Path traversal in Grafana

1) Path traversal

EUVDB-ID: #VU64400

Risk: Medium

CVSSv3.1: 5.9 [CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C]

CVE-ID: CVE-2022-32275

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

Exploit availability: Yes

Description

The vulnerability allows a remote user to perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences. A remote user can send a specially crafted HTTP request and read arbitrary files on the system.

Exploitation example:
/dashboard/snapshot/%7B%7Bconstructor.constructor'/.. /.. /.. /.. /.. /.. /.. /.. /etc/passwd

Mitigation

Install update from vendor's website.

Vulnerable software versions

Grafana: 8.4.3

External links

http://github.com/BrotherOfJhonny/grafana/blob/main/README.md
http://github.com/grafana/grafana/issues/50336

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. However, proof of concept for this vulnerability is available.