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CVE-2021-41090 Detail

Description

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.


Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.
CVSS 4.0 Severity and Vector Strings:

NIST CVSS score
NIST: NVD
N/A
NVD assessment not yet provided.

References to Advisories, Solutions, and Tools

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Hyperlink 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/v0.20.1 Release Notes  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://security.netapp.com/advisory/ntap-20211229-0004/ Third Party Advisory 

Weakness Enumeration

CWE-ID CWE Name Source
CWE-312 Cleartext Storage of Sensitive Information cwe source acceptance level NIST  
CWE-200 Exposure of Sensitive Information to an Unauthorized Actor GitHub, Inc.  

Known Affected Software Configurations Switch to CPE 2.2

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Change History

4 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-41090
NVD Published Date:
12/08/2021
NVD Last Modified:
03/31/2022
Source:
GitHub, Inc.