openssl CVE-2018-0732 patch

recipes-connectivity/openssl/openssl/CVE-2018-0732.patch

+From 3984ef0b72831da8b3ece4745cac4f8575b19098 Mon Sep 17 00:00:00 2001
+From: Guido Vranken <guidovranken@gmail.com>
+Date: Mon, 11 Jun 2018 19:38:54 +0200
+Subject: [PATCH] Reject excessively large primes in DH key generation.
+
+CVE-2018-0732
+
+Signed-off-by: Guido Vranken <guidovranken@gmail.com>
+
+(cherry picked from commit 91f7361f47b082ae61ffe1a7b17bb2adf213c7fe)
+
+Reviewed-by: Tim Hudson <tjh@openssl.org>
+Reviewed-by: Matt Caswell <matt@openssl.org>
+(Merged from https://github.com/openssl/openssl/pull/6457)
+---
+ crypto/dh/dh_key.c | 7 ++++++-
+ 1 file changed, 6 insertions(+), 1 deletion(-)
+
+diff --git a/crypto/dh/dh_key.c b/crypto/dh/dh_key.c
+index 387558f1467..f235e0d682b 100644
+--- a/crypto/dh/dh_key.c
++++ b/crypto/dh/dh_key.c
+@@ -130,10 +130,15 @@ static int generate_key(DH *dh)
+     int ok = 0;
+     int generate_new_key = 0;
+     unsigned l;
+-    BN_CTX *ctx;
++    BN_CTX *ctx = NULL;
+     BN_MONT_CTX *mont = NULL;
+     BIGNUM *pub_key = NULL, *priv_key = NULL;
+
++    if (BN_num_bits(dh->p) > OPENSSL_DH_MAX_MODULUS_BITS) {
++        DHerr(DH_F_GENERATE_KEY, DH_R_MODULUS_TOO_LARGE);
++        return 0;
++    }
++
+     ctx = BN_CTX_new();
+     if (ctx == NULL)
+         goto err;
+

recipes-connectivity/openssl/openssl_%.bbappend

+FILESEXTRAPATHS_append := "${THISDIR}/${PN}:"
+
+SRC_URI += "file://CVE-2018-0732.patch"
+