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FKIE_CVE-2017-12158

Vulnerability from fkie_nvd - Published: 2017-10-26 17:29 - Updated: 2026-06-17 01:02
Severity
5.4 (Medium) - CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Summary
It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server.
References
secalert@redhat.comhttp://www.securityfocus.com/bid/101618Third Party Advisory, VDB Entry
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2904Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2905Third Party Advisory
secalert@redhat.comhttps://access.redhat.com/errata/RHSA-2017:2906Third Party Advisory
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1489161Issue Tracking
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/101618Third Party Advisory, VDB Entry
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2904Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2905Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://access.redhat.com/errata/RHSA-2017:2906Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1489161Issue Tracking
Impacted products
Vendor Product Version
redhat single_sign_on 7.0
redhat single_sign_on 7.1
redhat enterprise_linux_server 6.0
redhat enterprise_linux_server 7.0
keycloak keycloak -
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "keycloak",
          "vendor": "Red Hat, Inc.",
          "versions": [
            {
              "status": "affected",
              "version": "3.4.0"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
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              "matchCriteriaId": "DF1B9058-6085-456E-B86B-59C5B6169768",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:redhat:single_sign_on:7.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "11FE6021-DBE7-4FFD-B021-F97EF80BDEEA",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        },
        {
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              "vulnerable": false
            },
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              "vulnerable": false
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ],
      "operator": "AND"
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:keycloak:keycloak:-:*:*:*:*:*:*:*",
              "matchCriteriaId": "571D4D3F-5768-4F93-9337-3D82B7E0C118",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "It was found that Keycloak would accept a HOST header URL in the admin console and use it to determine web resource locations. An attacker could use this flaw against an authenticated user to attain reflected XSS via a malicious server."
    },
    {
      "lang": "es",
      "value": "Se ha descubierto que Keycloak podr\u00eda aceptar una URL de cabecera HOST en la consola de administraci\u00f3n y emplearla para determinar localizaciones de recursos web. Un atacante podr\u00eda usar este fallo contra un usuario autenticado para lograr un XSS reflejado mediante un servidor malicioso."
    }
  ],
  "id": "CVE-2017-12158",
  "lastModified": "2026-06-17T01:02:47.650",
  "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
      }
    ],
    "cvssMetricV30": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 5.4,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "LOW",
          "integrityImpact": "LOW",
          "privilegesRequired": "LOW",
          "scope": "CHANGED",
          "userInteraction": "REQUIRED",
          "vectorString": "CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
          "version": "3.0"
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        "exploitabilityScore": 2.3,
        "impactScore": 2.7,
        "source": "nvd@nist.gov",
        "type": "Primary"
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  },
  "published": "2017-10-26T17:29:00.203",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
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        "VDB Entry"
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      "url": "http://www.securityfocus.com/bid/101618"
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    },
    {
      "source": "secalert@redhat.com",
      "tags": [
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      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1489161"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Third Party Advisory",
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      "url": "http://www.securityfocus.com/bid/101618"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
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      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1489161"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-79"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



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