CVE-2021-27927 - Vulnerability Details - OpenCVE

In Zabbix from 4.0.x before 4.0.28rc1, 5.0.0alpha1 before 5.0.10rc1, 5.2.x before 5.2.6rc1, and 5.4.0alpha1 before 5.4.0beta2, the CControllerAuthenticationUpdate controller lacks a CSRF protection mechanism. The code inside this controller calls diableSIDValidation inside the init() method. An attacker doesn't have to know Zabbix user login credentials, but has to know the correct Zabbix URL and contact information of an existing user with sufficient privileges.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction Required

No CVSS v3.0

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Partial

Integrity Impact Partial

Availability Impact Partial

This CVE is not in the KEV list.

Key SSVC decision points have not yet been added.

Vendors	Products
Zabbix	Zabbix

Configuration 1 [-]

OR	cpe:2.3:a:zabbix:zabbix::::::::
	cpe:2.3:a:zabbix:zabbix::::::::
	cpe:2.3:a:zabbix:zabbix::::::::

No data.

References

Link	Providers
https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html
https://support.zabbix.com/browse/ZBX-18942

History

No history.

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2021-03-03T00:00:00

Updated: 2024-08-03T21:33:16.680Z

Reserved: 2021-03-03T00:00:00

Link: CVE-2021-27927

Vulnrichment

No data.

NVD

Status : Modified

Published: 2021-03-03T17:15:12.753

Modified: 2024-11-21T05:58:50.260

Link: CVE-2021-27927

Redhat

No data.

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "matchCriteriaId": "7DBC6970-CABB-481C-9797-A2C27DE6FCCB", "versionEndIncluding": "4.0.27", "versionStartIncluding": "4.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "matchCriteriaId": "BD1D7614-E9FA-4DED-BBFA-D872E75757B6", "versionEndIncluding": "5.0.9", "versionStartIncluding": "5.0.0", "vulnerable": true}, {"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "matchCriteriaId": "5499DEBB-A4E5-4035-8F23-77C1AF3D34E3", "versionEndIncluding": "5.2.3", "versionStartIncluding": "5.2.0", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "In Zabbix from 4.0.x before 4.0.28rc1, 5.0.0alpha1 before 5.0.10rc1, 5.2.x before 5.2.6rc1, and 5.4.0alpha1 before 5.4.0beta2, the CControllerAuthenticationUpdate controller lacks a CSRF protection mechanism. The code inside this controller calls diableSIDValidation inside the init() method. An attacker doesn't have to know Zabbix user login credentials, but has to know the correct Zabbix URL and contact information of an existing user with sufficient privileges."}, {"lang": "es", "value": "En Zabbix desde las versiones 4.0.x anteriores a 4.0.28rc1, versiones 5.0.0alpha1 anteriores a 5.0.10rc1, versiones 5.2.x anteriores a 5.2.6rc1, y versiones 5.4.0alpha1 anteriores a 5.4.0beta2, el controlador CControllerAuthenticationUpdate carece de un mecanismo de protecci\u00f3n CSRF. El c\u00f3digo dentro de este controlador llama a diableSIDValidation dentro del m\u00e9todo init(). Un atacante no tiene que conocer las credenciales de inicio de sesi\u00f3n del usuario de Zabbix, pero tiene que conocer la URL correcta de Zabbix y la informaci\u00f3n de contacto de un usuario existente con suficientes privilegios"}], "id": "CVE-2021-27927", "lastModified": "2024-11-21T05:58:50.260", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 6.8, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": true}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-03-03T17:15:12.753", "references": [{"source": "cve@mitre.org", "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://support.zabbix.com/browse/ZBX-18942"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "url": "https://support.zabbix.com/browse/ZBX-18942"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-352"}], "source": "nvd@nist.gov", "type": "Primary"}]}