CVE-2022-35930
PolicyController is a utility used to enforce supply chain policy in Kubernetes clusters.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.64%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
PolicyController is a utility used to enforce supply chain policy in Kubernetes clusters. In versions prior to 0.2.1 PolicyController will report a false positive, resulting in an admission when it should not be admitted when there is at least one attestation with a valid signature and there are NO attestations of the type being verified (--type defaults to "custom"). An example image that can be used to test this is `ghcr.io/distroless/static@sha256:dd7614b5a12bc4d617b223c588b4e0c833402b8f4991fb5702ea83afad1986e2`. Users should upgrade to version 0.2.1 to resolve this issue. There are no workarounds for users unable to upgrade.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 0.64% probability · 49th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-347
- Affected
- sigstore/policy controller
- Source
- security-advisories@github.com
References
- https://github.com/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8Patch, Third Party Advisory
- https://github.com/sigstore/policy-controller/releases/tag/v0.2.1Third Party Advisory
- https://github.com/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8Third Party Advisory
- https://github.com/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8Patch, Third Party Advisory
- https://github.com/sigstore/policy-controller/releases/tag/v0.2.1Third Party Advisory
- https://github.com/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8Third Party Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.