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[LDR] Check forwarded imports against the manifest before trying to load them

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CORE-15729
This commit is contained in:
Mark Jansen
2019-02-07 20:57:04 +01:00
parent d9c4d28e59
commit 27cc4c6a08
1 changed files with 34 additions and 3 deletions
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37
dll/ntdll/ldr/ldrpe.c
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@@ -1133,13 +1133,44 @@ FailurePath:
/* Make sure the conversion was OK */
if (NT_SUCCESS(Status))
{
/* Load the forwarder, free the temp string */
Status = LdrpLoadDll(FALSE,
WCHAR StringBuffer[MAX_PATH];
UNICODE_STRING StaticString, *RedirectedImportName;
BOOLEAN Redirected = FALSE;
RtlInitEmptyUnicodeString(&StaticString, StringBuffer, sizeof(StringBuffer));
/* Check if the SxS Assemblies specify another file */
Status = RtlDosApplyFileIsolationRedirection_Ustr(TRUE,
&TempUString,
&LdrApiDefaultExtension,
&StaticString,
NULL,
&RedirectedImportName,
NULL,
NULL,
NULL);
if (NT_SUCCESS(Status))
{
if (ShowSnaps)
{
DPRINT1("LDR: %Z got redirected to %wZ\n", &ForwarderName, RedirectedImportName);
}
/* Let Ldrp know */
Redirected = TRUE;
}
else
{
RedirectedImportName = &TempUString;
}
/* Load the forwarder */
Status = LdrpLoadDll(Redirected,
NULL,
NULL,
&TempUString,
RedirectedImportName,
&ForwarderHandle,
FALSE);
RtlFreeUnicodeString(&TempUString);
}