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Vulnerabilities

CVE-2019-3568

Critical 🇺🇸 CISA KEV ⚡ Exploit Available
WhatsApp VOIP Stack Buffer Overflow Vulnerability — A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target p
Published: Apr 19, 2022  ·  Source: CISA_KEV
CVSS v3
9.0
🔗 NVD Official
📄 Description (English)

WhatsApp VOIP Stack Buffer Overflow Vulnerability — A buffer overflow vulnerability in WhatsApp VOIP stack allowed remote code execution via specially crafted series of RTCP packets sent to a target phone number.

🤖 AI Executive Summary

CVE-2019-3568 is a critical buffer overflow vulnerability in WhatsApp's VOIP stack that enables remote code execution through maliciously crafted RTCP packets. An attacker only needs the target's phone number to exploit this vulnerability — no user interaction is required, making it exceptionally dangerous. This vulnerability was actively exploited in the wild by sophisticated threat actors, including NSO Group's Pegasus spyware, to compromise high-value targets. Given the widespread use of WhatsApp across Saudi Arabia and the Gulf region, this represents a severe threat to individuals and organizations alike.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: Apr 15, 2026 15:54
🇸🇦 Saudi Arabia Impact Assessment
Saudi Arabia faces exceptionally high exposure to this vulnerability given WhatsApp's near-universal adoption across all sectors. Government and NCA-regulated entities are at critical risk as officials and employees routinely use WhatsApp for both personal and semi-official communications. Banking and SAMA-regulated institutions face risks of credential theft and lateral movement if employee devices are compromised. Saudi Aramco and energy sector personnel using WhatsApp on corporate-connected devices could expose operational technology networks. Healthcare organizations storing patient data on mobile devices are at risk of data breaches violating PDPL regulations. Telecom operators including STC and Zain face risks of subscriber data exposure. The zero-click nature of this exploit makes it particularly dangerous for high-profile Saudi government officials, journalists, and executives, consistent with documented Pegasus spyware campaigns targeting Gulf region individuals.
🏢 Affected Saudi Sectors
Government Banking Energy Telecom Healthcare Defense Media Education Retail
⚖️ Saudi Risk Score (AI)
9.7
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Immediately update WhatsApp to version 2.19.51 or later on all Android devices
2. Update WhatsApp Business and WhatsApp for iOS to patched versions immediately
3. Audit all corporate-issued mobile devices for WhatsApp installation and version compliance
4. Assume compromise on any device running vulnerable WhatsApp versions that received unexpected calls

PATCHING GUIDANCE:
1. Android: Update to WhatsApp 2.19.51 or later via Google Play Store
2. iOS: Update to WhatsApp 2.19.51 or later via Apple App Store
3. WhatsApp Business: Apply equivalent patches for business variant
4. Enforce MDM policies to mandate minimum app version compliance
5. Deploy automated patch compliance reporting via MDM solutions (Jamf, Intune, MobileIron)

COMPENSATING CONTROLS:
1. If patching is delayed, consider temporarily disabling WhatsApp on corporate devices via MDM
2. Implement network-level monitoring for anomalous RTCP traffic patterns
3. Deploy mobile threat defense (MTD) solutions such as Lookout, Zimperium, or CrowdStrike Falcon for Mobile
4. Restrict WhatsApp installation on devices with access to sensitive corporate systems
5. Implement zero-trust network access (ZTNA) to limit blast radius of compromised mobile devices

DETECTION RULES:
1. Monitor for unexpected WhatsApp VOIP calls followed by process spawning on mobile devices
2. Deploy EDR/MTD solutions capable of detecting anomalous process execution from WhatsApp
3. Monitor network traffic for unusual RTCP packet sequences targeting mobile devices
4. Alert on WhatsApp processes spawning child processes or accessing sensitive system APIs
5. Review MDM logs for devices that may have received suspicious calls during the vulnerability window
6. Conduct forensic analysis on high-value target devices using tools like MVT (Mobile Verification Toolkit) to detect Pegasus indicators
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديث واتساب فوراً إلى الإصدار 2.19.51 أو أحدث على جميع أجهزة أندرويد
2. تحديث واتساب للأعمال وواتساب لنظام iOS إلى الإصدارات المُصححة فوراً
3. مراجعة جميع الأجهزة المحمولة الصادرة من الشركة للتحقق من تثبيت واتساب وامتثاله للإصدار المطلوب
4. افتراض الاختراق على أي جهاز يعمل بإصدارات واتساب المعرضة للخطر والتي تلقت مكالمات غير متوقعة

إرشادات التصحيح:
1. أندرويد: التحديث إلى واتساب 2.19.51 أو أحدث عبر متجر Google Play
2. iOS: التحديث إلى واتساب 2.19.51 أو أحدث عبر متجر Apple App Store
3. واتساب للأعمال: تطبيق التصحيحات المكافئة للنسخة التجارية
4. فرض سياسات MDM لضمان الامتثال لإصدار التطبيق الأدنى المطلوب
5. نشر تقارير امتثال التصحيح الآلية عبر حلول MDM

ضوابط التعويض:
1. في حال تأخر التصحيح، النظر في تعطيل واتساب مؤقتاً على الأجهزة المؤسسية عبر MDM
2. تطبيق مراقبة على مستوى الشبكة لأنماط حركة مرور RTCP الشاذة
3. نشر حلول الدفاع عن التهديدات المحمولة مثل Lookout أو Zimperium أو CrowdStrike Falcon
4. تقييد تثبيت واتساب على الأجهزة التي تصل إلى الأنظمة المؤسسية الحساسة
5. تطبيق الوصول إلى الشبكة بدون ثقة لتحديد نطاق الأجهزة المخترقة

قواعد الكشف:
1. مراقبة مكالمات VOIP غير المتوقعة عبر واتساب يعقبها تشغيل عمليات على الأجهزة المحمولة
2. نشر حلول EDR/MTD القادرة على اكتشاف تنفيذ العمليات الشاذة من واتساب
3. مراقبة حركة مرور الشبكة بحثاً عن تسلسلات حزم RTCP غير عادية
4. التنبيه عند قيام عمليات واتساب بإنشاء عمليات فرعية أو الوصول إلى واجهات برمجة النظام الحساسة
5. مراجعة سجلات MDM للأجهزة التي ربما تلقت مكالمات مشبوهة
6. إجراء تحليل جنائي على أجهزة الأهداف عالية القيمة باستخدام أدوات مثل MVT للكشف عن مؤشرات Pegasus
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC-2-1: Cybersecurity Risk Management ECC-3-3: Mobile Device Security ECC-3-2: Endpoint Security ECC-4-1: Vulnerability Management ECC-4-2: Patch Management ECC-3-1: Asset Management — Mobile Devices ECC-2-3: Cybersecurity Incident Management
🔵 SAMA CSF
3.3.6 — Vulnerability Management 3.3.7 — Patch Management 3.3.5 — Mobile Device Security 3.4.2 — Incident Management 3.3.2 — Endpoint Security 3.2.1 — Cybersecurity Risk Assessment
🟡 ISO 27001:2022
A.8.8 — Management of Technical Vulnerabilities A.8.1 — User Endpoint Devices A.8.7 — Protection Against Malware A.5.30 — ICT Readiness for Business Continuity A.6.8 — Information Security Event Reporting A.8.16 — Monitoring Activities
🟣 PCI DSS v4.0
Requirement 6.3 — Security Vulnerabilities are Identified and Addressed Requirement 6.3.3 — All System Components Protected from Known Vulnerabilities via Patching Requirement 12.3.2 — Risk Assessment for Mobile Devices Requirement 5.2 — Malicious Software Prevention
🔗 References & Sources 0
No references.
📦 Affected Products / CPE 1 entries
Meta Platforms:WhatsApp
📊 CVSS Score
9.0
/ 10.0 — Critical
📋 Quick Facts
Severity Critical
CVSS Score9.0
EPSS45.56%
Exploit ✓ Yes
Patch ✓ Yes
CISA KEV🇺🇸 Yes
KEV Due Date2022-05-10
Published 2022-04-19
Source Feed cisa_kev
Views 1
🇸🇦 Saudi Risk Score
9.7
/ 10.0 — Saudi Risk
🏷️ Tags
kev actively-exploited
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