#VU51581 Improper access control in Grafana - CVE-2021-28147

Vulnerability identifier: #VU51581

Vulnerability risk: Medium

CVSSv4.0: 1.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2021-28147

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
Grafana
Web applications / Other software

Vendor: Grafana Labs

Description

The vulnerability allows a remote user to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions, when editorsCanAdmin  feature is enabled. A remote user can bypass implemented security restrictions and add external group members to existing teams.

Mitigation
Install updates from vendor's website.

Vulnerable software versions

Grafana: 6.1.0 - 6.1.6, 6.2.0 - 6.2.5, 6.3.0 - 6.3.7, 6.4.0 - 6.4.5, 6.5 - 6.5.3, 6.6.0 - 6.6.2, 6.7.0 - 6.7.5, 7.0.0 - 7.0.6, 7.1.0 - 7.1.5, 7.2.0 - 7.2.3, 7.3.0 - 7.3.7, 7.4.0 - 7.4.3

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External links
http://grafana.com/blog/2021/03/18/grafana-6.7.6-7.3.10-and-7.4.5-released-with-important-security-fixes-for-grafana-enterprise/

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.