CVE-2021-43815

Grafana directory traversal for `.cvs` files

Severity Score

4.3

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

Grafana is an open-source platform for monitoring and observability. Grafana prior to versions 8.3.2 and 7.5.12 has a directory traversal for arbitrary .csv files. It only affects instances that have the developer testing tool called TestData DB data source enabled and configured. The vulnerability is limited in scope, and only allows access to files with the extension .csv to authenticated users only. Grafana Cloud instances have not been affected by the vulnerability. Versions 8.3.2 and 7.5.12 contain a patch for this issue. There is a workaround available for users who cannot upgrade. Running a reverse proxy in front of Grafana that normalizes the PATH of the request will mitigate the vulnerability. The proxy will have to also be able to handle url encoded paths.

Grafana es una plataforma de código abierto para la monitorización y la observabilidad. Grafana versiones anteriores a 8.3.2 y 7.5.12, presenta un salto de directorios para archivos .csv arbitrarios. Sólo afecta a las instancias que tienen habilitada y configurada la herramienta de pruebas para desarrolladores llamada fuente de datos TestData DB. La vulnerabilidad presenta un alcance limitado y sólo permite el acceso a los archivos con la extensión .csv a usuarios autenticados. Las instancias de Grafana Cloud no se han visto afectadas por la vulnerabilidad. Las versiones 8.3.2 y 7.5.12 contienen un parche para este problema. Se presenta una solución disponible para usuarios que no pueden actualizar. Ejecutar un proxy inverso frente a Grafana que normalice el PATH de la petición mitigará la vulnerabilidad. El proxy también tendrá que ser capaz de manejar rutas codificadas con url

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

Low

Integrity

None

Availability

None

Attack Vector

Network

Attack Complexity

Medium

Authentication

Single

Confidentiality

Partial

Integrity

None

Availability

None

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-11-16 CVE Reserved
2021-12-10 CVE Published
2023-07-03 EPSS Updated
2024-08-04 CVE Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CAPEC

References (7)

URL	Tag	Source
https://github.com/grafana/grafana/releases/tag/v8.3.2	Release Notes
https://security.netapp.com/advisory/ntap-20220107-0006	Third Party Advisory

URL	Date	SRC

URL	Date	SRC
http://www.openwall.com/lists/oss-security/2021/12/10/4	2022-03-31
https://github.com/grafana/grafana/commit/d6ec6f8ad28f0212e584406730f939105ff6c6d3	2022-03-31
https://github.com/grafana/grafana/commit/fd48aee61e4328aae8d5303a9efd045fa0ca308d	2022-03-31
https://github.com/grafana/grafana/security/advisories/GHSA-7533-c8qv-jm9m	2022-03-31
https://grafana.com/blog/2021/12/10/grafana-8.3.2-and-7.5.12-released-with-moderate-severity-security-fix	2022-03-31

URL	Date	SRC

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Grafana Search vendor "Grafana"		Grafana Search vendor "Grafana" for product "Grafana"				< 7.5.12 Search vendor "Grafana" for product "Grafana" and version " < 7.5.12"		-		Affected
Grafana Search vendor "Grafana"		Grafana Search vendor "Grafana" for product "Grafana"				>= 8.0.0 < 8.3.2 Search vendor "Grafana" for product "Grafana" and version " >= 8.0.0 < 8.3.2"		-		Affected