crypt32: Check length of sequence before checking tag.

254f9b9c · Juan Lang · Alexandre Julliard · 3dbdb311 · 254f9b9c
Commit 254f9b9c authored Sep 08, 2008 by Juan Lang Committed by Alexandre Julliard Sep 09, 2008
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decode.c dlls/crypt32/decode.c +5 -0

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--- a/dlls/crypt32/decode.c
+++ b/dlls/crypt32/decode.c
@@ -475,6 +475,11 @@ static BOOL CRYPT_AsnDecodeSequence(struct AsnDecodeSequenceItem items[],
     cbEncoded, dwFlags, pDecodePara, pvStructInfo, *pcbStructInfo,
     startingPointer);
+    if (!cbEncoded)
+    {
+        SetLastError(CRYPT_E_ASN1_EOD);
+        return FALSE;
+    }
    if (pbEncoded[0] == ASN_SEQUENCE)
    {
        DWORD dataLen;