📄 Description (English)
A vulnerability was determined in Zaher1307 tiny_web_server up to 8d77b1044a0ca3a5297d8726ac8aa2cf944d481b. This affects the function tiny_web_server/tiny.c of the file tiny_web_server/tiny.c of the component URL Handler. This manipulation causes out-of-bounds write. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. Continious delivery with rolling releases is used by this product. Therefore, no version details of affected nor updated releases are available. The project was informed of the problem early through an issue report but has not responded yet.
🤖 AI Executive Summary
A critical out-of-bounds write vulnerability (CVE-2026-2940) exists in Zaher1307 tiny_web_server affecting the URL handler component with a CVSS score of 7.3. The vulnerability allows remote attackers to write beyond allocated memory boundaries, potentially enabling code execution or denial of service. With public disclosure and no vendor response, immediate assessment and mitigation are required for any Saudi organizations utilizing this web server component.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 5, 2026 19:32
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi government agencies, educational institutions, and small-to-medium enterprises (SMEs) that may have deployed tiny_web_server for internal web services or IoT applications. Critical impact potential for: (1) Government/NCA systems if used in legacy web infrastructure; (2) Healthcare sector (MOH) if integrated into medical device web interfaces; (3) Telecom/STC if used in network management interfaces; (4) Energy sector if deployed in SCADA/ICS web components. The lack of vendor response and continuous delivery model creates uncertainty regarding patch availability and deployment timelines.
🏢 Affected Saudi Sectors
Government/NCA
Healthcare/MOH
Education
Telecom/STC
Energy/ARAMCO
SMEs with web services
IoT/Embedded Systems
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
7.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Conduct inventory of all systems running Zaher1307 tiny_web_server across your organization
2. Isolate or restrict network access to affected web server instances
3. Monitor for suspicious URL requests and out-of-bounds write attempts in web server logs
4. Implement Web Application Firewall (WAF) rules to filter malformed URL requests
PATCHING GUIDANCE:
1. Check the official Zaher1307 GitHub repository for the latest commit beyond 8d77b1044a0ca3a5297d8726ac8aa2cf944d481b
2. If patch is available, test in non-production environment before deployment
3. If no patch available, consider replacing tiny_web_server with maintained alternatives (nginx, Apache)
4. Document all deployment locations for compliance tracking
COMPENSATING CONTROLS:
1. Deploy network segmentation to limit exposure of affected servers
2. Implement strict input validation and URL length restrictions at network perimeter
3. Enable memory protection mechanisms (ASLR, DEP/NX) on host systems
4. Deploy intrusion detection signatures for out-of-bounds write attempts
5. Implement rate limiting on URL requests
DETECTION RULES:
1. Monitor for HTTP requests with unusually long URLs (>2048 characters)
2. Alert on buffer overflow patterns in web server error logs
3. Track segmentation faults or memory access violations in tiny_web_server processes
4. Monitor for unexpected child process spawning from web server
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. إجراء جرد شامل لجميع الأنظمة التي تعمل بخادم Zaher1307 tiny_web_server
2. عزل أو تقييد الوصول الشبكي لنسخ خادم الويب المتأثرة
3. مراقبة طلبات URL المريبة ومحاولات الكتابة خارج الحدود في سجلات خادم الويب
4. تطبيق قواعد جدار حماية تطبيقات الويب لتصفية طلبات URL المشوهة
إرشادات التصحيح:
1. التحقق من مستودع Zaher1307 GitHub الرسمي للحصول على أحدث إصدار
2. اختبار التصحيح في بيئة غير الإنتاج قبل النشر
3. إذا لم يكن التصحيح متاحاً، استبدل خادم الويب ببدائل موثوقة
4. توثيق جميع مواقع النشر لتتبع الامتثال
الضوابط البديلة:
1. تطبيق تقسيم الشبكة لتقليل التعرض
2. تطبيق التحقق الصارم من المدخلات وتقييد طول عناوين URL
3. تفعيل آليات حماية الذاكرة على الأنظمة المضيفة
4. نشر توقيعات كشف الاختراق
5. تطبيق تحديد معدل الطلبات
قواعد الكشف:
1. مراقبة طلبات HTTP بعناوين URL طويلة بشكل غير عادي
2. تنبيهات على أنماط تجاوز المخزن المؤقت
3. تتبع أخطاء التقسيم في عمليات خادم الويب
4. مراقبة توليد عمليات فرعية غير متوقعة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
ECC 2024 A.14.2.1 - Secure development policy
ECC 2024 A.12.2.1 - Monitoring of systems and applications
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset Management and Vulnerability Identification
SAMA CSF PR.PT-2 - System and Communications Protection
SAMA CSF DE.CM-1 - Detection and Analysis
🟡 ISO 27001:2022
ISO 27001:2022 A.12.2.1 - Monitoring of information systems
ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities
ISO 27001:2022 A.14.2.1 - Secure development policy and procedures
🟣 PCI DSS v4.0.1
PCI DSS 6.2 - Security patches and updates
PCI DSS 11.2 - Vulnerability scanning
🔗 References & Sources 6
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https://github.com/Zaher1307/tiny_web_server/
cna@vuldb.com
https://github.com/Zaher1307/tiny_web_server/issues/1
cna@vuldb.com
https://github.com/Zaher1307/tiny_web_server/issues/1#issue-3924357507
cna@vuldb.com
https://vuldb.com/?ctiid.347312
cna@vuldb.com
https://vuldb.com/?id.347312
cna@vuldb.com
https://vuldb.com/?submit.756036
cna@vuldb.com