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Vulnerabilities

CVE-2017-20238

High
CWE-285 — Weakness Type
Published: Apr 3, 2026  ·  Modified: Apr 10, 2026  ·  Source: NVD
CVSS v3
7.1
🔗 NVD Official
📄 Description (English)

Hirschmann Industrial HiVision versions 06.0.00 and 07.0.00 prior to 06.0.06 and 07.0.01 contains an improper authorization vulnerability that allows read-only users to gain write access to managed devices by bypassing access control mechanisms. Attackers can exploit alternative interfaces such as the web interface or SNMP browser to modify device configurations despite having restricted permissions.

🤖 AI Executive Summary

CVE-2017-20238 is a critical authorization bypass vulnerability in Hirschmann Industrial HiVision that allows read-only users to escalate privileges and gain write access to managed industrial devices. The vulnerability affects versions 06.0.00 and 07.0.00 prior to 06.0.06 and 07.0.01, exploitable through alternative interfaces like web and SNMP. This poses significant risk to Saudi industrial control systems, particularly in energy and critical infrastructure sectors where unauthorized device configuration changes could cause operational disruption.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 9, 2026 08:37
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses critical risk to Saudi Arabia's industrial control systems, particularly affecting: (1) Energy Sector - ARAMCO and downstream oil/gas operations using Hirschmann switches for SCADA/ICS networks; (2) Critical Infrastructure - water treatment, power generation facilities managed through HiVision; (3) Telecom - STC and other operators using industrial networking equipment; (4) Government - critical infrastructure operators under NCA oversight. Unauthorized write access to managed devices could enable configuration tampering, network isolation, or operational disruption in critical systems.
🏢 Affected Saudi Sectors
Energy (Oil & Gas) Critical Infrastructure Utilities (Water/Power) Telecommunications Government/Defense Manufacturing
⚖️ Saudi Risk Score (AI)
8.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all Hirschmann HiVision deployments in your environment (versions 06.0.00, 07.0.00)
2. Restrict network access to HiVision management interfaces (web, SNMP) using firewall rules and network segmentation
3. Implement strong authentication and multi-factor authentication for all management access
4. Disable SNMP write access and restrict SNMP to read-only community strings
5. Audit all user accounts and remove unnecessary read-only accounts

Patching Guidance:
1. Upgrade to Hirschmann HiVision 06.0.06 or 07.0.01 or later immediately
2. Test patches in isolated lab environment before production deployment
3. Schedule maintenance windows for critical systems

Compensating Controls (if patching delayed):
1. Implement network-based access controls restricting management traffic to authorized IPs only
2. Deploy IDS/IPS rules to detect unauthorized configuration changes
3. Enable comprehensive logging and monitoring of all management interface access
4. Implement role-based access control (RBAC) at network level
5. Monitor SNMP traffic for write operations (SET commands)

Detection Rules:
1. Alert on SNMP SET operations from non-administrative sources
2. Monitor HiVision web interface for privilege escalation attempts
3. Track configuration changes initiated by read-only user accounts
4. Log all authentication failures and successful logins to management interfaces
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع نشرات Hirschmann HiVision في بيئتك (الإصدارات 06.0.00، 07.0.00)
2. تقييد الوصول إلى واجهات إدارة HiVision (الويب، SNMP) باستخدام قواعد جدار الحماية وتقسيم الشبكة
3. تطبيق المصادقة القوية والمصادقة متعددة العوامل لجميع الوصول الإداري
4. تعطيل وصول SNMP للكتابة وتقييد SNMP على سلاسل المجتمع للقراءة فقط
5. تدقيق جميع حسابات المستخدمين وإزالة الحسابات غير الضرورية للقراءة فقط

إرشادات التصحيح:
1. الترقية إلى Hirschmann HiVision 06.0.06 أو 07.0.01 أو أحدث على الفور
2. اختبار التصحيحات في بيئة معملية معزولة قبل نشر الإنتاج
3. جدولة نوافذ الصيانة للأنظمة الحرجة

الضوابط البديلة (إذا تأخر التصحيح):
1. تطبيق عناصر التحكم في الوصول المستندة إلى الشبكة لتقييد حركة الإدارة على عناوين IP المصرح بها فقط
2. نشر قواعد IDS/IPS للكشف عن التغييرات غير المصرح بها في الإعدادات
3. تفعيل السجلات الشاملة ومراقبة جميع الوصول إلى واجهة الإدارة
4. تطبيق التحكم في الوصول المستند إلى الأدوار (RBAC) على مستوى الشبكة
5. مراقبة حركة SNMP لعمليات الكتابة (أوامر SET)

قواعد الكشف:
1. تنبيه عمليات SNMP SET من مصادر غير إدارية
2. مراقبة واجهة الويب HiVision لمحاولات تصعيد الامتيازات
3. تتبع التغييرات في الإعدادات التي يبدأها حسابات المستخدمين للقراءة فقط
4. تسجيل جميع فشل المصادقة والتسجيلات الناجحة لواجهات الإدارة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.9.2.1 - User access management and authorization controls ECC 2024 A.9.4.3 - Password management and access control ECC 2024 A.13.1.1 - Network security and segregation ECC 2024 A.12.4.1 - Event logging and monitoring
🔵 SAMA CSF
SAMA CSF ID.AM-1 - Asset management and inventory SAMA CSF PR.AC-1 - Access control policy and procedures SAMA CSF PR.AC-4 - Access rights and privileges management SAMA CSF DE.CM-1 - System monitoring and detection
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access control ISO 27001:2022 A.8.2 - User access management ISO 27001:2022 A.8.3 - User responsibilities ISO 27001:2022 A.8.4 - Access rights review
📊 CVSS Score
7.1
/ 10.0 — High
📊 CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Attack VectorN — None / Network
Attack ComplexityL — Low / Local
Privileges RequiredL — Low / Local
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityL — Low / Local
IntegrityH — High
AvailabilityN — None / Network
📋 Quick Facts
Severity High
CVSS Score7.1
CWECWE-285
EPSS0.00%
Exploit No
Patch ✗ No
Published 2026-04-03
Source Feed nvd
Views 7
🇸🇦 Saudi Risk Score
8.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
CWE-285
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