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CVE-2022-21499

6.7 · MEDIUM

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown.

Published Jun 9, 2022CWE-787EPSS 0.62%

Overview

CVE-2022-21499 is a medium-severity vulnerability. It was published on June 9, 2022 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

KGDB and KDB allow read and write access to kernel memory, and thus should be restricted during lockdown. An attacker with access to a serial port could trigger the debugger so it is important that the debugger respect the lockdown mode when/if it is triggered. CVSS 3.1 Base Score 6.7 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H).

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

Refpacketstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.htmlRefgit.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066Refwww.debian.org/security/2022/dsa-5161Refpacketstormsecurity.com/files/168191/Kernel-Live-Patch-Security-Notice-LSN-0089-1.htmlRefgit.kernel.org/linus/eadb2f47a3ced5c64b23b90fd2a3463f63726066Refwww.debian.org/security/2022/dsa-5161

How CyberStrike helps

Frequently asked questions

What is CVE-2022-21499?

CVE-2022-21499 is a medium-severity vulnerability. It was published on June 9, 2022 and has a CVSS 3.1 base score of 6.7 (MEDIUM).

How severe is CVE-2022-21499?

This vulnerability has a CVSS 3.1 base score of 6.7, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2022-21499?

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-2022-21499?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-21499 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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