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Vulnerabilities

CVE-2017-12233

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability — There is a vulnerability in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS coul
Published: Mar 3, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Cisco IOS Software Common Industrial Protocol Request Denial-of-Service Vulnerability — There is a vulnerability in the implementation of the Common Industrial Protocol (CIP) feature in Cisco IOS could allow an unauthenticated, remote attacker to cause an affected device to reload, resulting in a denial of service.

🤖 AI Executive Summary

CVE-2017-12233 is a critical denial-of-service vulnerability in Cisco IOS Software's Common Industrial Protocol (CIP) implementation that allows an unauthenticated remote attacker to cause affected devices to reload. With a CVSS score of 9.0 and publicly available exploits, this vulnerability poses an immediate threat to industrial control systems and network infrastructure relying on Cisco IOS with CIP enabled. The vulnerability requires no authentication, making it trivially exploitable by remote attackers targeting industrial networks. Organizations using Cisco IOS devices in OT/ICS environments should prioritize immediate patching.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 7, 2026 20:33
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability has critical implications for Saudi Arabia's industrial and energy sectors, particularly ARAMCO, SABIC, and other petrochemical companies that rely heavily on Cisco IOS devices in their OT/ICS environments with CIP protocol. The energy sector, which forms the backbone of Saudi Arabia's economy, is especially at risk as CIP is widely used in industrial automation and SCADA systems. Government entities under NCA oversight, telecom operators like STC, and water/utilities infrastructure using Cisco networking equipment with industrial protocols are also vulnerable. Given Saudi Arabia's Vision 2030 smart city initiatives and increasing IT/OT convergence, exploitation could disrupt critical national infrastructure.
🏢 Affected Saudi Sectors
Energy Oil & Gas Government Telecommunications Manufacturing Utilities Water & Desalination Transportation
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all Cisco IOS devices with CIP feature enabled using 'show running-config | include cip'
2. Apply Cisco's official security patch immediately — refer to Cisco Security Advisory cisco-sa-20170927-cip
3. If immediate patching is not possible, disable CIP on devices where it is not required: 'no cip enable'

Network Controls:
4. Implement ACLs to restrict CIP traffic (TCP/UDP port 44818) to only authorized industrial endpoints
5. Segment OT/ICS networks from IT networks using firewalls and DMZs
6. Deploy IPS/IDS signatures to detect CIP exploitation attempts

Detection Rules:
7. Monitor for unexpected device reloads and CIP protocol anomalies
8. Create SIEM alerts for unusual traffic patterns on port 44818
9. Implement Snort/Suricata rules for CIP protocol abuse detection

Long-term:
10. Establish a regular patching cycle for all Cisco IOS devices
11. Conduct OT network security assessment and penetration testing
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Cisco IOS التي تم تفعيل ميزة CIP عليها باستخدام 'show running-config | include cip'
2. تطبيق التصحيح الأمني الرسمي من Cisco فوراً — الرجوع إلى تحذير Cisco الأمني cisco-sa-20170927-cip
3. في حال عدم إمكانية التصحيح الفوري، تعطيل CIP على الأجهزة التي لا تحتاجه: 'no cip enable'

ضوابط الشبكة:
4. تطبيق قوائم التحكم بالوصول لتقييد حركة CIP (منفذ TCP/UDP 44818) للأجهزة الصناعية المصرح بها فقط
5. فصل شبكات التقنية التشغيلية عن شبكات تقنية المعلومات باستخدام جدران الحماية والمناطق منزوعة السلاح
6. نشر توقيعات IPS/IDS للكشف عن محاولات استغلال CIP

قواعد الكشف:
7. مراقبة إعادة تشغيل الأجهزة غير المتوقعة وشذوذ بروتوكول CIP
8. إنشاء تنبيهات SIEM لأنماط حركة المرور غير العادية على المنفذ 44818
9. تطبيق قواعد Snort/Suricata للكشف عن إساءة استخدام بروتوكول CIP

على المدى الطويل:
10. إنشاء دورة تصحيح منتظمة لجميع أجهزة Cisco IOS
11. إجراء تقييم أمني واختبار اختراق لشبكات التقنية التشغيلية
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2-3-1 (Network Security) ECC 2-5-1 (Industrial Control Systems Security) ECC 2-2-1 (Vulnerability Management) ECC 2-4-1 (Incident Management)
🔵 SAMA CSF
3.3.3 (Network Security Management) 3.3.5 (Vulnerability Management) 3.4.1 (Incident and Threat Management) 3.3.7 (Infrastructure Security)
🟡 ISO 27001:2022
A.8.9 (Configuration Management) A.8.8 (Management of Technical Vulnerabilities) A.8.20 (Networks Security) A.8.22 (Segregation of Networks)
🟣 PCI DSS v4.0
6.3.3 (Patching Security Vulnerabilities) 11.3 (External and Internal Vulnerability Scanning) 1.3 (Network Access Controls)
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Cisco:IOS software
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS6.54%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-03-24
Published 2022-03-03
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
🏷️ Tags
kev actively-exploited
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