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osvGoogleOSV:CVE-2022-35930
HistoryAug 04, 2022 - 10:15 p.m.

CVE-2022-35930

2022-08-0422:15:08
Google
osv.dev
2
cve-2022-35930
policycontroller
kubernetes
supply chain policy
false positive admission
security risk
upgrade
attestation
signature
attestation types

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.7 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

55.9%

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.

8.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

6.7 Medium

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

55.9%

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