CVE-2018-11763 (GCVE-0-2018-11763)

Vulnerability from cvelistv5 – Published: 2018-09-25 21:00 – Updated: 2024-09-17 02:21
VLAI
Summary
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.
Severity
5.9 (Medium)
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
CWE
  • mod_http2, DoS via continuous SETTINGS frames
Assigner
apache CNA under the mitre root
CNA scorecard B 76/100 over 1024 records in the last 180 days details
References
URL Tags
https://www.oracle.com/technetwork/security-advis… x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2018:3558 vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/105414 vdb-entryx_refsource_BID
https://support.hpe.com/hpsc/doc/public/display?d… x_refsource_CONFIRM
https://security.netapp.com/advisory/ntap-2019020… x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2019:0367 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3783-1/ vendor-advisoryx_refsource_UBUNTU
https://httpd.apache.org/security/vulnerabilities… x_refsource_CONFIRM
http://www.securitytracker.com/id/1041713 vdb-entryx_refsource_SECTRACK
https://access.redhat.com/errata/RHSA-2019:0366 vendor-advisoryx_refsource_REDHAT
https://www.oracle.com/technetwork/security-advis… x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://lists.apache.org/thread.html/56c2e7cc9deb… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/84a3714f0878… mailing-listx_refsource_MLIST
https://www.tenable.com/security/tns-2019-09 x_refsource_CONFIRM
https://lists.apache.org/thread.html/rd18c3c43602… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/re3d27b6250a… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rf6449464fd8… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r06f0d87ebb6… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rc998b18880d… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r15f9aa44275… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rfcf929bd33a… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9f93cf6dde3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r6521a7f6227… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r76142b8c511… mailing-listx_refsource_MLIST
Impacted products
Vendor Product Version CPE status
Apache Software Foundation Apache HTTP Server Affected: 2.4.17 to 2.4.34
guessed Create a notification for this product.
Date Public
2018-09-25 00:00
Show details on NVD website
To clipboard 

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        ],
        "sourceIdentifier": "security@apache.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
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    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-09-21T05:36:08+00:00",
      "cve": "CVE-2018-11763",
      "id": "CVE-2018-11763",
      "initial_release_date": "2018-09-25T00:00:00+00:00",
      "product_status:fixed": "475",
      "product_status:known_affected": "1",
      "product_status:known_not_affected": "42",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "httpd: DoS for HTTP/2 connections by continuous SETTINGS frames",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2018/cve-2018-11763.json",
      "version": "3"
    }
  }
}



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