[openssl-commits] [openssl] OpenSSL_1_1_0-stable update

[Matt Caswell]

The branch OpenSSL_1_1_0-stable has been updated
       via  6939eab03a6e23d2bd2c3f5e34fe1d48e542e787 (commit)
      from  e4fa7cc3fb9909c6aee411de15a06f918687b8e2 (commit)


- Log -----------------------------------------------------------------
commit 6939eab03a6e23d2bd2c3f5e34fe1d48e542e787
Author: Billy Brumley <bbrumley at gmail.com>
Date:   Wed Apr 11 10:10:58 2018 +0300

    RSA key generation: ensure BN_mod_inverse and BN_mod_exp_mont both get called with BN_FLG_CONSTTIME flag set.
    
    CVE-2018-0737
    
    Reviewed-by: Rich Salz <rsalz at openssl.org>
    Reviewed-by: Matt Caswell <matt at openssl.org>

-----------------------------------------------------------------------

Summary of changes:
 crypto/rsa/rsa_gen.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/crypto/rsa/rsa_gen.c b/crypto/rsa/rsa_gen.c
index 9af43e0..79f77e3 100644
--- a/crypto/rsa/rsa_gen.c
+++ b/crypto/rsa/rsa_gen.c
@@ -89,6 +89,8 @@ static int rsa_builtin_keygen(RSA *rsa, int bits, BIGNUM *e_value,
     if (BN_copy(rsa->e, e_value) == NULL)
         goto err;
 
+    BN_set_flags(rsa->p, BN_FLG_CONSTTIME);
+    BN_set_flags(rsa->q, BN_FLG_CONSTTIME);
     BN_set_flags(r2, BN_FLG_CONSTTIME);
     /* generate p and q */
     for (;;) {