5.3
CVSSv3

CVE-2021-43979

Published: 17/11/2021 Updated: 17/05/2024
CVSS v2 Base Score: 5 | Impact Score: 2.9 | Exploitability Score: 10
CVSS v3 Base Score: 5.3 | Impact Score: 1.4 | Exploitability Score: 3.9
Vector: AV:N/AC:L/Au:N/C:N/I:P/A:N

Vulnerability Summary

Styra Open Policy Agent (OPA) Gatekeeper up to and including 3.7.0 mishandles concurrency, sometimes resulting in incorrect access control. The data replication mechanism allows policies to access the Kubernetes cluster state. During data replication, OPA/Gatekeeper does not wait for the replication to finish before processing a request, which might cause inconsistencies between the replicated resources in OPA/Gatekeeper and the resources actually present in the cluster. Inconsistency can later be reflected in a policy bypass. NOTE: the vendor disagrees that this is a vulnerability, because Kubernetes states are only eventually consistent

Vulnerability Trend

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openpolicyagent gatekeeper