CVE-2022-35957

Authentication Bypass in Grafana via auth proxy allowing escalation from admin to server admin

Severity Score

6.6

*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. Versions prior to 9.1.6 and 8.5.13 are vulnerable to an escalation from admin to server admin when auth proxy is used, allowing an admin to take over the server admin account and gain full control of the grafana instance. All installations should be upgraded as soon as possible. As a workaround deactivate auth proxy following the instructions at: https://grafana.com/docs/grafana/latest/setup-grafana/configure-security/configure-authentication/auth-proxy/

Grafana es una plataforma de código abierto para la monitorización y la observabilidad. Las versiones anteriores a 9.1.6 y 8.5.13, son vulnerables a una escalada de admin a server admin cuando es usado auth proxy, lo que permite a un admin tomar la cuenta de server admin y obtener el control total de la instancia de grafana. Todas las instalaciones deben ser actualizadas tan pronto como sea posible. Como mitigación, desactive el proxy de autenticación siguiendo las instrucciones en: https://grafana.com/docs/grafana/latest/setup-grafana/configure-security/configure-authentication/auth-proxy/

A flaw was found in the grafana package. Auth proxy allows authentication of a user by only providing the username (or email) in an X-WEBAUTH-USER HTTP header. The trust assumption is that a front proxy will take care of authentication and that the Grafana server is only publicly reachable with this front proxy.

*Credits: N/A

CVSS Scores

NISTv3.1 6.6

Attack Vector

Network

Attack Complexity

High

Privileges Required

High

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2022-07-15 CVE Reserved
2022-09-20 CVE Published
2024-08-03 CVE Updated
2024-08-06 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CWE-288: Authentication Bypass Using an Alternate Path or Channel
CWE-290: Authentication Bypass by Spoofing

CAPEC

References (5)

URL	Tag	Source
https://security.netapp.com/advisory/ntap-20221215-0001	Third Party Advisory

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://github.com/grafana/grafana/security/advisories/GHSA-ff5c-938w-8c9q	2023-11-07
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WYU5C2RITLHVZSTCWNGQWA6KSPYNXM2H	2023-11-07
https://access.redhat.com/security/cve/CVE-2022-35957	2023-06-15
https://bugzilla.redhat.com/show_bug.cgi?id=2125514	2023-06-15

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"				< 8.5.13 Search vendor "Grafana" for product "Grafana" and version " < 8.5.13"		-		Affected
Grafana Search vendor "Grafana"		Grafana Search vendor "Grafana" for product "Grafana"				>= 9.0.0 < 9.0.9 Search vendor "Grafana" for product "Grafana" and version " >= 9.0.0 < 9.0.9"		-		Affected
Grafana Search vendor "Grafana"		Grafana Search vendor "Grafana" for product "Grafana"				>= 9.1.0 < 9.1.6 Search vendor "Grafana" for product "Grafana" and version " >= 9.1.0 < 9.1.6"		-		Affected
Fedoraproject Search vendor "Fedoraproject"		Fedora Search vendor "Fedoraproject" for product "Fedora"				37 Search vendor "Fedoraproject" for product "Fedora" and version "37"		-		Affected