CVE-2022-30309 : Exploit Details and Defense Strategies

A critical OS command injection vulnerability, tracked as CVE-2022-30309, has been discovered in the Festo Controller CECC-X-M1 and Servo Press Kit YJKP products. This vulnerability can lead to unauthorized execution of system commands with root privileges.

Understanding CVE-2022-30309

This CVE affects multiple versions of Festo Controller CECC-X-M1 and Servo Press Kit YJKP, allowing attackers to exploit the http-endpoint "cecc-x-web-viewer-request-off" POST request.

What is CVE-2022-30309?

In Festo Controller CECC-X-M1 product family in multiple versions, the http-endpoint "cecc-x-web-viewer-request-off" POST request doesn’t check for port syntax, enabling unauthorized execution of system commands with root privileges.

The Impact of CVE-2022-30309

The vulnerability has a CVSS base score of 9.8, categorizing it as critical. It possesses high impacts on confidentiality, integrity, and availability, with low attack complexity and no privileges required.

Technical Details of CVE-2022-30309

The vulnerability stems from improper access control command injection, leading to unauthorized execution of system commands with root privileges. Below are the detailed technical aspects:

Vulnerability Description

The http-endpoint "cecc-x-web-viewer-request-off" POST request doesn’t validate port syntax, allowing threat actors to execute system commands.

Affected Systems and Versions

Controller CECC-X-M1 (4407603) versions less than or equal to 3.8.14
Controller CECC-X-M1 (8124922) version 4.0.14
Controller CECC-X-M1-MV (4407605) versions less than or equal to 3.8.14
Controller CECC-X-M1-MV (8124923) version 4.0.14
Controller CECC-X-M1-MV-S1 (4407606) versions less than or equal to 3.8.14
Controller CECC-X-M1-MV-S1 (8124924) version 4.0.14
Controller CECC-X-M1-YS-L1 (8082793) versions less than or equal to 3.8.14
Controller CECC-X-M1-YS-L2 (8082794) versions less than or equal to 3.8.14
Controller CECC-X-M1-Y-YJKP (4803891) versions less than or equal to 3.8.14
Servo Press Kit YJKP (8077950) versions less than or equal to 3.8.14
Servo Press Kit YJKP- (8058596) versions less than or equal to 3.8.14

Exploitation Mechanism

Attackers can exploit the http-endpoint "cecc-x-web-viewer-request-off" POST request to inject malicious commands and gain unauthorized access with elevated privileges.

Mitigation and Prevention

To address CVE-2022-30309, immediate action and long-term security practices are recommended:

Immediate Steps to Take

Apply security patches provided by Festo promptly.
Restrict network access to vulnerable systems.
Monitor network traffic for any suspicious activity.

Long-Term Security Practices

Regularly update and patch all software components.
Implement strong access controls to limit unauthorized actions.
Conduct security trainings for employees to enhance awareness.

Patching and Updates

Ensure that all affected systems are updated with the latest patches from Festo to mitigate the vulnerability effectively.