Set the server sig algs before calling the session_secret_cb

Setting the server sig algs sets up the certificate "s3->tmp.valid_flags".
These are needed when calling ssl3_choose_cipher() which can happen
immediately after calling the session_secret_cb

Fixes #24213

Reviewed-by: Neil Horman <nhorman@openssl.org>
Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com>
Reviewed-by: Tomas Mraz <tomas@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/24309)

diff --git a/ssl/statem/statem_srvr.c b/ssl/statem/statem_srvr.c
index 47855da5bd13b5963165ade7ff5de1757b4ae153..1c38548fe047dbc59dc1c083a9b49aae1e88bb41 100644 (file)
--- a/ssl/statem/statem_srvr.c
+++ b/ssl/statem/statem_srvr.c
@@ -1959,6 +1959,11 @@ static int tls_early_post_process_client_hello(SSL_CONNECTION *s)
         }
     }
 
+    if (!s->hit && !tls1_set_server_sigalgs(s)) {
+        /* SSLfatal() already called */
+        goto err;
+    }
+
     if (!s->hit
             && s->version >= TLS1_VERSION
             && !SSL_CONNECTION_IS_TLS13(s)
@@ -2110,10 +2115,6 @@ static int tls_early_post_process_client_hello(SSL_CONNECTION *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);