📄 Description (English)
Cisco Adaptive Security Appliance (ASA) Denial-of-Service Vulnerability — Cisco Adaptive Security Appliance (ASA) contains an improper input validation vulnerability with HTTP URLs. Exploitation could allow an attacker to cause a denial-of-service (DoS) condition or information disclosure.
🤖 AI Executive Summary
CVE-2018-0296 is a critical vulnerability in Cisco Adaptive Security Appliance (ASA) that allows unauthenticated remote attackers to cause a denial-of-service condition or obtain sensitive information through specially crafted HTTP URLs due to improper input validation. This vulnerability has known active exploits in the wild and has been added to CISA's Known Exploited Vulnerabilities catalog. With a CVSS score of 9.0, it poses an immediate threat to any organization using Cisco ASA firewalls, which are widely deployed across Saudi Arabia's critical infrastructure. Patches are available from Cisco and should be applied immediately.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 9, 2026 19:24
🇸🇦 Saudi Arabia Impact Assessment
Cisco ASA firewalls are extensively deployed across Saudi Arabia's critical sectors including banking institutions regulated by SAMA, government entities under NCA oversight, energy sector organizations including Saudi Aramco and its contractors, telecom providers like STC/Mobily/Zain, and healthcare organizations. This vulnerability could allow attackers to disrupt VPN access, bypass security perimeters, or extract sensitive directory traversal information from ASA devices. Given that ASA devices often serve as the primary perimeter defense and VPN concentrator for remote access, exploitation could cause widespread service disruption across Saudi organizations, particularly impacting remote workforce connectivity and inter-site communications. The availability of public exploit code significantly increases the risk of opportunistic attacks against Saudi infrastructure.
🏢 Affected Saudi Sectors
Banking
Government
Energy
Telecommunications
Healthcare
Defense
Education
Retail
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Cisco ASA devices in your environment and determine their software versions
2. Apply Cisco security advisory cisco-sa-20180606-asaftd patches immediately
3. If immediate patching is not possible, implement the following compensating controls:
- Restrict HTTP/HTTPS management access to trusted IP addresses only
- Disable the WebVPN/AnyConnect portal if not required
- Use ACLs to limit access to the ASA management interface
PATCHING GUIDANCE:
- Upgrade to the fixed ASA software versions as specified in Cisco's advisory
- Test patches in a staging environment before production deployment
- Schedule emergency maintenance windows for internet-facing ASA devices
DETECTION RULES:
- Monitor for unusual HTTP requests containing directory traversal patterns (e.g., '+CSCOU+', '+CSCOE+') targeting ASA devices
- Implement IDS/IPS signatures for CVE-2018-0296 exploitation attempts
- Monitor ASA device logs for unexpected reloads or high CPU utilization
- Review Snort SIDs related to this vulnerability
POST-PATCH VERIFICATION:
- Verify ASA devices are running patched firmware versions
- Conduct vulnerability scans to confirm remediation
- Review logs for any indicators of prior compromise
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أجهزة Cisco ASA في بيئتك وتحديد إصدارات البرامج الخاصة بها
2. تطبيق تصحيحات استشارة Cisco الأمنية cisco-sa-20180606-asaftd فوراً
3. إذا لم يكن التصحيح الفوري ممكناً، قم بتنفيذ الضوابط التعويضية التالية:
- تقييد وصول إدارة HTTP/HTTPS إلى عناوين IP الموثوقة فقط
- تعطيل بوابة WebVPN/AnyConnect إذا لم تكن مطلوبة
- استخدام قوائم التحكم في الوصول لتقييد الوصول إلى واجهة إدارة ASA
إرشادات التصحيح:
- الترقية إلى إصدارات برامج ASA المصححة كما هو محدد في استشارة Cisco
- اختبار التصحيحات في بيئة اختبار قبل النشر في الإنتاج
- جدولة نوافذ صيانة طارئة لأجهزة ASA المواجهة للإنترنت
قواعد الكشف:
- مراقبة طلبات HTTP غير العادية التي تحتوي على أنماط اجتياز الدليل مثل '+CSCOU+' و '+CSCOE+' التي تستهدف أجهزة ASA
- تنفيذ توقيعات IDS/IPS لمحاولات استغلال CVE-2018-0296
- مراقبة سجلات أجهزة ASA لإعادة التشغيل غير المتوقعة أو الاستخدام العالي للمعالج
التحقق بعد التصحيح:
- التحقق من أن أجهزة ASA تعمل بإصدارات البرامج الثابتة المصححة
- إجراء فحوصات الثغرات لتأكيد المعالجة
- مراجعة السجلات لأي مؤشرات على اختراق سابق
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2-3-1 (Network Security)
ECC 2-3-4 (Patch Management)
ECC 2-5-1 (Vulnerability Management)
ECC 2-2-1 (Asset Management)
ECC 2-6-1 (Incident Management)
🔵 SAMA CSF
SAMA CSF 3.3.3 (Patch Management)
SAMA CSF 3.3.4 (Vulnerability Management)
SAMA CSF 3.3.7 (Network Security Management)
SAMA CSF 3.4.1 (Incident and Threat Management)
SAMA CSF 3.3.1 (Infrastructure Security)
🟡 ISO 27001:2022
A.8.8 (Management of technical vulnerabilities)
A.8.9 (Configuration management)
A.8.20 (Networks security)
A.8.21 (Security of network services)
A.5.24 (Information security incident management planning and preparation)
🟣 PCI DSS v4.0
PCI DSS 6.3.3 (Install critical security patches within one month)
PCI DSS 1.2.1 (Restrict inbound and outbound traffic)
PCI DSS 11.3 (External and internal vulnerability scanning)
PCI DSS 1.3.1 (Implement a DMZ to limit inbound traffic)
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Cisco:Adaptive Security Appliance (ASA)