fkie_cve-2021-41174
Vulnerability from fkie_nvd
Published
2021-11-03 18:15
Modified
2024-11-21 06:25
Severity ?
6.9 (Medium) - CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N
6.1 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Summary
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.
References
security-advisories@github.comhttps://github.com/grafana/grafana/commit/31b78d51c693d828720a5b285107a50e6024c912Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/grafana/grafana/commit/3cb5214fa45eb5a571fd70d6c6edf0d729983f82Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/grafana/grafana/commit/fb85ed691290d211a5baa44d9a641ab137f0de88Patch, Third Party Advisory
security-advisories@github.comhttps://github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8Third Party Advisory
security-advisories@github.comhttps://security.netapp.com/advisory/ntap-20211125-0003/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/grafana/grafana/commit/31b78d51c693d828720a5b285107a50e6024c912Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/grafana/grafana/commit/3cb5214fa45eb5a571fd70d6c6edf0d729983f82Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/grafana/grafana/commit/fb85ed691290d211a5baa44d9a641ab137f0de88Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/grafana/grafana/security/advisories/GHSA-3j9m-hcv9-rpj8Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20211125-0003/Third Party Advisory
Impacted products
Vendor Product Version
grafana grafana *


To clipboard 

{
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      {
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                     matchCriteriaId: "A9B9C101-2003-4213-9B6D-B92CDD6C3370",
                     versionEndExcluding: "8.2.3",
                     versionStartIncluding: "8.0.0",
                     vulnerable: true,
                  },
               ],
               negate: false,
               operator: "OR",
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   ],
   cveTags: [],
   descriptions: [
      {
         lang: "en",
         value: "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.",
      },
      {
         lang: "es",
         value: "Grafana es una plataforma de código abierto para la monitorización y la observabilidad. En las versiones afectadas, si un atacante es capaz de convencer a una víctima de que visite una URL que haga referencia a una página vulnerable, se puede ejecutar contenido JavaScript arbitrario en el contexto del navegador de la víctima. El usuario que visita el enlace malicioso debe no estar autenticado y el enlace debe ser para una página que contenga el botón de inicio de sesión en la barra de menú. La url tiene que estar diseñada para explotar el renderizado de AngularJS y contener el enlace de interpolación para las expresiones de AngularJS. AngularJS utiliza llaves dobles para la interpolación: {{ }} ej: {{constructor.constructor('alert(1)')()}}. Cuando el usuario sigue el enlace y la página se renderiza, el botón de inicio de sesión contendrá el enlace original con un parámetro de consulta para forzar una redirección a la página de inicio de sesión. La URL no se valida y el motor de renderizado de AngularJS ejecutará la expresión JavaScript contenida en la URL. Se recomienda a los usuarios que actualicen lo antes posible. Si por alguna razón no pueden actualizar, pueden utilizar un proxy inverso o similar para bloquear el acceso a la cadena literal {{ en la ruta",
      },
   ],
   id: "CVE-2021-41174",
   lastModified: "2024-11-21T06:25:40.410",
   metrics: {
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            acInsufInfo: false,
            baseSeverity: "MEDIUM",
            cvssData: {
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               accessVector: "NETWORK",
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               availabilityImpact: "NONE",
               baseScore: 4.3,
               confidentialityImpact: "NONE",
               integrityImpact: "PARTIAL",
               vectorString: "AV:N/AC:M/Au:N/C:N/I:P/A:N",
               version: "2.0",
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            exploitabilityScore: 8.6,
            impactScore: 2.9,
            obtainAllPrivilege: false,
            obtainOtherPrivilege: false,
            obtainUserPrivilege: false,
            source: "nvd@nist.gov",
            type: "Primary",
            userInteractionRequired: true,
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      ],
      cvssMetricV31: [
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            cvssData: {
               attackComplexity: "HIGH",
               attackVector: "NETWORK",
               availabilityImpact: "NONE",
               baseScore: 6.9,
               baseSeverity: "MEDIUM",
               confidentialityImpact: "LOW",
               integrityImpact: "HIGH",
               privilegesRequired: "NONE",
               scope: "CHANGED",
               userInteraction: "REQUIRED",
               vectorString: "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:L/I:H/A:N",
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            source: "nvd@nist.gov",
            type: "Primary",
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   published: "2021-11-03T18:15:08.413",
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   vulnStatus: "Modified",
   weaknesses: [
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   ],
}


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