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CVE-2021-23842

5.7 · MEDIUM

Communication to the AMC2 uses a state-of-the-art cryptographic algorithm for symmetric encryption called Blowfish.

Published Jan 19, 2022CWE-321EPSS 0.14%

Overview

CVE-2021-23842 is a medium-severity vulnerability. It was published on January 19, 2022 and has a CVSS 3.1 base score of 5.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.7, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Communication to the AMC2 uses a state-of-the-art cryptographic algorithm for symmetric encryption called Blowfish. An attacker could retrieve the key from the firmware to decrypt network traffic between the AMC2 and the host system. Thus, an attacker can exploit this vulnerability to decrypt and modify network traffic, decrypt and further investigate the device\'s firmware file, and change the device configuration. The attacker needs to have access to the local network, typically even the same subnet.

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

Refpsirt.bosch.com/security-advisories/BOSCH-SA-940448-BT.htmlRefpsirt.bosch.com/security-advisories/BOSCH-SA-940448-BT.html

How CyberStrike helps

Frequently asked questions

What is CVE-2021-23842?

CVE-2021-23842 is a medium-severity vulnerability. It was published on January 19, 2022 and has a CVSS 3.1 base score of 5.7 (MEDIUM).

How severe is CVE-2021-23842?

This vulnerability has a CVSS 3.1 base score of 5.7, 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-2021-23842?

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-2021-23842?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-23842 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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