📄 Description (English)
BulletProof FTP Server 2019.0.0.50 contains a denial of service vulnerability in the SMTP configuration interface that allows local attackers to crash the application by supplying an oversized string. Attackers can input a buffer of 257 'A' characters in the SMTP Server field and trigger a crash by clicking the Test button.
🤖 AI Executive Summary
BulletProof FTP Server 2019.0.0.50 contains a local denial of service vulnerability in its SMTP configuration interface that allows attackers to crash the application through buffer overflow. An attacker with local access can input an oversized string (257+ characters) in the SMTP Server field to trigger application crash. While requiring local access and lacking public exploits, this vulnerability poses operational risk to organizations relying on this FTP server for critical file transfer operations.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: May 25, 2026 03:02
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily impacts Saudi organizations using BulletProof FTP Server for critical file transfer operations, particularly in: Government agencies (NCA, CITC) managing secure document exchange; Banking sector (SAMA-regulated institutions) for secure file transfers; Energy sector (ARAMCO, downstream companies) for operational data exchange; Telecom operators (STC, Mobily, Zain) for network management file transfers. The local DoS nature limits external attack surface but poses insider threat risk and operational continuity concerns for organizations dependent on FTP services.
🏢 Affected Saudi Sectors
Government
Banking
Energy
Telecommunications
Healthcare
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
4.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all systems running BulletProof FTP Server 2019.0.0.50 and document their criticality
2. Restrict local access to FTP server configuration interfaces through OS-level access controls
3. Implement principle of least privilege for user accounts with FTP server access
4. Monitor FTP server process for unexpected crashes and log all configuration changes
Patching Guidance:
1. Contact BulletProof vendor for available patches or upgrade to newer version if available
2. If no patch available, consider migrating to alternative FTP server solutions (ProFTPD, vsftpd, FileZilla Server)
3. Implement input validation at OS level to restrict oversized strings in application configuration
Compensating Controls:
1. Deploy application whitelisting to prevent unauthorized modifications to FTP server configuration
2. Implement file integrity monitoring on FTP server configuration files
3. Use network segmentation to isolate FTP server from untrusted networks
4. Enable comprehensive audit logging for all FTP server configuration access attempts
5. Implement process monitoring to detect and alert on FTP server crashes
Detection Rules:
1. Monitor for repeated FTP server process crashes within short timeframes
2. Alert on configuration file access attempts with oversized input strings
3. Track failed SMTP configuration test operations
4. Monitor for unauthorized local access attempts to FTP server administration interfaces
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تقوم بتشغيل BulletProof FTP Server 2019.0.0.50 وتوثيق أهميتها
2. تقييد الوصول المحلي إلى واجهات إعدادات خادم FTP من خلال عناصر التحكم في الوصول على مستوى نظام التشغيل
3. تطبيق مبدأ أقل امتياز لحسابات المستخدمين التي لديها وصول إلى خادم FTP
4. مراقبة عملية خادم FTP للتعطل غير المتوقع وتسجيل جميع تغييرات الإعدادات
إرشادات التصحيح:
1. الاتصال بمورد BulletProof للحصول على التصحيحات المتاحة أو الترقية إلى إصدار أحدث إن أمكن
2. إذا لم يكن هناك تصحيح متاح، فكر في الهجرة إلى حلول خادم FTP بديلة
3. تطبيق التحقق من صحة الإدخال على مستوى نظام التشغيل لتقييد السلاسل النصية الكبيرة الحجم
عناصر التحكم التعويضية:
1. نشر قائمة بيضاء للتطبيقات لمنع التعديلات غير المصرح بها على إعدادات خادم FTP
2. تطبيق مراقبة سلامة الملفات على ملفات إعدادات خادم FTP
3. استخدام تقسيم الشبكة لعزل خادم FTP عن الشبكات غير الموثوقة
4. تفعيل تسجيل التدقيق الشامل لجميع محاولات الوصول إلى إعدادات خادم FTP
5. تطبيق مراقبة العملية للكشف والتنبيه عن تعطل خادم FTP
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
ECC 2024 A.5.1.1 - Access Control Policies
ECC 2024 A.8.1.1 - User Endpoint Devices
ECC 2024 A.8.2.1 - Privileged Access Rights
ECC 2024 A.12.4.1 - Event Logging
ECC 2024 A.12.4.3 - Administrator and Operator Logs
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software Inventory
SAMA CSF PR.AC-1 - Access Control Policy
SAMA CSF PR.AC-4 - Access Rights Management
SAMA CSF DE.AE-1 - Audit Logging
SAMA CSF DE.CM-1 - System Monitoring
🟡 ISO 27001:2022
ISO 27001:2022 A.5.3 - Segregation of Duties
ISO 27001:2022 A.8.1.1 - User Registration and De-registration
ISO 27001:2022 A.8.2.1 - User Access Provisioning
ISO 27001:2022 A.8.2.3 - Management of Privileged Access Rights
ISO 27001:2022 A.12.4.1 - Event Logging
🔗 References & Sources 4
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http://bpftpserver.com/
disclosure@vulncheck.com
http://bpftpserver.com/products/bpftpserver/windows/download
disclosure@vulncheck.com
https://www.exploit-db.com/exploits/46422
disclosure@vulncheck.com
https://www.vulncheck.com/advisories/bulletproof-ftp-server-denial-of-service-via-smtp
disclosure@vulncheck.com