx_get_name(gnutls_kx_get(SSL_P(F))),
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gnutls_cipher_get_name(gnutls_cipher_get(SSL_P(F))),
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const char* kex_alg_name =
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gnutls_mac_get_name(gnutls_mac_get(SSL_P(F))));
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gnutls_kx_get_name(gnutls_kx_get(SSL_P(F)));
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const char* cipher_alg_name =
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gnutls_cipher_get_name(gnutls_cipher_get(SSL_P(F)));
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const char* mac_alg_name =
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gnutls_mac_get_name(gnutls_mac_get(SSL_P(F)));
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(void) snprintf(buf, sizeof buf, "%s%s%s%s%s%s%s",
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proto_name ? proto_name : "",
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proto_name ? ", " : "",
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kex_alg_name ? kex_alg_name : "",
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kex_alg_name ? "-" : "",
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cipher_alg_name ? cipher_alg_name : "",
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cipher_alg_name ? "-" : "",
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mac_alg_name ? mac_alg_name : "");
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return buf;
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return buf;
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}
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}
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