Prometheus Node Exporter Exposed Without Authentication
prometheus-node-exporter-exposed is a high severity check in the
monitoring category, written in yaml.
Its source is templates/monitoring/exporters/node/prometheus-node-exporter-exposed.yaml in
cert-x-gen-templates.
What it checks
Section titled “What it checks”Detects exposed Prometheus Node Exporter instances without authentication. Node Exporter exposes detailed system metrics including:
- CPU, memory, disk usage
- Network statistics
- Process information
- System configuration
This information can aid attackers in reconnaissance and system profiling.
Header
Section titled “Header”| Field | Value |
|---|---|
| Id | prometheus-node-exporter-exposed |
| Severity | high |
| Language | yaml |
| Category | monitoring |
| Author | CERT-X-GEN Security Team |
| Template version | not recorded |
| Confidence | not recorded |
| CVSS | not recorded |
| Weakness | not recorded |
| Tags | prometheus, node-exporter, metrics, information-disclosure, monitoring, system-info |
| Target kind | not recorded |
| Oracle | not recorded |
The file declares classification, exposed_metrics_impact, extractors, http, metadata, remediation, severity-details as well. Those are not tabled above; read the
source for what they carry.
References
Section titled “References”Declared in the header. cxg parses @references and then discards it, and
nothing at scan time reads it, so this is the only place the links a
template cites are surfaced.
- https://cwe.mitre.org/data/definitions/200.html
- https://github.com/prometheus/node_exporter
- https://prometheus.io/docs/guides/node-exporter/
- https://prometheus.io/docs/guides/basic-auth/
- https://github.com/prometheus/node_exporter#tls-and-basic-authentication
- https://prometheus.io/docs/prometheus/latest/configuration/https/
Run it
Section titled “Run it”To see what the copy on your machine says about itself, and to confirm it is installed at all:
cxg template info prometheus-node-exporter-exposedThe id it prints is the one to pass anywhere a template is selected. See
cxg template for the rest of
the subcommand, Scan a target for running
a scan, and
A match is not a finding for how
to read what comes back.
Related
Section titled “Related”- Template catalog is the whole corpus.
- monitoring is the rest of this category.
- Contribute a template is the route from a check you needed and could not find to a merged one.