CVE-2021-37198 : Security Advisory and Response

A vulnerability has been identified in COMOS versions V10.2, V10.3, and V10.4 if web components are used. The flaw exists in the CSRF prevention implementation of the COMOS Web component, allowing attackers to carry out cross-site request forgery attacks.

Understanding CVE-2021-37198

This CVE identifies a security vulnerability in Siemens' COMOS software, affecting versions V10.2, V10.3, and V10.4 when web components are utilized.

What is CVE-2021-37198?

CVE-2021-37198 points to a flaw in the CSRF prevention mechanism within the COMOS Web component, potentially enabling malicious actors to conduct cross-site request forgery attacks.

The Impact of CVE-2021-37198

Exploitation of this vulnerability could lead to unauthorized actions being performed on behalf of the user, posing a significant risk to the integrity and security of the affected systems.

Technical Details of CVE-2021-37198

The following technical details outline the specifics of CVE-2021-37198:

Vulnerability Description

The vulnerability lies in the flawed implementation of CSRF prevention in the COMOS Web component, creating an avenue for cross-site request forgery attacks.

Affected Systems and Versions

COMOS V10.2: All versions (if web components are used)
COMOS V10.3: All versions less than V10.3.3.3 (if web components are used)
COMOS V10.4: All versions less than V10.4.1 (if web components are used)

Exploitation Mechanism

Bad actors can exploit this vulnerability to trick authenticated users into unintentionally executing malicious actions on the affected system.

Mitigation and Prevention

To address CVE-2021-37198, consider the following mitigation strategies:

Immediate Steps to Take

It is recommended to disable web components if not required and implement strict access controls to mitigate the risk of CSRF attacks.

Long-Term Security Practices

Regular security assessments, user awareness training, and monitoring for abnormal behavior can help prevent security breaches.

Patching and Updates

Apply the latest patches provided by Siemens for COMOS versions V10.2, V10.3, and V10.4 to address the CSRF vulnerability.