From b7ee4815f2452c854cc859e8dda88f2673cdddea Mon Sep 17 00:00:00 2001 From: Matt Caswell Date: Thu, 4 Jun 2015 11:16:16 +0100 Subject: [PATCH] Clean premaster_secret for GOST Ensure OPENSSL_cleanse() is called on the premaster secret value calculated for GOST. With thanks to the Open Crypto Audit Project for reporting this issue. Reviewed-by: Rich Salz --- ssl/s3_srvr.c | 1 + 1 file changed, 1 insertion(+) diff --git a/ssl/s3_srvr.c b/ssl/s3_srvr.c index 88e649d315..90a67d1105 100644 --- a/ssl/s3_srvr.c +++ b/ssl/s3_srvr.c @@ -2825,6 +2825,7 @@ int ssl3_get_client_key_exchange(SSL *s) s-> session->master_key, premaster_secret, 32); + OPENSSL_cleanse(premaster_secret, sizeof(premaster_secret)); if (s->session->master_key_length < 0) { al = SSL_AD_INTERNAL_ERROR; SSLerr(SSL_F_SSL3_GET_CLIENT_KEY_EXCHANGE, ERR_R_INTERNAL_ERROR); -- 2.34.1