CVE-2022-30791 Explained : Impact and Mitigation

A vulnerability in CODESYS V3 versions could allow unauthenticated attackers to block TCP connections, impacting system availability.

Understanding CVE-2022-30791

This CVE involves an uncontrolled resource consumption issue in CODESYS V3, affecting multiple versions and products.

What is CVE-2022-30791?

The vulnerability in the CmpBlkDrvTcp of CODESYS V3 allows unauthorized attackers to disrupt TCP connections without affecting existing connections.

The Impact of CVE-2022-30791

The vulnerability poses a high risk to system availability, enabling attackers to block new TCP connections without authentication.

Technical Details of CVE-2022-30791

This section provides details regarding the vulnerability, affected systems, and exploitation mechanism.

Vulnerability Description

In CODESYS V3, the uncontrolled resource consumption flaw in CmpBlkDrvTcp lets attackers block new TCP connections.

Affected Systems and Versions

Various products using CODESYS V3 versions less than V3.5.18.20 and V3.5.18.10 are affected, including CODESYS Control RTE, CODESYS Gateway, and more.

Exploitation Mechanism

Attackers can exploit this vulnerability over the network with low complexity, impacting the availability of the system.

Mitigation and Prevention

Learn how to address and prevent the exploit to enhance system security.

Immediate Steps to Take

Users should update affected CODESYS products to versions above V3.5.18.20 and V3.5.18.10 to mitigate the vulnerability.

Long-Term Security Practices

Implement network security controls and monitoring to detect and prevent unauthorized access to CODESYS systems.

Patching and Updates

Regularly apply security patches and updates for CODESYS products to address vulnerabilities and enhance system security.