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CVE-2022-2503

6.9 · MEDIUM

Dm-verity is used for extending root-of-trust to root filesystems.

Published Aug 12, 2022CWE-302EPSS 0.42%

Overview

CVE-2022-2503 is a medium-severity vulnerability. It was published on August 12, 2022 and has a CVSS 3.1 base score of 6.9 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.9, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

Dm-verity is used for extending root-of-trust to root filesystems. LoadPin builds on this property to restrict module/firmware loads to just the trusted root filesystem. Device-mapper table reloads currently allow users with root privileges to switch out the target with an equivalent dm-linear target and bypass verification till reboot. This allows root to bypass LoadPin and can be used to load untrusted and unverified kernel modules and firmware, which implies arbitrary kernel execution and persistence for peripherals that do not verify firmware updates. We recommend upgrading past commit 4caae58406f8ceb741603eee460d79bacca9b1b5

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

GitHubgithub.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63mRefsecurity.netapp.com/advisory/ntap-20230214-0005/GitHubgithub.com/google/security-research/security/advisories/GHSA-6vq3-w69p-w63mRefsecurity.netapp.com/advisory/ntap-20230214-0005/

How CyberStrike helps

Frequently asked questions

What is CVE-2022-2503?

CVE-2022-2503 is a medium-severity vulnerability. It was published on August 12, 2022 and has a CVSS 3.1 base score of 6.9 (MEDIUM).

How severe is CVE-2022-2503?

This vulnerability has a CVSS 3.1 base score of 6.9, 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-2022-2503?

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-2022-2503?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-2503 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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