CVE-2022-25020

What it actually does

The vulnerability permits an attacker to bypass intended access controls or inject malicious content into Prometheus configuration or admission decisions within the affected operator and webhook components.

Why it matters to the business

Organizations running monitoring infrastructure face potential tampering with metrics pipelines or unauthorized cluster changes, increasing risk of undetected system issues or compliance violations; low exploit prevalence reduces immediate urgency but requires prompt patching of all listed packages.

How an attack unfolds

An attacker identifies an exposed prometheus-admission-webhook or config-reloader instance, crafts a malicious request or configuration payload that exploits the flaw to alter scrape targets or inject rules, then uses the modified setup to exfiltrate data or pivot within the environment.

How to fix it

Upgrade all affected Chainguard and Wolfi packages to the versions fixed in 0.72.0-r1; verify no older images remain in registries or running deployments; apply network segmentation to limit exposure of webhook endpoints until patched.

How to confirm the fix worked

Confirm running container images report version 0.72.0-r1 or newer via image inspection or pod spec checks; re-test admission webhook behavior against known malicious payloads after upgrade.

Typical attack path

1. Scan for publicly reachable prometheus-operator or admission-webhook endpoints
2. Submit crafted configuration or admission request exploiting the flaw
3. Achieve modification of Prometheus scrape jobs or alert rules
4. Leverage altered monitoring to mask follow-on activity or collect sensitive metrics

How to detect it

Review admission webhook logs and config-reloader audit trails for unexpected configuration changes; search Kubernetes audit logs for anomalous updates to Prometheus custom resources originating from the webhook service account.

What your security team should do

• Immediately inventory all deployments of the listed prometheus packages and schedule upgrades to 0.72.0-r1
• Add package version checks to CI/CD pipelines to prevent reintroduction of vulnerable images
• Monitor EPSS trend and revisit if score increases; treat as medium priority given low current exploitation likelihood