FKIE_CVE-2022-23131

Vulnerability from fkie_nvd - Published: 2022-01-13 16:15 - Updated: 2025-10-30 20:10
Severity ?
9.1 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
9.8 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Summary
In the case of instances where the SAML SSO authentication is enabled (non-default), session data can be modified by a malicious actor, because a user login stored in the session was not verified. Malicious unauthenticated actor may exploit this issue to escalate privileges and gain admin access to Zabbix Frontend. To perform the attack, SAML authentication is required to be enabled and the actor has to know the username of Zabbix user (or use the guest account, which is disabled by default).
References
security@zabbix.comhttps://support.zabbix.com/browse/ZBX-20350Issue Tracking, Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.zabbix.com/browse/ZBX-20350Issue Tracking, Patch, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23131US Government Resource
Impacted products
Vendor Product Version
zabbix zabbix *
zabbix zabbix 6.0.0
To clipboard 

{
  "cisaActionDue": "2022-03-08",
  "cisaExploitAdd": "2022-02-22",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "Zabbix Frontend Authentication Bypass Vulnerability",
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "19429F9A-8623-4BA9-984B-4982418C21CD",
              "versionEndIncluding": "5.4.8",
              "versionStartIncluding": "5.4.0",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:a:zabbix:zabbix:6.0.0:alpha1:*:*:*:*:*:*",
              "matchCriteriaId": "0DC67B03-AF43-45C9-8EAC-D60DA5887712",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the case of instances where the SAML SSO authentication is enabled (non-default), session data can be modified by a malicious actor, because a user login stored in the session was not verified. Malicious unauthenticated actor may exploit this issue to escalate privileges and gain admin access to Zabbix Frontend. To perform the attack, SAML authentication is required to be enabled and the actor has to know the username of Zabbix user (or use the guest account, which is disabled by default)."
    },
    {
      "lang": "es",
      "value": "En el caso de las instancias en las que la autenticaci\u00f3n SAML SSO est\u00e1 habilitada (no por defecto), los datos de la sesi\u00f3n pueden ser modificados por un actor malicioso, ya que un login de usuario almacenado en la sesi\u00f3n no fue verificado. Un actor malicioso no autenticado puede explotar este problema para escalar privilegios y conseguir acceso de administrador a Zabbix Frontend. Para llevar a cabo el ataque, es requerido que la autenticaci\u00f3n SAML est\u00e9 habilitada y que el actor conozca el nombre de usuario de Zabbix (o que use la cuenta de invitado, que est\u00e1 deshabilitada por defecto)"
    }
  ],
  "id": "CVE-2022-23131",
  "lastModified": "2025-10-30T20:10:41.160",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "HIGH",
          "accessVector": "NETWORK",
          "authentication": "NONE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.1,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "PARTIAL",
          "vectorString": "AV:N/AC:H/Au:N/C:P/I:P/A:P",
          "version": "2.0"
        },
        "exploitabilityScore": 4.9,
        "impactScore": 6.4,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "NONE",
          "baseScore": 9.1,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.2,
        "source": "security@zabbix.com",
        "type": "Secondary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 9.8,
          "baseSeverity": "CRITICAL",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 3.9,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "published": "2022-01-13T16:15:08.053",
  "references": [
    {
      "source": "security@zabbix.com",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://support.zabbix.com/browse/ZBX-20350"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Patch",
        "Vendor Advisory"
      ],
      "url": "https://support.zabbix.com/browse/ZBX-20350"
    },
    {
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "tags": [
        "US Government Resource"
      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-23131"
    }
  ],
  "sourceIdentifier": "security@zabbix.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-290"
        }
      ],
      "source": "security@zabbix.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-290"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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