CVE-2021-41174

Name
CVE-2021-41174
Description
Grafana is an open-source platform for monitoring and observability. 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. The user visiting the malicious link must be unauthenticated and the link must be for a page that contains the login button in the menu bar. The url has to be crafted to exploit AngularJS rendering and contain the interpolation binding for AngularJS expressions. AngularJS uses double curly braces for interpolation binding: {{ }} ex: {{constructor.constructor(‘alert(1)’)()}}. When the user follows the link and the page renders, the login button will contain the original link with a query parameter to force a redirect to the login page. The URL is not validated and the AngularJS rendering engine will execute the JavaScript expression contained in the URL. Users are advised to upgrade as soon as possible. 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.
NVD Severity
medium
Other trackers
Mailing lists
Exploits
Forges
GitHub (code, issues), Aports (code, issues)

References

Type URI
MISC https://github.com/grafana/grafana/commit/3cb5214fa45eb5a571fd70d6c6edf0d729983f82
MISC https://github.com/grafana/grafana/commit/31b78d51c693d828720a5b285107a50e6024c912
MISC https://github.com/grafana/grafana/commit/fb85ed691290d211a5baa44d9a641ab137f0de88
CONFIRM https://github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8
Third Party Advisory https://security.netapp.com/advisory/ntap-20211125-0003/

Match rules

CPE URI Source package Min version Max version
cpe:2.3:a:grafana:grafana:*:*:*:*:*:*:*:* grafana >= 8.0.0 < 8.2.3

Vulnerable and fixed packages

Source package Branch Version Maintainer Status