Untrusted search path vulnerability in Windows 7 allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

Untrusted search path vulnerability in Windows 7 allows an attacker to gain privileges via a Trojan horse DLL in an unspecified directory.

In standard DLL files provided by Windows 7, there are some DLL files read from the same directory where the program resides when executing the program (CWE-427). Microsoft states that the root cause of this vulnerability is "Application Directory (App Dir) DLL planting", thus there is no plan to release any security updates for Windows 7 to address this issue. For details, refer to "Application Directory (App Dir) DLL planting" released by Microsoft. Takashi Yoshikawa of Mitsui Bussan Secure Directions, Inc. reported this vulnerability to IPA. JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.