Multiple DLL side loading vulnerabilities were found in various COM components. These issues can be exploited by loading various these components as an embedded OLE object. When instantiating a vulnerable object Windows will try to load one or more DLLs from the current working directory. If an attacker convinces the victim to open a specially crafted (Office) document from a directory also containing the attacker's DLL file, it is possible to execute arbitrary code with the privileges of the target user. This can potentially result in the attacker taking complete control of the affected system.
54a85ca989c4eaff178f934a3bf1f889b5563dba98e78c59197f8309e65b7406A DLL side loading vulnerability was found in the Shutdown UX DLL. This issue can be exploited by loading the Authentication UI Shutdown Choices object as an embedded OLE object. When instantiating the object Windows will try to load the DLL wuaext.dll from the current working directory. If an attacker convinces the user to open a specially crafted (Office) document from a directory also containing the attacker's DLL file, it is possible to execute arbitrary code with the privileges of the target user. This can potentially result in the attacker taking complete control of the affected system.
b96ff440d177a2b1c8d194a3eeb5ba6a3405ca91223f3d328cdc4c4755b3ac20It is possible for an attacker to execute a DLL planting attack in Microsoft Office with a specially crafted OLE object. Testing was performed on a Windows 7 x64 virtual machine with Office 2013 installed and the latest updates applied. Proof of concept included.
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