Zero-fill IV by default.

Fixes uninitialized memory read reported by Nick Mathewson

Reviewed-by: Tim Hudson <tjh@openssl.org>
(Merged from https://github.com/openssl/openssl/pull/6603)

diff --git a/crypto/pem/pem_lib.c b/crypto/pem/pem_lib.c
index 7c82561ba40ee53031aab3af03325a904675e1fc..5c21a868466f5661ac4fc97bfe544fcb6efa05de 100644 (file)
--- a/crypto/pem/pem_lib.c
+++ b/crypto/pem/pem_lib.c
@@ -488,6 +488,7 @@ int PEM_get_EVP_CIPHER_INFO(char *header, EVP_CIPHER_INFO *cipher)
     char *dekinfostart, c;
 
     cipher->cipher = NULL;
+    memset(cipher->iv, 0, sizeof(cipher->iv));
     if ((header == NULL) || (*header == '\0') || (*header == '\n'))
         return 1;