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)
(cherry picked from commit 10c3c1c1ec41ce16e51b92bb18fab92d1a42b49c)

diff --git a/crypto/pem/pem_lib.c b/crypto/pem/pem_lib.c
index 33c03eec00f4d8ed587b1caa3b88939912b76c83..735cd54e571b66823e731aa74a358f52619caade 100644 (file)
--- a/crypto/pem/pem_lib.c
+++ b/crypto/pem/pem_lib.c
@@ -466,6 +466,7 @@ 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;