{
  "affected": [
    {
      "ranges": [
        {
          "database_specific": {
            "cpe": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
            "extracted_events": [
              {
                "introduced": "2.4.17"
              },
              {
                "last_affected": "2.4.34"
              }
            ],
            "source": "CPE_RANGE"
          },
          "events": [
            {
              "introduced": "47a9d8e8abf5697b4580c3ee2ade302b5c058fa6"
            },
            {
              "last_affected": "e0b198f98b01973f75cb734b3864c429945dbdb0"
            }
          ],
          "repo": "https://github.com/apache/httpd",
          "type": "GIT"
        }
      ]
    }
  ],
  "database_specific": {
    "unresolved_ranges": [
      {
        "cpes": [
          "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "18.04"
          },
          {
            "last_affected": "18.04"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "canonical:ubuntu_linux"
      },
      {
        "cpes": [
          "cpe:2.3:a:oracle:enterprise_manager_ops_center:12.3.3:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "12.3.3"
          },
          {
            "last_affected": "12.3.3"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "oracle:enterprise_manager_ops_center"
      },
      {
        "cpes": [
          "cpe:2.3:a:oracle:hospitality_guest_access:4.2.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:oracle:hospitality_guest_access:4.2.1:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "4.2.0"
          },
          {
            "last_affected": "4.2.0"
          },
          {
            "introduced": "4.2.1"
          },
          {
            "last_affected": "4.2.1"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "oracle:hospitality_guest_access"
      },
      {
        "cpes": [
          "cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*",
          "cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*",
          "cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "17.1"
          },
          {
            "last_affected": "17.1"
          },
          {
            "introduced": "17.2"
          },
          {
            "last_affected": "17.2"
          },
          {
            "introduced": "17.3"
          },
          {
            "last_affected": "17.3"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "oracle:instantis_enterprisetrack"
      },
      {
        "cpes": [
          "cpe:2.3:a:oracle:retail_xstore_point_of_service:7.0:*:*:*:*:*:*:*",
          "cpe:2.3:a:oracle:retail_xstore_point_of_service:7.1:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "7.0"
          },
          {
            "last_affected": "7.0"
          },
          {
            "introduced": "7.1"
          },
          {
            "last_affected": "7.1"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "oracle:retail_xstore_point_of_service"
      },
      {
        "cpes": [
          "cpe:2.3:a:oracle:secure_global_desktop:5.4:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "5.4"
          },
          {
            "last_affected": "5.4"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "oracle:secure_global_desktop"
      },
      {
        "cpes": [
          "cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
          "cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
          "cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:*",
          "cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*",
          "cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*"
        ],
        "extracted_events": [
          {
            "introduced": "6.0"
          },
          {
            "last_affected": "6.0"
          },
          {
            "introduced": "7.0"
          },
          {
            "last_affected": "7.0"
          },
          {
            "introduced": "7.4"
          },
          {
            "last_affected": "7.4"
          },
          {
            "introduced": "7.5"
          },
          {
            "last_affected": "7.5"
          },
          {
            "introduced": "7.6"
          },
          {
            "last_affected": "7.6"
          }
        ],
        "source": "CPE_STRING",
        "vendor_product": "redhat:enterprise_linux"
      }
    ]
  },
  "details": "In Apache HTTP Server 2.4.17 to 2.4.34, by sending continuous, large SETTINGS frames a client can occupy a connection, server thread and CPU time without any connection timeout coming to effect. This affects only HTTP/2 connections. A possible mitigation is to not enable the h2 protocol.",
  "id": "CVE-2018-11763",
  "modified": "2026-07-08T05:37:43.618301455Z",
  "published": "2018-09-25T21:29:00.283Z",
  "references": [
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00030.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2019-07/msg00056.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/56c2e7cc9deb1c12a843d0dc251ea7fd3e7e80293cde02fcd65286ba%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/84a3714f0878781f6ed84473d1a503d2cc382277e100450209231830%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r06f0d87ebb6d59ed8379633f36f72f5b1f79cadfda72ede0830b42cf%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r15f9aa4427581a1aecb4063f1b4b983511ae1c9935e2a0a6876dad3c%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r6521a7f62276340eabdb3339b2aa9a38c5f59d978497a1f794af53be%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r76142b8c5119df2178be7c2dba88fde552eedeec37ea993dfce68d1d%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/r9f93cf6dde308d42a9c807784e8102600d0397f5f834890708bf6920%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rc998b18880df98bafaade071346690c2bc1444adaa1a1ea464b93f0a%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rd18c3c43602e66f9cdcf09f1de233804975b9572b0456cc582390b6f%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/re3d27b6250aa8548b8845d314bb8a350b3df326cacbbfdfe4d455234%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rf6449464fd8b7437704c55f88361b66f12d5b5f90bcce66af4be4ba9%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread.html/rfcf929bd33a6833e3f0c35eebdad70d5060665f9c4e17ea467c66770%40%3Ccvs.httpd.apache.org%3E"
    },
    {
      "type": "WEB",
      "url": "https://www.tenable.com/security/tns-2019-09"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.securityfocus.com/bid/105414"
    },
    {
      "type": "ADVISORY",
      "url": "http://www.securitytracker.com/id/1041713"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2018:3558"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2019:0366"
    },
    {
      "type": "ADVISORY",
      "url": "https://access.redhat.com/errata/RHSA-2019:0367"
    },
    {
      "type": "ADVISORY",
      "url": "https://httpd.apache.org/security/vulnerabilities_24.html"
    },
    {
      "type": "ADVISORY",
      "url": "https://security.netapp.com/advisory/ntap-20190204-0004/"
    },
    {
      "type": "ADVISORY",
      "url": "https://support.hpe.com/hpsc/doc/public/display?docLocale=en_US\u0026docId=emr_na-hpesbux03909en_us"
    },
    {
      "type": "ADVISORY",
      "url": "https://usn.ubuntu.com/3783-1/"
    },
    {
      "type": "FIX",
      "url": "https://www.oracle.com/technetwork/security-advisory/cpuapr2019-5072813.html"
    },
    {
      "type": "FIX",
      "url": "https://www.oracle.com/technetwork/security-advisory/cpujan2019-5072801.html"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}