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        "category": "legal_disclaimer",
        "text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Cloud Linux Inc. and provide a link to the original.",
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          "category": "description",
          "text": "Envoy is a cloud-native high-performance edge/middle/service proxy. Envoy’s HTTP/2 codec may leak a header map and bookkeeping structures upon receiving `RST_STREAM` immediately followed by the `GOAWAY` frames from an upstream server. In nghttp2, cleanup of pending requests due to receipt of the `GOAWAY` frame skips de-allocation of the bookkeeping structure and pending compressed header. The error return [code path] is taken if connection is already marked for not sending more requests due to `GOAWAY` frame. The clean-up code is right after the return statement, causing memory leak. Denial of service through memory exhaustion. This vulnerability was patched in versions(s) 1.26.3, 1.25.8, 1.24.9, 1.23.11.",
          "title": "Vulnerability description"
        },
        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.",
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            "Debian-10:nghttp2-proxy-0:1.36.0-2+deb10u3.amd64",
            "Debian-10:nghttp2-server-0:1.36.0-2+deb10u3.amd64"
          ]
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
            "Debian-10:libnghttp2-14-0:1.36.0-2+deb10u3+tuxcare.els1.amd64",
            "Debian-10:libnghttp2-14-0:1.36.0-2+deb10u3.amd64",
            "Debian-10:libnghttp2-dev-0:1.36.0-2+deb10u3+tuxcare.els1.amd64",
            "Debian-10:libnghttp2-dev-0:1.36.0-2+deb10u3.amd64",
            "Debian-10:libnghttp2-doc-0:1.36.0-2+deb10u3+tuxcare.els1.all",
            "Debian-10:libnghttp2-doc-0:1.36.0-2+deb10u3.all",
            "Debian-10:nghttp2-0:1.36.0-2+deb10u3+tuxcare.els1.all",
            "Debian-10:nghttp2-0:1.36.0-2+deb10u3.all",
            "Debian-10:nghttp2-client-0:1.36.0-2+deb10u3+tuxcare.els1.amd64",
            "Debian-10:nghttp2-client-0:1.36.0-2+deb10u3.amd64",
            "Debian-10:nghttp2-proxy-0:1.36.0-2+deb10u3+tuxcare.els1.amd64",
            "Debian-10:nghttp2-proxy-0:1.36.0-2+deb10u3.amd64",
            "Debian-10:nghttp2-server-0:1.36.0-2+deb10u3+tuxcare.els1.amd64",
            "Debian-10:nghttp2-server-0:1.36.0-2+deb10u3.amd64"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ]
    }
  ]
}