CVE-2021-43979

Styra Open Policy Agent (OPA) Gatekeeper through 3.7.0 mishandles concurrency, sometimes resulting in incorrect access control

published November 17, 2021

CVSS
—
EPSS
1%
Percentile
64.1
In the wild
Unconfirmed
What it is

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

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.01052 · 64.1th percentile
Published
2021-11-17T18:26Z
EPSS history
Timeline
  • 17 NOV 18:26Z
    Styra Open Policy Agent (OPA) Gatekeeper through 3.7.0 mishandles concurrency, sometimes resulting in incorrect access control
    cvelistv5