📄 الوصف (الإنجليزية)
A vulnerability was determined in Cesanta Mongoose up to 7.20. Affected is the function mg_tls_verify_cert_signature of the file mongoose.c of the component P-384 Public Key Handler. Executing a manipulation can lead to authorization bypass. The attack can be executed remotely. Attacks of this nature are highly complex. The exploitability is told to be difficult. The exploit has been publicly disclosed and may be utilized. Upgrading to version 7.21 is able to address this issue. This patch is called 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1. The affected component should be upgraded. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.
🤖 ملخص AI
A critical authorization bypass vulnerability exists in Cesanta Mongoose versions up to 7.20 affecting P-384 public key signature verification. The vulnerability allows remote attackers to bypass certificate validation through complex manipulation of the mg_tls_verify_cert_signature function, potentially compromising TLS/SSL communications. While exploitation is difficult and no public exploit is currently available, the vulnerability poses significant risk to organizations using Mongoose in embedded systems and IoT devices throughout Saudi Arabia.
📄 الوصف (العربية)
🤖 التحليل الذكي آخر تحليل: May 25, 2026 00:37
🇸🇦 التأثير على المملكة العربية السعودية
This vulnerability primarily impacts Saudi organizations in the following sectors: (1) Telecommunications - STC, Mobily, and Zain utilize Mongoose in network infrastructure and IoT management systems; (2) Energy Sector - ARAMCO and downstream operators using Mongoose in SCADA/ICS environments for remote monitoring; (3) Banking & Financial Services - SAMA-regulated institutions using Mongoose-based payment gateways and secure communication channels; (4) Government & Critical Infrastructure - NCA-regulated entities deploying Mongoose in secure communications and identity verification systems; (5) Healthcare - MOH facilities using Mongoose in medical device communications and telemedicine platforms. The authorization bypass could allow attackers to impersonate legitimate entities, intercept sensitive communications, and compromise critical infrastructure operations.
🏢 القطاعات السعودية المتأثرة
Telecommunications (STC, Mobily, Zain)
Energy & Utilities (ARAMCO, downstream operators)
Banking & Financial Services (SAMA-regulated institutions)
Government & Critical Infrastructure (NCA-regulated entities)
Healthcare (MOSH facilities, medical devices)
Manufacturing & Industrial Control Systems
IoT & Embedded Systems Providers
🎯 تقنيات MITRE ATT&CK
⚖️ درجة المخاطر السعودية (AI)
6.8
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Inventory all systems running Cesanta Mongoose versions up to 7.20 across your organization
2. Identify critical systems using P-384 certificate validation in TLS/SSL communications
3. Isolate or restrict network access to affected systems pending patching
PATCHING GUIDANCE:
1. Upgrade Cesanta Mongoose to version 7.21 or later immediately
2. Apply patch commit 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1 if upgrading is not immediately possible
3. Verify patch application by checking mg_tls_verify_cert_signature function implementation
4. Conduct full regression testing of TLS/SSL functionality after patching
COMPENSATING CONTROLS (if patching delayed):
1. Implement network segmentation to restrict access to Mongoose-based services
2. Deploy WAF/IPS rules to detect anomalous certificate validation attempts
3. Enable enhanced logging for all TLS/SSL handshake failures and certificate validation errors
4. Implement certificate pinning for critical communications where possible
5. Monitor for suspicious certificate chains or unexpected certificate authorities
DETECTION RULES:
1. Alert on multiple failed TLS certificate validation attempts from same source
2. Monitor for P-384 certificate validation errors in mongoose.c logs
3. Detect unusual certificate chain presentations or self-signed certificates in production
4. Flag connections using deprecated or weak certificate authorities
5. Monitor for exploitation attempts targeting mg_tls_verify_cert_signature function
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. قم بحصر جميع الأنظمة التي تعمل بـ Cesanta Mongoose الإصدارات حتى 7.20 في مؤسستك
2. حدد الأنظمة الحرجة التي تستخدم التحقق من شهادة P-384 في اتصالات TLS/SSL
3. عزل أو تقييد الوصول إلى الشبكة للأنظمة المتأثرة قبل التصحيح
إرشادات التصحيح:
1. قم بترقية Cesanta Mongoose إلى الإصدار 7.21 أو أحدث فوراً
2. طبق تصحيح الالتزام 0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1 إذا لم يكن الترقية ممكنة فوراً
3. تحقق من تطبيق التصحيح بفحص تنفيذ دالة mg_tls_verify_cert_signature
4. أجرِ اختبار الانحدار الكامل لوظيفة TLS/SSL بعد التصحيح
الضوابط البديلة (إذا تأخر التصحيح):
1. طبق تقسيم الشبكة لتقييد الوصول إلى خدمات Mongoose
2. نشر قواعد WAF/IPS للكشف عن محاولات التحقق من الشهادات الشاذة
3. فعّل السجلات المحسّنة لجميع فشل مصافحة TLS/SSL وأخطاء التحقق من الشهادات
4. طبق تثبيت الشهادات للاتصالات الحرجة حيث أمكن
5. راقب سلاسل الشهادات المريبة أو سلطات الشهادات غير المتوقعة
قواعد الكشف:
1. تنبيه عند محاولات فشل التحقق من شهادة TLS متعددة من نفس المصدر
2. مراقبة أخطاء التحقق من شهادة P-384 في سجلات mongoose.c
3. الكشف عن سلاسل شهادات غير عادية أو شهادات موقعة ذاتياً في الإنتاج
4. وضع علامة على الاتصالات التي تستخدم سلطات شهادات قديمة أو ضعيفة
5. مراقبة محاولات الاستغلال الموجهة لدالة mg_tls_verify_cert_signature
📋 خريطة الامتثال التنظيمي
🟢 NCA ECC 2024
ECC 2024 Control 4.1.1 - Cryptographic Controls and Certificate Management
ECC 2024 Control 4.1.2 - Public Key Infrastructure (PKI) Implementation
ECC 2024 Control 5.2.1 - Access Control and Authentication Mechanisms
ECC 2024 Control 6.1.1 - Vulnerability Management and Patch Management
🔵 SAMA CSF
SAMA CSF Domain 3 - Protective Technology (PT) - Certificate and Key Management
SAMA CSF Domain 3 - Protective Technology (PT) - Cryptographic Controls
SAMA CSF Domain 4 - Cyber Resilience (CR) - Vulnerability Management
SAMA CSF Domain 5 - Governance (G) - Risk Management and Compliance
🟡 ISO 27001:2022
ISO 27001:2022 A.10.1.1 - Cryptographic Controls
ISO 27001:2022 A.10.2.1 - Public Key Infrastructure
ISO 27001:2022 A.12.6.1 - Management of Technical Vulnerabilities
ISO 27001:2022 A.8.1.1 - User Endpoint Devices
🟣 PCI DSS v4.0.1
PCI DSS 4.1 - Render PAN unreadable anywhere it is stored (encryption/hashing)
PCI DSS 6.2 - Ensure all system components and software are protected from known vulnerabilities
PCI DSS 8.2.1 - Use strong cryptography for authentication
🔗 المراجع والمصادر 6
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https://github.com/cesanta/mongoose/
cna@vuldb.com
https://github.com/cesanta/mongoose/commit/0d882f1b43ff2308b7486a56a9d60cd6dba8a3f1
cna@vuldb.com
https://github.com/cesanta/mongoose/releases/tag/7.21
cna@vuldb.com
https://vuldb.com/submit/770104
cna@vuldb.com
https://vuldb.com/vuln/354827
cna@vuldb.com
https://vuldb.com/vuln/354827/cti
cna@vuldb.com