Information disclosure in Knative Func
CVE-2022-41939
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.
Vulnerability class: Information Disclosure
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:N/A:N.
EPSS exploit prediction
EPSS: 0.010 (60.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 60th percentile — 60.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.010 · change: +0.000
Affected products
- Knative Func — versions < 1.8.1
- Linuxfoundation Knative Func
Weakness classification (CWE)
References
- github.com/knative/func/security/advisories/GHSA-5336-2g3f-9g3m (Exploit, Patch, Third Party Advisory)
- github.com/knative/func/pull/1442 (Patch, Third Party Advisory)
- github.com/knative/func/blob/5ca77d38744d3481cc0b795f607c5859b19588fc/buildpack… (Third Party Advisory)
- github.com/knative/func/releases/tag/knative-v1.8.1 (Third Party Advisory, Release Notes)
Frequently asked questions
- What is CVE-2022-41939?
- CVE-2022-41939 is a medium-severity vulnerability in Knative Func, classified under Information Disclosure. CVSS score: 6.1/10. Published 2022-11-19.
- How severe is CVE-2022-41939?
- Medium severity. CVSS v3 base score is 6.1 out of 10.