📄 Description (English)
Linux Kernel PIE Stack Buffer Corruption Vulnerability — Linux kernel contains a position-independent executable (PIE) stack buffer corruption vulnerability in load_elf_ binary() that allows a local attacker to escalate privileges.
🤖 AI Executive Summary
CVE-2017-1000253 is a critical Linux kernel vulnerability in the load_elf_binary() function that allows local attackers to achieve privilege escalation through PIE stack buffer corruption. With a CVSS score of 9.0 and publicly available exploits, this vulnerability poses an immediate threat to any system running affected Linux kernel versions. The flaw affects position-independent executable (PIE) handling and can allow unprivileged users to gain root access. This vulnerability has been actively exploited in the wild and was added to CISA's Known Exploited Vulnerabilities catalog.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 7, 2026 11:17
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability has severe implications for Saudi organizations running Linux-based infrastructure. Government entities regulated by NCA are at high risk as many government servers and cloud infrastructure run Linux. Energy sector organizations including ARAMCO and other oil & gas companies using Linux-based SCADA systems and operational technology are particularly vulnerable. Telecom providers like STC, Mobily, and Zain running Linux-based network infrastructure face privilege escalation risks. Banking institutions under SAMA regulation using Linux servers for core banking and transaction processing are exposed. Healthcare systems and smart city initiatives (NEOM, Vision 2030 projects) relying on Linux infrastructure are also at risk. Any insider threat or compromised low-privilege account can be escalated to full root access.
🏢 Affected Saudi Sectors
Government
Energy
Banking
Telecommunications
Healthcare
Defense
Education
Cloud Service Providers
⚖️ Saudi Risk Score (AI)
8.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all Linux systems running kernel versions prior to 4.11.5 (upstream fix) or unpatched distribution kernels
2. Prioritize patching internet-facing and critical infrastructure systems
PATCHING GUIDANCE:
1. Update Linux kernel to version 4.11.5 or later
2. For RHEL/CentOS: Apply RHSA-2017:2793, RHSA-2017:2794, RHSA-2017:2795
3. For Ubuntu: Apply USN-3422-1 and related security updates
4. For SUSE: Apply relevant SUSE security advisories
5. Reboot systems after kernel update
COMPENSATING CONTROLS (if immediate patching is not possible):
1. Restrict local access to critical systems — minimize user accounts
2. Implement strict SELinux/AppArmor policies to limit privilege escalation
3. Enable kernel address space layout randomization (KASLR)
4. Monitor for suspicious process execution with elevated privileges
5. Implement network segmentation to limit lateral movement post-exploitation
DETECTION RULES:
1. Monitor for unusual ELF binary loading patterns in kernel logs
2. Alert on unexpected privilege escalation events (auditd rules for execve with uid changes)
3. Deploy YARA rules for known exploit binaries
4. Monitor for processes spawning with unexpected root privileges
5. Implement auditd rule: -a always,exit -F arch=b64 -S execve -F euid=0 -F auid>=1000 -k privilege_escalation
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع أنظمة لينكس التي تعمل بإصدارات النواة الأقدم من 4.11.5 أو النوى غير المحدثة
2. إعطاء الأولوية لتحديث الأنظمة المواجهة للإنترنت والبنية التحتية الحرجة
إرشادات التحديث:
1. تحديث نواة لينكس إلى الإصدار 4.11.5 أو أحدث
2. لأنظمة RHEL/CentOS: تطبيق RHSA-2017:2793 و RHSA-2017:2794 و RHSA-2017:2795
3. لأنظمة Ubuntu: تطبيق USN-3422-1 والتحديثات الأمنية ذات الصلة
4. لأنظمة SUSE: تطبيق إرشادات الأمان ذات الصلة
5. إعادة تشغيل الأنظمة بعد تحديث النواة
الضوابط التعويضية (في حال عدم إمكانية التحديث الفوري):
1. تقييد الوصول المحلي للأنظمة الحرجة وتقليل حسابات المستخدمين
2. تطبيق سياسات SELinux/AppArmor صارمة للحد من تصعيد الصلاحيات
3. تفعيل عشوائية تخطيط مساحة عناوين النواة (KASLR)
4. مراقبة تنفيذ العمليات المشبوهة بصلاحيات مرتفعة
5. تطبيق تجزئة الشبكة للحد من الحركة الجانبية بعد الاستغلال
قواعد الكشف:
1. مراقبة أنماط تحميل ملفات ELF غير العادية في سجلات النواة
2. التنبيه عند أحداث تصعيد الصلاحيات غير المتوقعة
3. نشر قواعد YARA للملفات التنفيذية المعروفة للاستغلال
4. مراقبة العمليات التي تعمل بصلاحيات الجذر بشكل غير متوقع
5. تطبيق قواعد auditd لمراقبة تصعيد الصلاحيات
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-2:3-1 (Patch Management)
ECC-2:3-4 (Vulnerability Management)
ECC-2:2-1 (Access Control)
ECC-2:5-1 (System Hardening)
ECC-2:4-1 (Security Monitoring)
🔵 SAMA CSF
3.3.3 (Patch Management)
3.3.4 (Vulnerability Management)
3.3.7 (Access Control)
3.4.1 (Security Event Monitoring)
3.3.5 (System Hardening)
🟡 ISO 27001:2022
A.8.8 (Management of Technical Vulnerabilities)
A.8.5 (Secure Authentication)
A.8.9 (Configuration Management)
A.8.15 (Logging)
A.8.2 (Privileged Access Rights)
🟣 PCI DSS v4.0
6.3.3 (Patching Security Vulnerabilities)
6.2 (Security Patches)
10.2 (Audit Trails)
7.1 (Restrict Access)
11.5 (File Integrity Monitoring)
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Linux:Kernel