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43 lines
1.6 KiB
43 lines
1.6 KiB
7 years ago
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diff -up openssl-1.0.1e/ssl/s2_srvr.c.ssl2-ciphers openssl-1.0.1e/ssl/s2_srvr.c
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--- openssl-1.0.1e/ssl/s2_srvr.c.ssl2-ciphers 2016-01-14 17:38:50.000000000 +0100
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+++ openssl-1.0.1e/ssl/s2_srvr.c 2016-02-16 16:18:59.790225008 +0100
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@@ -392,7 +392,7 @@ static int get_client_master_key(SSL *s)
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}
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cp=ssl2_get_cipher_by_char(p);
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- if (cp == NULL)
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+ if (cp == NULL || sk_SSL_CIPHER_find(s->session->ciphers, cp) < 0)
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{
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ssl2_return_error(s,SSL2_PE_NO_CIPHER);
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SSLerr(SSL_F_GET_CLIENT_MASTER_KEY, SSL_R_NO_CIPHER_MATCH);
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@@ -692,9 +692,13 @@ static int get_client_hello(SSL *s)
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prio = cs;
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allow = cl;
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}
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+
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+ /* Generate list of SSLv2 ciphers shared between client and server */
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for (z=0; z<sk_SSL_CIPHER_num(prio); z++)
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{
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- if (sk_SSL_CIPHER_find(allow,sk_SSL_CIPHER_value(prio,z)) < 0)
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+ const SSL_CIPHER *cp = sk_SSL_CIPHER_value(prio, z);
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+ if ((cp->algorithm_ssl & SSL_SSLV2) == 0 ||
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+ sk_SSL_CIPHER_find(allow,cp) < 0)
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{
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(void)sk_SSL_CIPHER_delete(prio,z);
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z--;
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@@ -705,6 +709,14 @@ static int get_client_hello(SSL *s)
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sk_SSL_CIPHER_free(s->session->ciphers);
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s->session->ciphers = prio;
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}
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+
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+ /* Make sure we have at least one cipher in common */
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+ if (sk_SSL_CIPHER_num(s->session->ciphers) == 0)
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+ {
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+ ssl2_return_error(s, SSL2_PE_NO_CIPHER);
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+ SSLerr(SSL_F_GET_CLIENT_HELLO, SSL_R_NO_CIPHER_MATCH);
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+ return -1;
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+ }
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/* s->session->ciphers should now have a list of
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* ciphers that are on both the client and server.
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* This list is ordered by the order the client sent
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