CVE-2022-41939

Summary

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.

Affected Software

Weaknesses

• CWE-200: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor

ADP Enrichment

CVE Program Container

Additional References

• https://github.com/knative/func/security/advisories/GHSA-5336-2g3f-9g3m
• https://github.com/knative/func/pull/1442
• https://github.com/knative/func/blob/5ca77d38744d3481cc0b795f607c5859b19588fc/buildpacks/builder.go#L37-L41
• https://github.com/knative/func/releases/tag/knative-v1.8.1

CISA ADP Vulnrichment

• SSVC:
• Exploitation: poc
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/knative/func/security/advisories/GHSA-5336-2g3f-9g3m
• https://github.com/knative/func/pull/1442
• https://github.com/knative/func/blob/5ca77d38744d3481cc0b795f607c5859b19588fc/buildpacks/builder.go#L37-L41
• https://github.com/knative/func/releases/tag/knative-v1.8.1

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