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Delay setting the sig algs until after the cert_cb has been called

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Otherwise the sig algs are reset if SSL_set_SSL_CTX() gets called.

Fixes #7244

Reviewed-by: Ben Kaduk <kaduk@mit.edu>
(Merged from https://github.com/openssl/openssl/pull/7257)

(cherry picked from commit 524006dd1b)
This commit is contained in:
Matt Caswell 2018-09-18 17:45:39 +01:00
parent 4ccd6c5479
commit ec6788fb8c
1 changed files with 17 additions and 15 deletions
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32
ssl/statem/statem_srvr.c
View file

@ -2056,10 +2056,6 @@ static int tls_early_post_process_client_hello(SSL *s)
#else
s->session->compress_meth = (comp == NULL) ? 0 : comp->id;
#endif
if (!tls1_set_server_sigalgs(s)) {
/* SSLfatal() already called */
goto err;
}
}
sk_SSL_CIPHER_free(ciphers);
@ -2227,19 +2223,25 @@ WORK_STATE tls_post_process_client_hello(SSL *s, WORK_STATE wst)
if (wst == WORK_MORE_B) {
if (!s->hit || SSL_IS_TLS13(s)) {
/* Let cert callback update server certificates if required */
if (!s->hit && s->cert->cert_cb != NULL) {
int rv = s->cert->cert_cb(s, s->cert->cert_cb_arg);
if (rv == 0) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR,
SSL_F_TLS_POST_PROCESS_CLIENT_HELLO,
SSL_R_CERT_CB_ERROR);
if (!s->hit) {
if (s->cert->cert_cb != NULL) {
int rv = s->cert->cert_cb(s, s->cert->cert_cb_arg);
if (rv == 0) {
SSLfatal(s, SSL_AD_INTERNAL_ERROR,
SSL_F_TLS_POST_PROCESS_CLIENT_HELLO,
SSL_R_CERT_CB_ERROR);
goto err;
}
if (rv < 0) {
s->rwstate = SSL_X509_LOOKUP;
return WORK_MORE_B;
}
s->rwstate = SSL_NOTHING;
}
if (!tls1_set_server_sigalgs(s)) {
/* SSLfatal already called */
goto err;
}
if (rv < 0) {
s->rwstate = SSL_X509_LOOKUP;
return WORK_MORE_B;
}
s->rwstate = SSL_NOTHING;
}
/* In TLSv1.3 we selected the ciphersuite before resumption */