Juan Lang : crypt32: Validate parameters better in CryptDecodeObject.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 5d8d9e7d08836698d9f55153cece7c006f7c1751
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=5d8d9e7d08836698d9f55153cece7c006f7c1751

Author: Juan Lang <juan.lang at gmail.com>
Date:   Fri Aug 10 11:20:24 2007 -0700

crypt32: Validate parameters better in CryptDecodeObject.

---

 dlls/crypt32/decode.c |   10 ++++++++++
 1 files changed, 10 insertions(+), 0 deletions(-)

diff --git a/dlls/crypt32/decode.c b/dlls/crypt32/decode.c
index c6f7305..7c50b27 100644
--- a/dlls/crypt32/decode.c
+++ b/dlls/crypt32/decode.c
@@ -4138,6 +4138,16 @@ BOOL WINAPI CryptDecodeObject(DWORD dwCertEncodingType, LPCSTR lpszStructType,
         SetLastError(ERROR_INVALID_PARAMETER);
         return FALSE;
     }
+    if (!cbEncoded)
+    {
+        SetLastError(CRYPT_E_ASN1_EOD);
+        return FALSE;
+    }
+    if (cbEncoded > MAX_ENCODED_LEN)
+    {
+        SetLastError(CRYPT_E_ASN1_LARGE);
+        return FALSE;
+    }
 
     if (!(pCryptDecodeObjectEx = CRYPT_GetBuiltinDecoder(dwCertEncodingType,
      lpszStructType)))