CVE-2020-12504 : Exploit Details and Defense Strategies

This CVE-2020-12504 article provides insights into an Improper Authorization vulnerability affecting multiple Comtrol RocketLinx products.

Understanding CVE-2020-12504

This section delves into the details of the CVE-2020-12504 vulnerability.

What is CVE-2020-12504?

The CVE-2020-12504 vulnerability involves an Improper Authorization issue in Pepperl+Fuchs P+F Comtrol RocketLinx products, allowing unauthorized access due to an active TFTP-Service.

The Impact of CVE-2020-12504

The vulnerability has a CVSS base score of 9.8, classified as Critical, with high impacts on confidentiality, integrity, and availability. It requires no privileges for exploitation and has a low attack complexity.

Technical Details of CVE-2020-12504

This section outlines the technical aspects of CVE-2020-12504.

Vulnerability Description

The vulnerability affects various Pepperl+Fuchs and Korenix products, allowing unauthorized access due to improper authorization mechanisms.

Affected Systems and Versions

Pepperl+Fuchs P+F Comtrol RocketLinx products: ES7510-XT, ES8509-XT, ES8510-XT, ES9528-XTv2, ES7506, ES7510, ES7528, ES8508, ES8508F, ES8510, ES8510-XTE, ES9528/ES9528-XT (all versions)
ICRL-M-8RJ45/4SFP-G-DIN, ICRL-M-16RJ45/4CP-G-DIN FW 1.2.3 and below
Korenix JetNet products: 5428G-20SFP, 5810G, 4706F, 4510, 5310
Westermo PMI-110-F2G (version < V1.8)

Exploitation Mechanism

The vulnerability can be exploited over a network with low complexity, impacting the confidentiality, integrity, and availability of the affected systems.

Mitigation and Prevention

Learn how to mitigate and prevent the CVE-2020-12504 vulnerability.

Immediate Steps to Take

Update ICRL-M-8RJ45/4SFP-G-DIN and ICRL-M-16RJ45/4CP-G-DIN to Firmware 1.3.1 and disable TFTP-Service.
Implement external protective measures for all other devices:
Block traffic from untrusted networks using a firewall, especially targeting the administration webpage.
Secure administrator and user access with strong passwords limited to a select group.

Long-Term Security Practices

Regularly monitor and update firmware to patch vulnerabilities.
Conduct security audits and penetration testing to identify and address potential weaknesses.

Patching and Updates

Stay informed about security advisories and updates from Pepperl+Fuchs, Korenix, and Westermo to apply patches promptly.