CVE-2022-2102 : Vulnerability Insights and Analysis

A critical vulnerability in the Secheron SEPCOS Control and Protection Relay firmware package could allow an attacker to bypass controls limiting uploads and execute arbitrary PHP scripts. Learn about the impact, technical details, and mitigation steps related to CVE-2022-2102.

Understanding CVE-2022-2102

This CVE refers to a security flaw in the SEPCOS Control and Protection Relay firmware package by Secheron, impacting versions less than 1.23.21.

What is CVE-2022-2102?

The vulnerability allows attackers to bypass file upload restrictions, leading to the execution of malicious PHP scripts through modified code.

The Impact of CVE-2022-2102

With a CVSS base score of 9.4 (Critical), the vulnerability poses a high risk of unauthorized file uploads and code execution, potentially compromising system integrity.

Technical Details of CVE-2022-2102

Vulnerability Description

Controls limiting uploads to certain file extensions can be circumvented, enabling attackers to upload arbitrary files and execute PHP scripts.

Affected Systems and Versions

The vulnerability affects all versions of the SEPCOS Control and Protection Relay firmware package prior to 1.23.21.

Exploitation Mechanism

Attackers intercept file upload responses to modify code, facilitating arbitrary file uploads and PHP script execution.

Mitigation and Prevention

Immediate Steps to Take

Update to the latest firmware version (1.23.22 or higher for affected versions).
Implement network configurations to restrict PLC communications to essential devices only.
Close Ports 80 and 443 at the switch level and use approved devices for PLC connections.

Long-Term Security Practices

Conduct periodic maintenance checks for unauthorized changes or activities in device logs.

Patching and Updates

Secheron recommends updating to the latest versions based on the affected feature levels (1.23.xx, 1.24.xx, 1.25.xx) to mitigate the vulnerability.