CVE-2016-8740 (GCVE-0-2016-8740)

Vulnerability from cvelistv5 – Published: 2016-12-05 19:00 – Updated: 2024-08-06 02:34
VLAI
Summary
The mod_http2 module in the Apache HTTP Server 2.4.17 through 2.4.23, when the Protocols configuration includes h2 or h2c, does not restrict request-header length, which allows remote attackers to cause a denial of service (memory consumption) via crafted CONTINUATION frames in an HTTP/2 request.
CWE
  • n/a
References
URL Tags
https://support.apple.com/HT208221 x_refsource_CONFIRM
https://github.com/apache/httpd/commit/29c63b786a… x_refsource_CONFIRM
http://www.securitytracker.com/id/1037388 vdb-entryx_refsource_SECTRACK
http://packetstormsecurity.com/files/140023/Apach… x_refsource_MISC
https://access.redhat.com/errata/RHSA-2017:1413 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2017:1161 vendor-advisoryx_refsource_REDHAT
https://www.tenable.com/security/tns-2017-04 x_refsource_CONFIRM
https://access.redhat.com/errata/RHSA-2017:1414 vendor-advisoryx_refsource_REDHAT
https://h20566.www2.hpe.com/hpsc/doc/public/displ… x_refsource_CONFIRM
https://www.exploit-db.com/exploits/40909/ exploitx_refsource_EXPLOIT-DB
http://rhn.redhat.com/errata/RHSA-2017-1415.html vendor-advisoryx_refsource_REDHAT
http://www.securityfocus.com/bid/94650 vdb-entryx_refsource_BID
https://security.gentoo.org/glsa/201701-36 vendor-advisoryx_refsource_GENTOO
https://security.netapp.com/advisory/ntap-2018042… x_refsource_CONFIRM
https://lists.apache.org/thread.html/56c2e7cc9deb… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/84a3714f0878… mailing-listx_refsource_MLIST
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/rc998b18880d… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/re1e3a24664d… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r04e89e873d5… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r9f93cf6dde3… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rcc44594d4d6… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rb14daf9cc4e… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/rd336919f655… mailing-listx_refsource_MLIST
https://lists.apache.org/thread.html/r476d175be0a… 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 - 2.4.23
guessed Create a notification for this product.
Date Public
2016-12-04 00:00
Show details on NVD website

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            "source": "af854a3a-2127-422b-91ae-364da2661108",
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.gentoo.org/glsa/201701-36"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://security.netapp.com/advisory/ntap-20180423-0001/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://support.apple.com/HT208221"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "tags": [
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              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "https://www.exploit-db.com/exploits/40909/"
          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
            "url": "https://www.tenable.com/security/tns-2017-04"
          }
        ],
        "sourceIdentifier": "security@apache.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-20"
              },
              {
                "lang": "en",
                "value": "CWE-399"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-09-21T05:49:31+00:00",
      "cve": "CVE-2016-8740",
      "id": "CVE-2016-8740",
      "initial_release_date": "2016-12-04T00:00:00+00:00",
      "product_status:fixed": "123",
      "product_status:known_not_affected": "32",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "httpd: Incomplete handling of LimitRequestFields directive in mod_http2",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2016/cve-2016-8740.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-01T02:10:04Z",
      "cve": "CVE-2016-8740",
      "id": "CVE-2016-8740",
      "initial_release_date": "2023-02-15T04:56:35Z",
      "product_status:known_affected": "394",
      "product_status:known_not_affected": "63",
      "product_status:recommended": "385",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2016-8740",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2016-8740.json",
      "version": "32"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

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Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.


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