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FKIE_CVE-2018-14655

Vulnerability from fkie_nvd - Published: 2018-11-13 19:29 - Updated: 2026-06-17 01:41
Severity
4.6 (Medium) - CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N
5.4 (Medium) - CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Summary
A flaw was found in Keycloak 3.4.3.Final, 4.0.0.Beta2, 4.3.0.Final. When using 'response_mode=form_post' it is possible to inject arbitrary Javascript-Code via the 'state'-parameter in the authentication URL. This allows an XSS-Attack upon succesfully login.
References
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2018:3592Vendor Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2018:3593Vendor Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2018:3595Vendor Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655Issue Tracking, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3592Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3593Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2018:3595Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655Issue Tracking, Vendor Advisory
Impacted products
Vendor Product Version
redhat keycloak 3.4.3
redhat keycloak 4.0.0
redhat keycloak 4.3.0
redhat single_sign-on 7.2
redhat linux 7.0
redhat single_sign-on 7.2
redhat linux 6.0
redhat single_sign-on -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "keycloak",
          "vendor": "Red Hat",
          "versions": [
            {
              "status": "affected",
              "version": "3.4.3.Final, 4.0.0.Beta2, 4.3.0.Final"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
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  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A flaw was found in Keycloak 3.4.3.Final, 4.0.0.Beta2, 4.3.0.Final. When using \u0027response_mode=form_post\u0027 it is possible to inject arbitrary Javascript-Code via the \u0027state\u0027-parameter in the authentication URL. This allows an XSS-Attack upon succesfully login."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto un error en Keycloak 3.4.3.Final, 4.0.0.Beta2 y 4.3.0.Final. Al emplear \"response_mode=form_post\", es posible inyectar c\u00f3digo JavaScript arbitrario mediante el par\u00e1metro \"state\" en la URL de autenticaci\u00f3n. Esto permite un ataque Cross-Site Scripting (XSS) al iniciar sesi\u00f3n exitosamente."
    }
  ],
  "id": "CVE-2018-14655",
  "lastModified": "2026-06-17T01:41:23.190",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "LOW",
        "cvssData": {
          "accessComplexity": "MEDIUM",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "NONE",
          "baseScore": 3.5,
          "confidentialityImpact": "NONE",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:M/Au:S/C:N/I:P/A:N",
          "version": "2.0"
        },
        "exploitabilityScore": 6.8,
        "impactScore": 2.9,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": true
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    "cvssMetricV30": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
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          "baseScore": 4.6,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 2.1,
        "impactScore": 2.5,
        "source": "secalert@redhat.com",
        "type": "Secondary"
      },
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
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          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.0"
        },
        "exploitabilityScore": 2.3,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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    ]
  },
  "published": "2018-11-13T19:29:00.307",
  "references": [
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      "source": "secalert@redhat.com",
      "tags": [
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      "source": "secalert@redhat.com",
      "tags": [
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      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-14655"
    },
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  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
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    {
      "description": [
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          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
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    }
  ]
}



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