Multiple SEIKO EPSON printer drivers for Windows OS are configured with an improper access permission settings when installed or used in a language other than English. If a user is directed to place a crafted DLL file in a location of an attackers choosing, the attacker may execute arbitrary code with SYSTEM privilege on a Windows system on which the printer driver is installed.
Weakness
During installation, installed file permissions are set to allow anyone to modify those files.
Potential Mitigations
- Compartmentalize the system to have “safe” areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area.
- Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
References