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CVE-2020-9307

6.5 · MEDIUM

Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 allow a denial of service.

Published Feb 11, 2021CWE-835EPSS 0.59%

Overview

CVE-2020-9307 is a medium-severity vulnerability. It was published on February 11, 2021 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Hirschmann OS2, RSP, and RSPE devices before HiOS 08.3.00 allow a denial of service. An unauthenticated, adjacent attacker can cause an infinite loop on one of the HSR ring ports of the device. This effectively breaks the redundancy of the HSR ring. If the attacker can perform the same attack on a second device, the ring is broken into two parts (thus disrupting communication between devices in the different parts).

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refwww.belden.com/dfsmedia/f1e38517e0cd4caa8b1acb6619890f5e/12276-source/options/viewRefwww.belden.com/securityRefwww.belden.com/dfsmedia/f1e38517e0cd4caa8b1acb6619890f5e/12276-source/options/viewRefwww.belden.com/security

How CyberStrike helps

Frequently asked questions

What is CVE-2020-9307?

CVE-2020-9307 is a medium-severity vulnerability. It was published on February 11, 2021 and has a CVSS 3.1 base score of 6.5 (MEDIUM).

How severe is CVE-2020-9307?

This vulnerability has a CVSS 3.1 base score of 6.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-9307?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-9307?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-9307 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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