JWT token disclosure in Grafana

1) Information disclosure

EUVDB-ID: #VU77620

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2023-1387

CWE-ID: CWE-200 - Information exposure

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain access to potentially sensitive information.

The vulnerability exists due to application allows users to login with a JWT token passed in the URL query parameter auth_token. A remote attacker can intercept the query and gain unauthorized access to the application.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Grafana: 9.1.0 - 9.4.7

External links

http://grafana.com/security/security-advisories/cve-2023-1387/
http://github.com/grafana/bugbounty/security/advisories/GHSA-5585-m9r5-p86j

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

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