FKIE_CVE-2020-10758

Vulnerability from fkie_nvd - Published: 2020-09-16 16:15 - Updated: 2026-06-17 02:48
Severity
7.5 (High) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Summary
A vulnerability was found in Keycloak before 11.0.1 where DoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, all with a Content-Length header value that exceeds the actual byte count of the request body.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1843849Issue Tracking, Mitigation, Vendor Advisory
secalert@redhat.comhttps://github.com/keycloak/keycloak/commit/bee4ca89897766c4b68856eafe14f1a3dad34251Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1843849Issue Tracking, Mitigation, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://github.com/keycloak/keycloak/commit/bee4ca89897766c4b68856eafe14f1a3dad34251Patch, Third Party Advisory
Impacted products
Vendor Product Version
redhat keycloak *
redhat openshift_application_runtimes -
redhat openshift_application_runtimes 1.0
redhat single_sign-on -
redhat single_sign-on 7.0
redhat single_sign-on 7.4
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{
  "affected": [
    {
      "affectedData": [
        {
          "product": "Keycloak",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Keycloak before 11.0.1"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:redhat:keycloak:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "523EF2BD-1C36-4166-B099-D1593691BDAA",
              "versionEndExcluding": "11.0.1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:openshift_application_runtimes:-:*:*:*:text-only:*:*:*",
              "matchCriteriaId": "ADB40F59-CAAE-47D6-850C-12619D8D5B34",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:openshift_application_runtimes:1.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "183C1FAB-3101-4155-BAA4-819EE997E436",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:single_sign-on:-:*:*:*:text-only:*:*:*",
              "matchCriteriaId": "341E6313-20D5-44CB-9719-B20585DC5AD6",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:single_sign-on:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "9EFEC7CA-8DDA-48A6-A7B6-1F1D14792890",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:single_sign-on:7.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "F62A7110-16D5-4633-A521-9CECD267773B",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in Keycloak before 11.0.1 where DoS attack is possible by sending twenty requests simultaneously to the specified keycloak server, all with a Content-Length header value that exceeds the actual byte count of the request body."
    },
    {
      "lang": "es",
      "value": "Se encontr\u00f3 una vulnerabilidad en Keycloak versiones anteriores a 11.0.1, donde el ataque de DoS es posible mediante el env\u00edo de veinte peticiones simult\u00e1neamente hacia el servidor de keycloak especificado, todas con un valor de encabezado Content-Length que excede el conteo de bytes real del cuerpo de la petici\u00f3n"
    }
  ],
  "id": "CVE-2020-10758",
  "lastModified": "2026-06-17T02:48:23.477",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.0,
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 10.0,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "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": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2020-09-16T16:15:14.797",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Issue Tracking",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1843849"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/keycloak/keycloak/commit/bee4ca89897766c4b68856eafe14f1a3dad34251"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Mitigation",
        "Vendor Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1843849"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch",
        "Third Party Advisory"
      ],
      "url": "https://github.com/keycloak/keycloak/commit/bee4ca89897766c4b68856eafe14f1a3dad34251"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-770"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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