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.

Severity

 

CVSS Version 3.x CVSS Version 2.0

CVSS 3.x Severity and Metrics:

NIST: NVD

Base Score:  7.5 HIGH

Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CNA:  GitHub, Inc.

Base Score:  6.5 MEDIUM

Vector:  CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: It is possible that the NVD CVSS may not match that of the CNA. The most common reason for this is that publicly available information does not provide sufficient detail or that information simply was not available at the time the CVSS vector string was assigned.

CVSS 2.0 Severity and Metrics:

NIST: NVD

Base Score:  4.3 MEDIUM

Vector:  (AV:N/AC:M/Au:N/C:P/I:N/A:N)

NVD Analysts use publicly available information to associate vector strings and CVSS scores. We also display any CVSS information provided within the CVE List from the CNA.

Note: NVD Analysts have published a CVSS score for this CVE based on publicly available information at the time of analysis. The CNA has not provided a score within the CVE List.

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	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

3 change records found show changes

Modified Analysis by NIST 3/31/2022 12:30:42 PM

Action	Type	Old Value	New Value
Added	CWE		NIST CWE-312
Changed	Reference Type	https://security.netapp.com/advisory/ntap-20211229-0004/ No Types Assigned	https://security.netapp.com/advisory/ntap-20211229-0004/ Third Party Advisory

CVE Modified by GitHub, Inc. 12/29/2021 4:15:07 PM

Action	Type	Old Value	New Value
Added	Reference		https://security.netapp.com/advisory/ntap-20211229-0004/ [No Types Assigned]

Initial Analysis by NIST 12/13/2021 11:17:00 AM

Action	Type	Old Value	New Value
Added	CPE Configuration		OR *cpe:2.3:a:grafana:agent:*:*:*:*:*:*:*:* versions from (including) 0.14.0 up to (excluding) 0.20.1 *cpe:2.3:a:grafana:agent:*:*:*:*:*:*:*:* versions from (including) 0.21.0 up to (excluding) 0.21.2
Added	CVSS V2		NIST (AV:N/AC:M/Au:N/C:P/I:N/A:N)
Added	CVSS V3.1		NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Changed	Reference Type	https://github.com/grafana/agent/commit/af7fb01e31fe2d389e5f1c36b399ddc46b412b21 No Types Assigned	https://github.com/grafana/agent/commit/af7fb01e31fe2d389e5f1c36b399ddc46b412b21 Patch, Third Party Advisory
Changed	Reference Type	https://github.com/grafana/agent/pull/1152 No Types Assigned	https://github.com/grafana/agent/pull/1152 Patch, Third Party Advisory
Changed	Reference Type	https://github.com/grafana/agent/releases/tag/v0.20.1 No Types Assigned	https://github.com/grafana/agent/releases/tag/v0.20.1 Release Notes, Third Party Advisory
Changed	Reference Type	https://github.com/grafana/agent/releases/tag/v0.21.2 No Types Assigned	https://github.com/grafana/agent/releases/tag/v0.21.2 Release Notes, Third Party Advisory
Changed	Reference Type	https://github.com/grafana/agent/security/advisories/GHSA-9c4x-5hgq-q3wh No Types Assigned	https://github.com/grafana/agent/security/advisories/GHSA-9c4x-5hgq-q3wh Third Party Advisory