CVE-2020-9307 : Vulnerability Insights and Analysis
Learn about CVE-2020-9307 affecting Hirschmann OS2, RSP, and RSPE devices. Find out how an attacker can disrupt communication between devices and steps to mitigate the vulnerability.
Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 are vulnerable to a denial of service attack that can disrupt communication between devices.
Understanding CVE-2020-9307
What is CVE-2020-9307?
CVE-2020-9307 is a vulnerability in Hirschmann devices that allows an unauthenticated attacker to disrupt the redundancy of the HSR ring, potentially breaking communication between devices.
The Impact of CVE-2020-9307
The vulnerability can lead to a denial of service, breaking the HSR ring into two parts and disrupting communication between devices.
Technical Details of CVE-2020-9307
Vulnerability Description
- Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 are susceptible to a denial of service attack.
Affected Systems and Versions
- Affected systems: Hirschmann OS2, RSP, and RSPE devices
- Vulnerable versions: Before HiOS 08.3.00
Exploitation Mechanism
- An unauthenticated, adjacent attacker can cause an infinite loop on one of the HSR ring ports, breaking the redundancy of the HSR ring.
Mitigation and Prevention
Immediate Steps to Take
- Update affected devices to HiOS 08.3.00 or later.
- Implement network segmentation to limit the impact of potential attacks.
Long-Term Security Practices
- Regularly monitor network traffic for any anomalies or suspicious activities.
- Conduct security training for personnel to recognize and respond to potential threats.
Patching and Updates
- Stay informed about security updates and patches released by Hirschmann to address this vulnerability.