[poppler] poppler/Decrypt.cc

[Albert Astals Cid]

 poppler/Decrypt.cc |    8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

New commits:
commit 68c5977980a60b2fbac0a5938e697cf09f37b0a2
Author: Albert Astals Cid <aacid at kde.org>
Date:   Fri May 25 23:06:53 2018 +0200

    BaseCryptStream: Initialize all of objKey
    
    fixes oss-fuzz/8493

diff --git a/poppler/Decrypt.cc b/poppler/Decrypt.cc
index 2e599bcd..9577b655 100644
--- a/poppler/Decrypt.cc
+++ b/poppler/Decrypt.cc
@@ -311,14 +311,16 @@ BaseCryptStream::BaseCryptStream(Stream *strA, Guchar *fileKey, CryptAlgorithm a
 				 int keyLength, int objNum, int objGen):
   FilterStream(strA)
 {
-  int i;
-
   algo = algoA;
 
   // construct object key
-  for (i = 0; i < keyLength; ++i) {
+  for (int i = 0; i < keyLength; ++i) {
     objKey[i] = fileKey[i];
   }
+  for (std::size_t i = keyLength; i < sizeof(objKey); ++i) {
+    objKey[i] = 0;
+  }
+
   switch (algo) {
   case cryptRC4:
     if (likely(keyLength < static_cast<int>(sizeof(objKey) - 4))) {