CVE-2021-37363

An Insecure Permissions issue exists in Gestionale Open 11.00.00. A low privilege account is able to rename the mysqld.exe file located in bin folder and replace with a malicious file that would connect back to an attacking computer giving system level privileges (nt authoritysystem) due to the service running as Local System. While a low privilege user is unable to restart the service through the application, a restart of the computer triggers the execution of the malicious file. The application also have unquoted service path issues.

Weakness

During installation, installed file permissions are set to allow anyone to modify those files.

Affected Software

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.

Related Attack Patterns

• https://cwe.mitre.org/data/definitions/1.html
• https://cwe.mitre.org/data/definitions/127.html
• https://cwe.mitre.org/data/definitions/81.html

References

• https://www.exploit-db.com/exploits/50449
• https://www.gestionaleopen.org/