CVE-2021-23842
5.7 · MEDIUMOverview
CVE-2021-23842 is a medium-severity vulnerability affecting bosch amc2_firmware. 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 and patches from bosch. Update amc2_firmware to the latest patched version. 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.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| bosch | access_professional_edition | 0 | Affected |
| bosch | building_integration_system | >= 0, < 4.9.1 | Affected |
Frequently Asked Questions
What is CVE-2021-23842?
CVE-2021-23842 is a medium-severity vulnerability affecting bosch amc2_firmware. 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 and patches from bosch. Update amc2_firmware to the latest patched version. 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's AI-powered security agents can automatically detect CVE-2021-23842 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
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