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Vulnerabilities

CVE-2022-23134

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Zabbix Frontend Improper Access Control Vulnerability — Malicious actors can pass step checks and potentially change the configuration of Zabbix Frontend.
Published: Feb 22, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Zabbix Frontend Improper Access Control Vulnerability — Malicious actors can pass step checks and potentially change the configuration of Zabbix Frontend.

🤖 AI Executive Summary

CVE-2022-23134 is a critical improper access control vulnerability in Zabbix Frontend (CVSS 9.0) that allows unauthenticated or low-privileged attackers to bypass step checks and modify Zabbix configuration. This vulnerability poses severe risk to organizations using Zabbix for infrastructure monitoring, as attackers can alter monitoring rules, disable alerts, or inject malicious configurations. Immediate patching is essential given the high CVSS score and availability of exploits.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 15:34
🇸🇦 Saudi Arabia Impact Assessment
Saudi organizations in critical sectors face significant risk: (1) Energy sector (ARAMCO, utilities) — Zabbix commonly monitors SCADA/ICS systems; attackers could disable monitoring of critical infrastructure; (2) Banking/Financial (SAMA-regulated institutions) — Zabbix monitors transaction systems and security infrastructure; configuration changes could mask breaches; (3) Government agencies (NCA, ministries) — Zabbix used for national security monitoring; compromise enables persistent access; (4) Telecommunications (STC, Mobily) — Network monitoring systems vulnerable to configuration tampering; (5) Healthcare — Hospital monitoring systems could be disabled, affecting patient safety systems.
🏢 Affected Saudi Sectors
Energy (ARAMCO, utilities, oil & gas) Banking and Financial Services (SAMA-regulated) Government and Defense (NCA, ministries) Telecommunications (STC, Mobily, Zain) Healthcare (hospitals, medical facilities) Critical Infrastructure Manufacturing and Industrial Control Systems
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Zabbix Frontend instances in your environment and document versions
2. Restrict network access to Zabbix Frontend to authorized administrators only using firewall rules
3. Implement Web Application Firewall (WAF) rules to block suspicious configuration modification requests
4. Enable comprehensive logging and monitoring of all Zabbix Frontend access and configuration changes
5. Review recent Zabbix configuration change logs for unauthorized modifications

PATCHING GUIDANCE:
1. Upgrade Zabbix Frontend to version 5.0.18+ or 6.0.8+ (check vendor advisory for your version)
2. Test patches in non-production environment first
3. Coordinate patching with monitoring team to minimize service disruption
4. Verify patch application by checking version in Zabbix UI

COMPENSATING CONTROLS (if patching delayed):
1. Implement reverse proxy authentication (nginx/Apache) requiring strong credentials
2. Deploy IP whitelisting for Zabbix Frontend access
3. Use VPN/bastion host for all administrative access
4. Implement multi-factor authentication at network layer
5. Disable unnecessary Zabbix API endpoints

DETECTION RULES:
1. Monitor HTTP requests to Zabbix Frontend for unusual parameter patterns in configuration endpoints
2. Alert on configuration changes made outside normal maintenance windows
3. Track failed authentication attempts followed by successful configuration modifications
4. Monitor for requests bypassing normal UI workflow (step checks)
5. Log all API calls to /api/action, /api/configuration endpoints
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع نسخ Zabbix Frontend في بيئتك وتوثيق الإصدارات
2. تقييد الوصول إلى Zabbix Frontend للمسؤولين المصرح لهم فقط باستخدام قواعد جدار الحماية
3. تطبيق قواعد جدار تطبيقات الويب (WAF) لحظر طلبات تعديل التكوين المريبة
4. تفعيل السجلات الشاملة ومراقبة جميع عمليات الوصول وتغييرات التكوين في Zabbix Frontend
5. مراجعة سجلات تغييرات تكوين Zabbix الأخيرة للتعديلات غير المصرح بها

إرشادات التصحيح:
1. ترقية Zabbix Frontend إلى الإصدار 5.0.18+ أو 6.0.8+ (تحقق من إشعار البائع لإصدارك)
2. اختبار التصحيحات في بيئة غير الإنتاج أولاً
3. تنسيق التصحيح مع فريق المراقبة لتقليل انقطاع الخدمة
4. التحقق من تطبيق التصحيح بفحص الإصدار في واجهة Zabbix

الضوابط البديلة (إذا تأخر التصحيح):
1. تطبيق مصادقة خادم وكيل عكسي (nginx/Apache) يتطلب بيانات اعتماد قوية
2. نشر قائمة بيضاء IP للوصول إلى Zabbix Frontend
3. استخدام VPN/خادم حصن لجميع عمليات الوصول الإداري
4. تطبيق المصادقة متعددة العوامل على مستوى الشبكة
5. تعطيل نقاط نهاية Zabbix API غير الضرورية

قواعد الكشف:
1. مراقبة طلبات HTTP إلى Zabbix Frontend للأنماط المعاملة غير العادية في نقاط نهاية التكوين
2. التنبيه على تغييرات التكوين التي تتم خارج نوافذ الصيانة العادية
3. تتبع محاولات المصادقة الفاشلة متبوعة بتعديلات التكوين الناجحة
4. مراقبة الطلبات التي تتجاوز سير عمل واجهة المستخدم العادي (فحوصات الخطوات)
5. تسجيل جميع استدعاءات API إلى نقاط نهاية /api/action و /api/configuration
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 — Access Control Policy (improper access control violation) ECC 2024 A.5.2.1 — User Registration and Access Rights Management ECC 2024 A.5.3.1 — Management of Privileged Access Rights ECC 2024 A.8.2.1 — User Access Management ECC 2024 A.12.4.1 — Event Logging (configuration changes must be logged)
🔵 SAMA CSF
SAMA CSF ID.AC-1 — Access Control Policy and Procedures SAMA CSF ID.AC-2 — Physical and Logical Access Controls SAMA CSF PR.AC-1 — Identities and Credentials Management SAMA CSF PR.AC-4 — Access Rights and Privileges Management SAMA CSF DE.AE-1 — Audit and Accountability
🟡 ISO 27001:2022
ISO 27001:2022 A.5.2 — User Access Management ISO 27001:2022 A.5.3 — Access Control ISO 27001:2022 A.8.2 — Information Security Responsibilities ISO 27001:2022 A.8.3 — Asset Management ISO 27001:2022 A.12.4 — Logging
🟣 PCI DSS v4.0
PCI DSS 2.1 — Configuration Standards for System Components PCI DSS 6.5.10 — Broken Authentication PCI DSS 7.1 — Limit Access to System Components PCI DSS 10.2 — Implement Automated Audit Trails
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Zabbix:Frontend
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS93.10%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-03-08
Published 2022-02-22
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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