CVE-2019-6584 : Exploit Details and Defense Strategies

A security flaw has been discovered in SIEMENS LOGO!8 devices, potentially allowing attackers to maintain access even after a user logs out.

Understanding CVE-2019-6584

What is CVE-2019-6584?

CVE-2019-6584 is a vulnerability found in SIEMENS LOGO!8 devices due to the failure of the integrated webserver to invalidate Session IDs upon user logout.

The Impact of CVE-2019-6584

This vulnerability could be exploited by attackers in a privileged network position, enabling them to retain access by utilizing valid Session IDs.

Technical Details of CVE-2019-6584

Vulnerability Description

The flaw allows attackers to maintain access post-user logout by exploiting valid Session IDs.

Affected Systems and Versions

SIEMENS LOGO!8 (6ED1052-xyyxx-0BA8 FS:01 to FS:06 / Firmware version V1.80.xx and V1.81.xx)
SIEMENS LOGO!8 (6ED1052-xyy08-0BA0 FS:01 / Firmware version < V1.82.02)

Exploitation Mechanism

Attackers in a privileged network position can monitor communication to obtain valid Session IDs.

Mitigation and Prevention

Immediate Steps to Take

Monitor for any unauthorized access or unusual activities on the affected devices.
Implement network segmentation to restrict access to critical systems.

Long-Term Security Practices

Regularly update firmware and software to patch known vulnerabilities.
Conduct security training to educate users on best practices.

Patching and Updates

Apply the latest firmware updates provided by Siemens to address this vulnerability.