Fix crash in early data send with out-of-band PSK using AES CCM
@@ -436,11 +436,18 @@ static int derive_secret_key_and_iv(SSL *s, int sending, const EVP_MD *md,
uint32_t algenc;
ivlen = EVP_CCM_TLS_IV_LEN;
- if (s->s3.tmp.new_cipher == NULL) {
+ if (s->s3.tmp.new_cipher != NULL) {
+ algenc = s->s3.tmp.new_cipher->algorithm_enc;
+ } else if (s->session->cipher != NULL) {
/* We've not selected a cipher yet - we must be doing early data */
algenc = s->session->cipher->algorithm_enc;
+ } else if (s->psksession != NULL && s->psksession->cipher != NULL) {
+ /* We must be doing early data with out-of-band PSK */
+ algenc = s->psksession->cipher->algorithm_enc;
} else {
- algenc = s->s3.tmp.new_cipher->algorithm_enc;
+ SSLfatal(s, SSL_AD_INTERNAL_ERROR, SSL_F_DERIVE_SECRET_KEY_AND_IV,
+ ERR_R_EVP_LIB);
+ goto err;
}
if (algenc & (SSL_AES128CCM8 | SSL_AES256CCM8))
taglen = EVP_CCM8_TLS_TAG_LEN;
