QID 730253

Date Published: 2021-11-16

QID 730253: Grafana Enterprise Cross-Site Scripting (XSS) Vulnerability

Grafana is an open-source, general purpose dashboard and graph composer, which runs as a web application.

Affected By Below Vulnerabilies:
CVE-2021-41174: In affected versions if an attacker is able to convince a victim to visit a URL referencing a vulnerable page, arbitrary JavaScript content may be executed within the context of the victim's browser.

Affected Versions:
Grafana Version 8.0.0-beta1 to 8.2.2

QID Detection Logic (Unauthenticated):
This QID checks for vulnerable version of Grafana Enterprise from the server response

Successful exploitation could allows an unauthenticated remote attacker to trigger a Cross-Site Scripting attack.

CVSS V3 rated as High - 6.1 severity.

CVSS V2 rated as Medium - 4.3 severity.

Solution

Customers are advised to download Grafana Enterprise 8.2.3 to fix this vulnerability.
Workaround:

If for some reason you cannot upgrade, you can use a reverse proxy or similar to block access to block the literal string {{ in the path.
Example of an Nginx rule to block the literal string {{:

location ~ \{\{ {
deny all;
}

Vendor References

Grafana Release Note 8.2.3 - github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8

CVEs related to QID 730253

CVE-2021-41174 |

Software Advisories

Advisory ID	Software	Component	Link
Grafana Release Note 8.2.3			github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8

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