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CVE-2022-41939

6.1 · MEDIUM

knative.dev/func is is a client library and CLI enabling the development and deployment of Kubernetes functions.

Published Nov 19, 2022CWE-200EPSS 0.96%

Overview

CVE-2022-41939 is a medium-severity vulnerability. It was published on November 19, 2022 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

knative.dev/func is is a client library and CLI enabling the development and deployment of Kubernetes functions. Developers using a malicious or compromised third-party buildpack could expose their registry credentials or local docker socket to a malicious `lifecycle` container. This issues has been patched in PR #1442, and is part of release 1.8.1. This issue only affects users who are using function buildpacks from third-parties; pinning the builder image to a specific content-hash with a valid `lifecycle` image will also mitigate the attack.

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/knative/func/blob/5ca77d38744d3481cc0b795f607c5859b19588fc/buildpacks/builder.go#L37-L41GitHubgithub.com/knative/func/pull/1442GitHubgithub.com/knative/func/releases/tag/knative-v1.8.1GitHubgithub.com/knative/func/security/advisories/GHSA-5336-2g3f-9g3mGitHubgithub.com/knative/func/blob/5ca77d38744d3481cc0b795f607c5859b19588fc/buildpacks/builder.go#L37-L41GitHubgithub.com/knative/func/pull/1442GitHubgithub.com/knative/func/releases/tag/knative-v1.8.1GitHubgithub.com/knative/func/security/advisories/GHSA-5336-2g3f-9g3m

How CyberStrike helps

Frequently asked questions

What is CVE-2022-41939?

CVE-2022-41939 is a medium-severity vulnerability. It was published on November 19, 2022 and has a CVSS 3.1 base score of 6.1 (MEDIUM).

How severe is CVE-2022-41939?

This vulnerability has a CVSS 3.1 base score of 6.1, rated MEDIUM. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2022-41939?

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-2022-41939?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2022-41939 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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