GCVE Workshop - 22 September 2026 (14:00-18:00), Luxembourg Before The Vulnopticon Conference - Registration

FKIE_CVE-2024-24791

Vulnerability from fkie_nvd - Published: 2024-07-02 22:15 - Updated: 2026-06-17 07:14
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
The net/http HTTP/1.1 client mishandled the case where a server responds to a request with an "Expect: 100-continue" header with a non-informational (200 or higher) status. This mishandling could leave a client connection in an invalid state, where the next request sent on the connection will fail. An attacker sending a request to a net/http/httputil.ReverseProxy proxy can exploit this mishandling to cause a denial of service by sending "Expect: 100-continue" requests which elicit a non-informational response from the backend. Each such request leaves the proxy with an invalid connection, and causes one subsequent request using that connection to fail.
References
security@golang.orghttps://go.dev/cl/591255
security@golang.orghttps://go.dev/issue/67555
security@golang.orghttps://groups.google.com/g/golang-dev/c/t0rK-qHBqzY/m/6MMoAZkMAgAJ
security@golang.orghttps://pkg.go.dev/vuln/GO-2024-2963
af854a3a-2127-422b-91ae-364da2661108https://go.dev/cl/591255
af854a3a-2127-422b-91ae-364da2661108https://go.dev/issue/67555
af854a3a-2127-422b-91ae-364da2661108https://groups.google.com/g/golang-dev/c/t0rK-qHBqzY/m/6MMoAZkMAgAJ
af854a3a-2127-422b-91ae-364da2661108https://pkg.go.dev/vuln/GO-2024-2963
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20241004-0004/
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "collectionURL": "https://pkg.go.dev",
          "defaultStatus": "unaffected",
          "packageName": "net/http",
          "product": "net/http",
          "programRoutines": [
            {
              "name": "persistConn.readResponse"
            },
            {
              "name": "Client.CloseIdleConnections"
            },
            {
              "name": "Client.Do"
            },
            {
              "name": "Client.Get"
            },
            {
              "name": "Client.Head"
            },
            {
              "name": "Client.Post"
            },
            {
              "name": "Client.PostForm"
            },
            {
              "name": "Get"
            },
            {
              "name": "Head"
            },
            {
              "name": "Post"
            },
            {
              "name": "PostForm"
            },
            {
              "name": "Transport.CancelRequest"
            },
            {
              "name": "Transport.CloseIdleConnections"
            },
            {
              "name": "Transport.RoundTrip"
            }
          ],
          "vendor": "Go standard library",
          "versions": [
            {
              "lessThan": "1.21.12",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThan": "1.22.5",
              "status": "affected",
              "version": "1.22.0-0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "source": "security@golang.org"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:go_standard_library:net\\/http:1.21.12:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "net\\/http",
          "vendor": "go_standard_library",
          "versions": [
            {
              "lessThan": "1.21.12",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            },
            {
              "lessThan": "1.22.5",
              "status": "affected",
              "version": "1.22.0-0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "The net/http HTTP/1.1 client mishandled the case where a server responds to a request with an \"Expect: 100-continue\" header with a non-informational (200 or higher) status. This mishandling could leave a client connection in an invalid state, where the next request sent on the connection will fail. An attacker sending a request to a net/http/httputil.ReverseProxy proxy can exploit this mishandling to cause a denial of service by sending \"Expect: 100-continue\" requests which elicit a non-informational response from the backend. Each such request leaves the proxy with an invalid connection, and causes one subsequent request using that connection to fail."
    },
    {
      "lang": "es",
      "value": "El cliente net/http HTTP/1.1 manej\u00f3 mal el caso en el que un servidor responde a una solicitud con un encabezado \"Expect: 100-continue\" con un estado no informativo (200 o superior). Este mal manejo podr\u00eda dejar una conexi\u00f3n de cliente en un estado no v\u00e1lido, donde la siguiente solicitud enviada a la conexi\u00f3n fallar\u00e1. Un atacante que env\u00eda una solicitud a un proxy net/http/httputil.ReverseProxy puede aprovechar este mal manejo para provocar una denegaci\u00f3n de servicio enviando solicitudes \"Esperar: 100-continuar\" que provocan una respuesta no informativa del backend. Cada una de estas solicitudes deja al proxy con una conexi\u00f3n no v\u00e1lida y provoca que falle una solicitud posterior que utiliza esa conexi\u00f3n."
    }
  ],
  "id": "CVE-2024-24791",
  "lastModified": "2026-06-17T07:14:52.253",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "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"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 3.6,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-24791",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-07-03T13:39:23.366299Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-07-02T22:15:04.833",
  "references": [
    {
      "source": "security@golang.org",
      "url": "https://go.dev/cl/591255"
    },
    {
      "source": "security@golang.org",
      "url": "https://go.dev/issue/67555"
    },
    {
      "source": "security@golang.org",
      "url": "https://groups.google.com/g/golang-dev/c/t0rK-qHBqzY/m/6MMoAZkMAgAJ"
    },
    {
      "source": "security@golang.org",
      "url": "https://pkg.go.dev/vuln/GO-2024-2963"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://go.dev/cl/591255"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://go.dev/issue/67555"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://groups.google.com/g/golang-dev/c/t0rK-qHBqzY/m/6MMoAZkMAgAJ"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://pkg.go.dev/vuln/GO-2024-2963"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.netapp.com/advisory/ntap-20241004-0004/"
    }
  ],
  "sourceIdentifier": "security@golang.org",
  "vulnStatus": "Deferred"
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.


Detection rules are retrieved from Rulezet.


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.