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CVE-2021-41174 Details

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NameCVE-2021-41174
StatusCandidate
DescriptionGrafana 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.
ReferencesCONFIRM: https://security.netapp.com/advisory/ntap-20211125-0003/
CONFIRM: https://github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8
URL: https://github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8
MISC: https://github.com/grafana/grafana/commit/31b78d51c693d828720a5b285107a50e6024c912
URL: https://github.com/grafana/grafana/commit/31b78d51c693d828720a5b285107a50e6024c912
MISC: https://github.com/grafana/grafana/commit/3cb5214fa45eb5a571fd70d6c6edf0d729983f82
URL: https://github.com/grafana/grafana/commit/3cb5214fa45eb5a571fd70d6c6edf0d729983f82
MISC: https://github.com/grafana/grafana/commit/fb85ed691290d211a5baa44d9a641ab137f0de88
URL: https://github.com/grafana/grafana/commit/fb85ed691290d211a5baa44d9a641ab137f0de88
PhaseAssigned (20210915)
VotesNone (candidate not yet proposed)
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