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mingw-openssl/SOURCES/openssl-1.0.2k-cve-2018-073...

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diff -up openssl-1.0.2k/crypto/dh/dh_key.c.large-dh openssl-1.0.2k/crypto/dh/dh_key.c
--- openssl-1.0.2k/crypto/dh/dh_key.c.large-dh 2018-06-18 13:46:24.268137362 +0200
+++ openssl-1.0.2k/crypto/dh/dh_key.c 2018-06-18 13:59:04.605497462 +0200
@@ -133,7 +133,7 @@ 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;
@@ -145,6 +145,11 @@ static int generate_key(DH *dh)
}
#endif
+ 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;