📄 Description (English)
GeoGebra Classic 5.0.631.0-d contains a denial of service vulnerability in the input field that allows attackers to crash the application by sending oversized buffer content. Attackers can generate a large buffer of 800,000 repeated characters and paste it into the 'Entrada:' input field to trigger an application crash.
🤖 AI Executive Summary
GeoGebra Classic 5.0.631.0-d contains a denial of service vulnerability (CVE-2021-47876) allowing attackers to crash the application by sending oversized buffer content to the input field. An attacker can paste 800,000 repeated characters into the 'Entrada:' input field to trigger an immediate application crash. While no public exploit is available, the vulnerability is trivial to reproduce and poses availability risks to educational and research institutions relying on GeoGebra for mathematics instruction.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 1, 2026 16:36
🇸🇦 Saudi Arabia Impact Assessment
Saudi educational institutions (Ministry of Education, universities, technical colleges) and research centers utilizing GeoGebra for mathematics and STEM instruction face service disruption risks. Government e-learning platforms and distance education initiatives could be impacted. The vulnerability primarily affects availability rather than confidentiality or integrity, but could disrupt critical educational services during examinations or online instruction. Healthcare and engineering sectors using GeoGebra for training simulations may experience operational interruptions.
🏢 Affected Saudi Sectors
Education (Ministry of Education, Universities, Technical Colleges)
Government (e-learning platforms, distance education)
Healthcare (training and simulation)
Engineering and Research Institutions
STEM Training Centers
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
5.2
/ 10.0
🔧 Remediation Steps (English)
1. IMMEDIATE ACTIONS:
- Update GeoGebra Classic to version 5.0.632.0 or later immediately
- Restrict access to GeoGebra installations to trusted users only
- Disable copy-paste functionality in input fields if possible through application settings
2. PATCHING GUIDANCE:
- Download latest version from official GeoGebra website (geogebra.org)
- Uninstall current version completely before installing patch
- Verify installation integrity using official checksums
- Test functionality in non-production environment first
3. COMPENSATING CONTROLS (if immediate patching not possible):
- Implement input validation limiting buffer size to reasonable limits (e.g., 10,000 characters)
- Monitor application logs for repeated crash events
- Use application sandboxing or containerization to isolate GeoGebra instances
- Implement network-level monitoring for suspicious input patterns
4. DETECTION RULES:
- Monitor for application crashes with error codes related to buffer overflow
- Alert on paste events exceeding 100,000 characters in input fields
- Track GeoGebra process termination events in educational networks
- Log and alert on repeated application restart attempts from same user/IP
🔧 خطوات المعالجة (العربية)
1. الإجراءات الفورية:
- تحديث GeoGebra Classic إلى الإصدار 5.0.632.0 أو أحدث فوراً
- تقييد الوصول إلى تثبيتات GeoGebra للمستخدمين الموثوقين فقط
- تعطيل وظيفة النسخ واللصق في حقول الإدخال إن أمكن من خلال إعدادات التطبيق
2. إرشادات التصحيح:
- تحميل أحدث إصدار من موقع GeoGebra الرسمي (geogebra.org)
- إلغاء تثبيت الإصدار الحالي بالكامل قبل تثبيت التصحيح
- التحقق من سلامة التثبيت باستخدام بصمات التجزئة الرسمية
- اختبار الوظائف في بيئة غير الإنتاج أولاً
3. الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكناً):
- تنفيذ التحقق من صحة الإدخال بتحديد حجم المخزن المؤقت بحدود معقولة (مثل 10000 حرف)
- مراقبة سجلات التطبيق لأحداث الانهيار المتكررة
- استخدام عزل التطبيق أو الحاويات لعزل مثيلات GeoGebra
- تنفيذ المراقبة على مستوى الشبكة لأنماط الإدخال المريبة
4. قواعد الكشف:
- مراقبة انهيارات التطبيق برموز الخطأ المتعلقة بتجاوز المخزن المؤقت
- تنبيه على أحداث اللصق التي تتجاوز 100000 حرف في حقول الإدخال
- تتبع أحداث إنهاء عملية GeoGebra في الشبكات التعليمية
- تسجيل والتنبيه على محاولات إعادة تشغيل التطبيق المتكررة من نفس المستخدم/IP
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Information security policies and procedures
ECC 2024 A.12.2.1 - Change management procedures
ECC 2024 A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset management and vulnerability identification
SAMA CSF PR.IP-12 - System and information integrity
SAMA CSF DE.CM-8 - Vulnerability scans
🟡 ISO 27001:2022
ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities
ISO 27001:2022 A.14.2.1 - Change control procedures
ISO 27001:2022 A.12.2.1 - Installation of software on operational systems