CVE-2021-27927

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.

CVSS v3 8.8 HIGH
CVSS v2.0 6.8 MEDIUM

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

6.8^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:M/Au:N/C:P/I:P/A:P

Exploitability : 8.6 / Impact : 6.4

Access Vector NETWORK

Access Complexity MEDIUM

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html
https://support.zabbix.com/browse/ZBX-18942	Issue Tracking Patch Vendor Advisory
https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html
https://support.zabbix.com/browse/ZBX-18942	Issue Tracking Patch Vendor Advisory

Configurations

Configuration 1 (hide)

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

History

21 Nov 2024, 05:58

Type	Values Removed	Values Added
References	~~() https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html -~~	() https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html -
References	~~() https://support.zabbix.com/browse/ZBX-18942 - Issue Tracking, Patch, Vendor Advisory~~	() https://support.zabbix.com/browse/ZBX-18942 - Issue Tracking, Patch, Vendor Advisory

Information

Published : 2021-03-03 17:15

Updated : 2024-11-21 05:58

NVD link : CVE-2021-27927

Mitre link : CVE-2021-27927

CVE.ORG link : CVE-2021-27927

JSON object : View

Products Affected

zabbix

zabbix

CWE

CWE-352

Cross-Site Request Forgery (CSRF)

{"id": "CVE-2021-27927", "metrics": {"cvssMetricV2": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"version": "2.0", "baseScore": 6.8, "accessVector": "NETWORK", "vectorString": "AV:N/AC:M/Au:N/C:P/I:P/A:P", "authentication": "NONE", "integrityImpact": "PARTIAL", "accessComplexity": "MEDIUM", "availabilityImpact": "PARTIAL", "confidentialityImpact": "PARTIAL"}, "acInsufInfo": false, "impactScore": 6.4, "baseSeverity": "MEDIUM", "obtainAllPrivilege": false, "exploitabilityScore": 8.6, "obtainUserPrivilege": false, "obtainOtherPrivilege": false, "userInteractionRequired": true}], "cvssMetricV31": [{"type": "Primary", "source": "nvd@nist.gov", "cvssData": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 8.8, "attackVector": "NETWORK", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "REQUIRED", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "NONE", "confidentialityImpact": "HIGH"}, "impactScore": 5.9, "exploitabilityScore": 2.8}]}, "published": "2021-03-03T17:15:12.753", "references": [{"url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html", "source": "cve@mitre.org"}, {"url": "https://support.zabbix.com/browse/ZBX-18942", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "cve@mitre.org"}, {"url": "https://lists.debian.org/debian-lts-announce/2023/04/msg00013.html", "source": "af854a3a-2127-422b-91ae-364da2661108"}, {"url": "https://support.zabbix.com/browse/ZBX-18942", "tags": ["Issue Tracking", "Patch", "Vendor Advisory"], "source": "af854a3a-2127-422b-91ae-364da2661108"}], "vulnStatus": "Modified", "weaknesses": [{"type": "Primary", "source": "nvd@nist.gov", "description": [{"lang": "en", "value": "CWE-352"}]}], "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"}], "lastModified": "2024-11-21T05:58:50.260", "configurations": [{"nodes": [{"negate": false, "cpeMatch": [{"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "7DBC6970-CABB-481C-9797-A2C27DE6FCCB", "versionEndIncluding": "4.0.27", "versionStartIncluding": "4.0.0"}, {"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "BD1D7614-E9FA-4DED-BBFA-D872E75757B6", "versionEndIncluding": "5.0.9", "versionStartIncluding": "5.0.0"}, {"criteria": "cpe:2.3:a:zabbix:zabbix:*:*:*:*:*:*:*:*", "vulnerable": true, "matchCriteriaId": "5499DEBB-A4E5-4035-8F23-77C1AF3D34E3", "versionEndIncluding": "5.2.3", "versionStartIncluding": "5.2.0"}], "operator": "OR"}]}], "sourceIdentifier": "cve@mitre.org"}