Commit fc7c011d1aa182de815ac31906ebc2aa36803bb7
2023-07-03T18:34:23
Add missing check that section index in get_image_section() is valid Number is stored in NumberOfRvaAndSizes and it may be less than IMAGE_NUMBEROF_DIRECTORY_ENTRIES.
diff --git a/src/dlfcn.c b/src/dlfcn.c
index c4563d2..cb9f9bb 100644
--- a/src/dlfcn.c
+++ b/src/dlfcn.c
@@ -640,7 +640,7 @@ static BOOL get_image_section( HMODULE module, int index, void **ptr, DWORD *siz
if( optionalHeader->Magic != IMAGE_NT_OPTIONAL_HDR_MAGIC )
return FALSE;
- if( index < 0 || index >= IMAGE_NUMBEROF_DIRECTORY_ENTRIES )
+ if( index < 0 || index >= IMAGE_NUMBEROF_DIRECTORY_ENTRIES || index >= optionalHeader->NumberOfRvaAndSizes )
return FALSE;
if( optionalHeader->DataDirectory[index].Size == 0 || optionalHeader->DataDirectory[index].VirtualAddress == 0 )