CVE-2021-43979 - CVE House
Back to Database
Status published Medium CVE-2021-43979

Styra Open Policy Agent (OPA) Gatekeeper through 3.7.0 mishandles concurrency,...

Vulnerability Description

Styra Open Policy Agent (OPA) Gatekeeper through 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

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

THREAT MONITOR

Am I Vulnerable?

Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-43979

Credits & Attribution

No credits recorded in the NVD database.

References

More from openpolicyagent

View All →
CVE-2022-33082
An issue in the AST parser (ast/compile.go) of Open Policy...
High 7.5
CVE-2022-28946
An issue in the component ast/parser.go of Open Policy Agent...
High 7.5

Affected Vendor

openpolicyagent

View all reports →

Affected Software

gatekeeper
Vulnerable Versions:
0

Timeline

Official Publish: November 17th, 2021
Last Modified: August 4th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.