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Vulnerabilities

CVE-2021-38003

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
Google Chromium V8 Memory Corruption Vulnerability — Google Chromium V8 Engine has a bug in JSON.stringify, where the internal TheHole value can leak to script code, causing memory corruption. This vu
Published: Nov 3, 2021  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

Google Chromium V8 Memory Corruption Vulnerability — Google Chromium V8 Engine has a bug in JSON.stringify, where the internal TheHole value can leak to script code, causing memory corruption. This vulnerability could affect multiple web browsers that utilize Chromium, including, but not limited to, Google Chrome, Microsoft Edge, and Opera.

🤖 AI Executive Summary

CVE-2021-38003 is a critical memory corruption vulnerability in Google Chromium V8's JSON.stringify function that allows the internal TheHole value to leak to script code. With a CVSS score of 9.0 and publicly available exploits, this vulnerability affects all Chromium-based browsers including Chrome, Edge, and Opera. Immediate patching is essential as attackers can achieve remote code execution through malicious web content.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 21, 2026 04:57
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability poses significant risk to Saudi organizations across multiple sectors: Banking sector (SAMA-regulated institutions) faces risk of account compromise and financial fraud through browser-based attacks; Government entities (NCA oversight) could experience data exfiltration and system compromise; Healthcare providers using web-based systems risk patient data breaches; Energy sector (ARAMCO and related entities) could face operational technology disruption; Telecom providers (STC, Mobily) risk infrastructure compromise. The widespread use of Chromium-based browsers in Saudi enterprises and government systems makes this a critical threat requiring immediate attention.
🏢 Affected Saudi Sectors
Banking and Financial Services Government and Public Administration Healthcare Energy and Utilities Telecommunications Education Retail and E-commerce
⚖️ Saudi Risk Score (AI)
9.2
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all systems running Chrome, Edge, Opera, or other Chromium-based browsers in your organization
2. Disable JavaScript execution in browsers if not operationally critical
3. Restrict access to untrusted websites and implement web content filtering

PATCHING GUIDANCE:
1. Update Google Chrome to version 93.0.4577.82 or later
2. Update Microsoft Edge to version 93.0.961.52 or later
3. Update Opera to version 79.0 or later
4. Deploy patches through your organization's patch management system with priority status
5. Verify patch deployment across all endpoints within 48 hours

COMPENSATING CONTROLS (if immediate patching not possible):
1. Implement network-level controls to block access to known malicious domains
2. Deploy endpoint detection and response (EDR) solutions to monitor for exploitation attempts
3. Enforce Content Security Policy (CSP) headers on all web applications
4. Implement browser isolation technology for high-risk users
5. Monitor for suspicious process execution and memory access patterns

DETECTION RULES:
1. Monitor for unusual V8 engine crashes or browser process terminations
2. Alert on attempts to access internal V8 objects or TheHole values
3. Track JSON.stringify calls with suspicious parameters
4. Monitor for unexpected code execution following JSON operations
5. Implement YARA rules to detect exploitation payloads in network traffic
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تقوم بتشغيل Chrome أو Edge أو Opera أو متصفحات أخرى قائمة على Chromium
2. تعطيل تنفيذ JavaScript في المتصفحات إذا لم تكن ضرورية من الناحية التشغيلية
3. تقييد الوصول إلى المواقع غير الموثوقة وتطبيق تصفية محتوى الويب

إرشادات التصحيح:
1. تحديث Google Chrome إلى الإصدار 93.0.4577.82 أو أحدث
2. تحديث Microsoft Edge إلى الإصدار 93.0.961.52 أو أحدث
3. تحديث Opera إلى الإصدار 79.0 أو أحدث
4. نشر التصحيحات من خلال نظام إدارة التصحيحات مع حالة الأولوية
5. التحقق من نشر التصحيحات عبر جميع نقاط النهاية خلال 48 ساعة

الضوابط البديلة (إذا لم يكن التصحيح الفوري ممكنًا):
1. تطبيق الضوابط على مستوى الشبكة لحظر الوصول إلى النطاقات الضارة المعروفة
2. نشر حلول الكشف والاستجابة على نقاط النهاية (EDR)
3. فرض رؤوس سياسة أمان المحتوى (CSP) على جميع تطبيقات الويب
4. تطبيق تكنولوجيا عزل المتصفح للمستخدمين عالي المخاطر
5. مراقبة محاولات تنفيذ الأوامر المريبة وأنماط الوصول إلى الذاكرة

قواعد الكشف:
1. مراقبة أعطال محرك V8 غير العادية أو إنهاء عمليات المتصفح
2. التنبيه على محاولات الوصول إلى كائنات V8 الداخلية أو قيم TheHole
3. تتبع استدعاءات JSON.stringify بمعاملات مريبة
4. مراقبة تنفيذ الأوامر غير المتوقعة بعد عمليات JSON
5. تطبيق قواعد YARA للكشف عن حمولات الاستغلال في حركة المرور
📋 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 and logging of access to information
🔵 SAMA CSF
SAMA CSF ID.RA-1 - Asset Management and Vulnerability Management SAMA CSF PR.IP-12 - Software, firmware, and information integrity mechanisms SAMA CSF DE.CM-1 - The network is monitored to detect potential cybersecurity events
🟡 ISO 27001:2022
ISO 27001:2022 A.12.6.1 - Management of technical vulnerabilities ISO 27001:2022 A.14.2.1 - Secure development policy and procedures ISO 27001:2022 A.8.1.1 - Inventory of assets
🟣 PCI DSS v4.0
PCI DSS 6.2 - Ensure that all system components and software are protected from known vulnerabilities
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Google:Chromium V8
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS71.43%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2021-11-17
Published 2021-11-03
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.2
/ 10.0 — Saudi Risk
Priority: CRITICAL
🏷️ Tags
kev actively-exploited
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