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

[Rich Salz]

The branch OpenSSL_1_1_0-stable has been updated
       via  92ed7fa575a80955f3bb6efefca9bf576a953586 (commit)
      from  79e5eae6ab164efe4966685758b8f15c13698bb1 (commit)


- Log -----------------------------------------------------------------
commit 92ed7fa575a80955f3bb6efefca9bf576a953586
Author: David Woodhouse <David.Woodhouse at intel.com>
Date:   Wed Sep 7 16:53:18 2016 +0100

    Avoid EVP_PKEY_cmp() crash on EC keys without public component
    
    Some hardware devices don't provide the public EC_POINT data. The only
    way for X509_check_private_key() to validate that the key matches a
    given certificate is to actually perform a sign operation and then
    verify it using the public key in the certificate.
    
    Maybe that can come later, as discussed in issue 1532. But for now let's
    at least make it fail gracefully and not crash.
    
    GH: 1532
    
    Reviewed-by: Richard Levitte <levitte at openssl.org>
    Reviewed-by: Rich Salz <rsalz at openssl.org>
    (Merged from https://github.com/openssl/openssl/pull/1547)

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

Summary of changes:
 crypto/ec/ec_ameth.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/crypto/ec/ec_ameth.c b/crypto/ec/ec_ameth.c
index a899932..9792007 100644
--- a/crypto/ec/ec_ameth.c
+++ b/crypto/ec/ec_ameth.c
@@ -171,6 +171,8 @@ static int eckey_pub_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
     const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
     const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec),
         *pb = EC_KEY_get0_public_key(b->pkey.ec);
+    if (group == NULL || pa == NULL || pb == NULL)
+        return -2;
     r = EC_POINT_cmp(group, pa, pb, NULL);
     if (r == 0)
         return 1;
@@ -311,6 +313,8 @@ static int ec_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
 {
     const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec),
         *group_b = EC_KEY_get0_group(b->pkey.ec);
+    if (group_a == NULL || group_b == NULL)
+        return -2;
     if (EC_GROUP_cmp(group_a, group_b, NULL))
         return 0;
     else