📄 Description (English)
Improper neutralization of CRLF sequences ('CRLF injection') vulnerability in TUBITAK BILGEM Software Technologies Research Institute Pardus allows Authentication Bypass.
This issue affects Pardus: from <=0.6.4 before 0.8.0.
🤖 AI Executive Summary
A CRLF injection vulnerability (CVE-2026-5140) in Pardus software versions ≤0.6.4 allows attackers to bypass authentication mechanisms through improper neutralization of carriage return and line feed sequences. With a CVSS score of 8.8, this high-severity vulnerability poses significant risk to organizations using affected Pardus versions. No patch is currently available, requiring immediate compensating controls and version upgrades to 0.8.0 or later.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 4, 2026 03:49
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi government entities and critical infrastructure operators using Pardus-based systems. High-risk sectors include: (1) Government agencies under NCA oversight relying on Pardus for authentication systems; (2) Critical infrastructure operators (energy, water, telecommunications) using Pardus in operational technology environments; (3) Financial institutions and SAMA-regulated entities if Pardus is integrated into authentication workflows; (4) Healthcare organizations under MOH jurisdiction using Pardus for access control. Authentication bypass could lead to unauthorized access to sensitive systems, data exfiltration, and operational disruption.
🏢 Affected Saudi Sectors
Government
Critical Infrastructure (Energy, Water, Telecommunications)
Banking and Financial Services
Healthcare
Defense and Military
Telecommunications
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all systems running Pardus versions ≤0.6.4 across your organization
2. Isolate or air-gap affected systems from production networks if possible
3. Implement network segmentation to restrict access to Pardus-based authentication services
4. Enable enhanced logging and monitoring on all Pardus instances
PATCHING GUIDANCE:
1. Upgrade to Pardus version 0.8.0 or later immediately
2. If immediate upgrade is not feasible, contact TUBITAK BILGEM for interim security updates
3. Test patches in isolated environments before production deployment
COMPENSATING CONTROLS (if upgrade delayed):
1. Implement Web Application Firewall (WAF) rules to detect and block CRLF injection patterns (\r\n sequences in authentication headers)
2. Deploy reverse proxy with strict input validation on all authentication endpoints
3. Enforce multi-factor authentication (MFA) as secondary authentication layer
4. Implement IP whitelisting for administrative access
5. Deploy intrusion detection/prevention systems (IDS/IPS) with CRLF injection signatures
DETECTION RULES:
1. Monitor for HTTP requests containing %0d%0a or \r\n in authentication parameters
2. Alert on authentication bypass attempts (successful logins without proper credentials)
3. Track unusual authentication header modifications
4. Monitor for session hijacking indicators post-authentication
5. Log all authentication failures and anomalies for forensic analysis
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. حصر جميع الأنظمة التي تعمل بإصدارات Pardus ≤0.6.4 في المنظمة
2. عزل أو فصل الأنظمة المتأثرة عن شبكات الإنتاج إن أمكن
3. تطبيق تقسيم الشبكة لتقييد الوصول إلى خدمات المصادقة القائمة على Pardus
4. تفعيل السجلات المحسّنة والمراقبة على جميع نوى Pardus
إرشادات التصحيح:
1. الترقية إلى إصدار Pardus 0.8.0 أو أحدث فوراً
2. إذا لم تكن الترقية الفورية ممكنة، تواصل مع TUBITAK BILGEM للحصول على تحديثات أمان مؤقتة
3. اختبر التصحيحات في بيئات معزولة قبل نشرها في الإنتاج
الضوابط التعويضية (إذا تأخرت الترقية):
1. تطبيق قواعد جدار حماية تطبيقات الويب (WAF) للكشف عن أنماط حقن CRLF وحجبها
2. نشر وكيل عكسي مع التحقق الصارم من المدخلات على جميع نقاط نهاية المصادقة
3. فرض المصادقة متعددة العوامل (MFA) كطبقة مصادقة ثانوية
4. تطبيق قائمة بيضاء للعناوين IP للوصول الإداري
5. نشر أنظمة كشف/منع الاختراق (IDS/IPS) مع توقيعات حقن CRLF
قواعد الكشف:
1. مراقبة طلبات HTTP التي تحتوي على %0d%0a أو \r\n في معاملات المصادقة
2. تنبيهات محاولات تجاوز المصادقة (تسجيلات دخول ناجحة بدون بيانات اعتماد صحيحة)
3. تتبع تعديلات رؤوس المصادقة غير العادية
4. مراقبة مؤشرات اختطاف الجلسة بعد المصادقة
5. تسجيل جميع فشل المصادقة والشذوذ للتحليل الجنائي
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.9.2.1 - User registration and access rights management
ECC 2024 A.9.4.3 - Password management systems
ECC 2024 A.9.4.4 - Use of privileged utility programs
ECC 2024 A.14.2.1 - Secure development policy
ECC 2024 A.14.2.5 - Secure development environment
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software and hardware inventory
SAMA CSF PR.AC-1 - Access control policy and procedures
SAMA CSF PR.AC-6 - Access control for information systems
SAMA CSF DE.CM-1 - Network monitoring
SAMA CSF RS.MI-2 - Incident response procedures
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access control
ISO 27001:2022 A.8.3 - Cryptography
ISO 27001:2022 A.8.22 - Monitoring
ISO 27001:2022 A.14.2 - Secure development
ISO 27001:2022 A.14.3 - Test data
🟣 PCI DSS v4.0.1
PCI DSS 2.1 - Change default passwords
PCI DSS 6.2 - Security patches
PCI DSS 7.1 - Access control implementation
PCI DSS 8.1 - User identification and authentication
🔗 References & Sources 1