CVE Vulnerability

CVE-2021-41090

Grafana Agent is a telemetry collector for sending metrics, logs, and trace data to the opinionated Grafana observability stack. Prior to versions 0.20.1 and 0.21.2, inline secrets defined within a metrics instance config are exposed in plaintext over two endpoints: metrics instance configs defined in the base YAML file are exposed at `/-/config` and metrics instance configs defined for the scraping service are exposed at `/agent/api/v1/configs/:key`. Inline secrets will be exposed to anyone being able to reach these endpoints. If HTTPS with client authentication is not configured, these endpoints are accessible to unauthenticated users. Secrets found in these sections are used for delivering metrics to a Prometheus Remote Write system, authenticating against a system for discovering Prometheus targets, and authenticating against a system for collecting metrics. This does not apply for non-inlined secrets, such as `*_file` based secrets. This issue is patched in Grafana Agent versions 0.20.1 and 0.21.2. A few workarounds are available. Users who cannot upgrade should use non-inline secrets where possible. Users may also desire to restrict API access to Grafana Agent with some combination of restricting the network interfaces Grafana Agent listens on through `http_listen_address` in the `server` block, configuring Grafana Agent to use HTTPS with client authentication, and/or using firewall rules to restrict external access to Grafana Agent's API.

4.3 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 2.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

Scope

7.5 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/grafana/agent/commit/af7fb01e31fe2d389e5f1c36b399ddc46b412b21 Patch Third Party Advisory
https://github.com/grafana/agent/pull/1152 Patch Third Party Advisory
https://github.com/grafana/agent/releases/tag/v0.21.2 Release Notes Third Party Advisory
https://github.com/grafana/agent/security/advisories/GHSA-9c4x-5hgq-q3wh Third Party Advisory
https://github.com/grafana/agent/releases/tag/v0.20.1 Release Notes Third Party Advisory
https://security.netapp.com/advisory/ntap-20211229-0004/ Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:grafana:agent:*:*:*:*:*:*:*:*
cpe:2.3:a:grafana:agent:*:*:*:*:*:*:*:*
Information

Published : 2021-12-08 05:15

Updated : 2022-03-31 04:30

NVD link : CVE-2021-41090

Mitre link : CVE-2021-41090

Products Affected
No products.
CWE
CWE-312

Cleartext Storage of Sensitive Information