CVE-2022-35930

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 v3.0 8.8 HIGH

8.8^/10

CVSS v3.0 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/sigstore/policy-controller/commit/e852af36fb7d42678b21d7e97503c25bd1fd05c8	Patch Third Party Advisory
https://github.com/sigstore/policy-controller/security/advisories/GHSA-739f-hw6h-7wq8	Third Party Advisory
https://github.com/sigstore/policy-controller/releases/tag/v0.2.1	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:sigstore:policy_controller:*:*:*:*:*:*:*:*

Information

Published : 2022-08-04 15:15

Updated : 2022-08-11 11:14

NVD link : CVE-2022-35930

Mitre link : CVE-2022-35930

JSON object : View

CWE

CWE-347

Improper Verification of Cryptographic Signature

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Products Affected

sigstore

policy_controller

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