CVE-2021-22731 Explained : Impact and Mitigation

A Weak Password Recovery Mechanism for Forgotten Password vulnerability has been identified in Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior versions, allowing unauthorized password changes by remote attackers.

Understanding CVE-2021-22731

This CVE highlights a critical security flaw in the password recovery mechanism of the affected Modicon Managed Switch devices.

What is CVE-2021-22731?

The vulnerability in CVE-2021-22731 pertains to a weak password recovery mechanism for forgotten passwords in Modicon Managed Switch MCSESM* and MCSESP* V8.21 and earlier versions. This flaw enables malicious actors to change passwords without proper authorization if they possess basic user information.

The Impact of CVE-2021-22731

The impact of this vulnerability is significant as it allows remote attackers to exploit weak password recovery mechanisms within affected Modicon Managed Switch devices. This could lead to unauthorized password changes through HTTP/HTTPS connections.

Technical Details of CVE-2021-22731

This section provides insight into the specific technical aspects of CVE-2021-22731.

Vulnerability Description

The Weak Password Recovery Mechanism for Forgotten Password vulnerability in Modicon Managed Switch MCSESM* and MCSESP* V8.21 and earlier allows remote attackers to change passwords without proper authorization when possessing basic user information.

Affected Systems and Versions

CVE-2021-22731 affects Modicon Managed Switch MCSESM* and MCSESP* V8.21 and prior versions.

Exploitation Mechanism

The vulnerability can be exploited by remote attackers who have access to basic user information, enabling them to change passwords through HTTP/HTTPS connections.

Mitigation and Prevention

To address CVE-2021-22731, immediate steps should be taken to enhance the security of affected systems and prevent unauthorized access.

Immediate Steps to Take

It is recommended to implement strong password policies, restrict access to critical systems, and monitor for any unauthorized password changes.

Long-Term Security Practices

Organizations should regularly update and patch Modicon Managed Switch devices, conduct security training for users, and enforce multi-factor authentication to mitigate similar vulnerabilities.

Patching and Updates

Ensure that the latest security patches and updates are applied to Modicon Managed Switch MCSESM* and MCSESP* devices to address the Weak Password Recovery Mechanism for Forgotten Password vulnerability.