CVE-2022-35930 json
Ability to bypass attestation verification in sigstore PolicyController
published 2022-08-04 4 y ago modified 2026-09-10 1 mo ago also GHSA-739f-hw6h-7wq8 , GO-2022-0759 , EUVD-2022-6496
- cvss
- 7.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- go github.com/sigstore/policy-controller 0.2.1
- sigstore policy_controller 0.2.1
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 18 mo ago
Exploit prediction
0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H |
| NVD | 3.1 | 8.8 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| GitHub | 3.1 | 7.1 | CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/sigstore/policy-controller | <0.2.1 |
0.2.1 |
Affected products
- sigstore policy-controller
Classification
- Weakness
-
- CWE-347 Improper Verification of Cryptographic Signature
References
-
github.com
/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8
web, patch, third-party-advisory
-
github.com
/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8
web, third-party-advisory, advisory
-
github.com
/sigstore/policy-controller/releases/tag/v0.2.1
web, third-party-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2022-35930
advisory
-
github.com
/sigstore/policy-controller
package
Sources
- CVE List CVE-2022-35930
- GitHub Advisory GHSA-739f-hw6h-7wq8
- NVD CVE-2022-35930
- OSV GO-2022-0759
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.