{
  "id": "CVE-2021-39156",
  "sourceIdentifier": "security-advisories@github.com",
  "published": "2021-08-24T23:15:10.413",
  "lastModified": "2022-08-12T18:01:20.450",
  "vulnStatus": "Analyzed",
  "descriptions": [
    {
      "lang": "en",
      "value": "Istio is an open source platform for providing a uniform way to integrate microservices, manage traffic flow across microservices, enforce policies and aggregate telemetry data. Istio 1.11.0, 1.10.3 and below, and 1.9.7 and below contain a remotely exploitable vulnerability where an HTTP request with `#fragment` in the path may bypass Istio\u00e2\u20ac\u2122s URI path based authorization policies. Patches are available in Istio 1.11.1, Istio 1.10.4 and Istio 1.9.8. As a work around a Lua filter may be written to normalize the path."
    },
    {
      "lang": "es",
      "value": "Istio es una plataforma de c\u00f3digo abierto que proporciona una forma uniforme de integrar microservicios, administrar el flujo de tr\u00e1fico entre microservicios, aplicar pol\u00edticas y agregar datos de telemetr\u00eda. Istio versiones 1.11.0, 1.10.3 y por debajo, y versiones 1.9.7 y por debajo, contienen una vulnerabilidad explotable de forma remota en la que una petici\u00f3n HTTP con el par\u00e1metro \"#fragment\" en la ruta puede omitir las pol\u00edticas de autorizaci\u00f3n basadas en la ruta URI de Istio. Los parches est\u00e1n disponibles en Istio versi\u00f3n 1.11.1, Istio versi\u00f3n 1.10.4 e Istio versi\u00f3n 1.9.8. Como soluci\u00f3n, puede escribirse un filtro Lua para normalizar la ruta."
    }
  ],
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          "attackVector": "NETWORK",
          "attackComplexity": "LOW",
          "privilegesRequired": "NONE",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "availabilityImpact": "NONE",
          "baseScore": 7.5,
          "baseSeverity": "HIGH"
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        "exploitabilityScore": 3.9,
        "impactScore": 3.6
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        "baseSeverity": "MEDIUM",
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        "obtainAllPrivilege": false,
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        "obtainOtherPrivilege": false,
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      }
    ]
  },
  "weaknesses": [
    {
      "source": "nvd@nist.gov",
      "type": "Primary",
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      "type": "Secondary",
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  "references": [
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      "url": "https://github.com/istio/istio/security/advisories/GHSA-hqxw-mm44-gc4r",
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}