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Vulnerabilities

CVE-2019-25591

Medium
DNSS Domain Name Search Software 2.1.8 contains a buffer overflow vulnerability in the registration code input field that allows local attackers to crash the application by submitting an excessively l
CWE-787 — Weakness Type
Published: Mar 22, 2026  ·  Modified: Mar 24, 2026  ·  Source: NVD
CVSS v3
6.2
🔗 NVD Official
📄 Description (English)

DNSS Domain Name Search Software 2.1.8 contains a buffer overflow vulnerability in the registration code input field that allows local attackers to crash the application by submitting an excessively long string. Attackers can trigger a denial of service by pasting a malicious registration code containing 300 repeated characters into the Name/Key field via the Register menu option.

🤖 AI Executive Summary

CVE-2019-25591 is a local buffer overflow vulnerability in DNSS Domain Name Search Software 2.1.8 affecting the registration code input field. An attacker with local access can crash the application by submitting an excessively long string (300+ characters), causing denial of service. With no available patch and no public exploit, the risk is moderate but requires immediate mitigation for affected organizations.

📄 Description (Arabic)

🤖 AI Intelligence Analysis Analyzed: May 22, 2026 20:48
🇸🇦 Saudi Arabia Impact Assessment
This vulnerability primarily affects organizations using DNSS Domain Name Search Software 2.1.8 for domain management and DNS operations. Saudi government agencies (NCA, CITC), telecommunications providers (STC, Mobily), and financial institutions relying on this software for domain registration and management face denial of service risks. The local-only attack vector limits exposure but poses significant risk to internal IT operations and domain administration workflows. Organizations in the energy sector (ARAMCO) and banking institutions using this legacy software are particularly vulnerable.
🏢 Affected Saudi Sectors
Government (NCA, CITC) Telecommunications (STC, Mobily, Zain) Banking and Financial Services Energy (ARAMCO) Healthcare Education
⚖️ Saudi Risk Score (AI)
5.2
/ 10.0
🔧 Remediation Steps (English)
Immediate Actions:
1. Identify all systems running DNSS Domain Name Search Software 2.1.8 and document inventory
2. Restrict local access to affected systems through access control lists and user privilege management
3. Implement input validation and length restrictions at the application level if possible
4. Monitor for suspicious activity targeting the registration code input field

Compensating Controls:
1. Disable the registration feature if not actively used
2. Implement application whitelisting to prevent unauthorized execution
3. Use application sandboxing or containerization to isolate the vulnerable software
4. Enforce principle of least privilege for user accounts accessing the application
5. Implement file integrity monitoring on the application directory

Detection Rules:
1. Monitor for process crashes of DNSS application with error codes related to buffer overflow
2. Alert on registration code input attempts exceeding 300 characters
3. Track failed registration attempts and application restart patterns
4. Log all access to the Register menu option

Upgrade Path:
1. Contact DNSS vendor for version updates or security advisories
2. Evaluate alternative domain name search software with active security support
3. Plan migration timeline if no patch becomes available
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع الأنظمة التي تعمل بـ DNSS Domain Name Search Software الإصدار 2.1.8 وتوثيق الجرد
2. تقييد الوصول المحلي للأنظمة المتأثرة من خلال قوائم التحكم في الوصول وإدارة امتيازات المستخدم
3. تنفيذ التحقق من صحة الإدخال وقيود الطول على مستوى التطبيق إن أمكن
4. مراقبة النشاط المريب الموجه نحو حقل إدخال رمز التسجيل

الضوابط البديلة:
1. تعطيل ميزة التسجيل إذا لم تكن قيد الاستخدام النشط
2. تنفيذ قائمة بيضاء للتطبيقات لمنع التنفيذ غير المصرح به
3. استخدام عزل التطبيقات أو الحاويات لعزل البرنامج الضعيف
4. فرض مبدأ أقل امتياز لحسابات المستخدمين التي تصل إلى التطبيق
5. تنفيذ مراقبة سلامة الملفات في دليل التطبيق

قواعد الكشف:
1. مراقبة أعطال عملية تطبيق DNSS برموز خطأ متعلقة بتجاوز المخزن المؤقت
2. تنبيه محاولات إدخال رمز التسجيل التي تتجاوز 300 حرف
3. تتبع محاولات التسجيل الفاشلة وأنماط إعادة تشغيل التطبيق
4. تسجيل جميع الوصول إلى خيار القائمة Register

مسار الترقية:
1. الاتصال بمورد DNSS للحصول على تحديثات الإصدار أو التنبيهات الأمنية
2. تقييم برنامج بديل للبحث عن أسماء النطاقات مع دعم أمني نشط
3. التخطيط لجدول زمني للهجرة إذا لم يصبح التصحيح متاحاً
📋 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.12.2.1 - Change Management
🔵 SAMA CSF
SAMA CSF ID.AM-2 - Software Inventory SAMA CSF PR.AC-1 - Access Control SAMA CSF PR.PT-1 - Security Testing SAMA CSF DE.CM-1 - System Monitoring
🟡 ISO 27001:2022
ISO 27001:2022 A.5.15 - Access Control ISO 27001:2022 A.8.1 - User Endpoint Devices ISO 27001:2022 A.8.2 - Privileged Access Rights ISO 27001:2022 A.12.2 - Change Management ISO 27001:2022 A.14.2 - Development Security
📊 CVSS Score
6.2
/ 10.0 — Medium
📊 CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack VectorL — Low / Local
Attack ComplexityL — Low / Local
Privileges RequiredN — None / Network
User InteractionN — None / Network
ScopeU — Unchanged
ConfidentialityN — None / Network
IntegrityN — None / Network
AvailabilityH — High
📋 Quick Facts
Severity Medium
CVSS Score6.2
CWECWE-787
Exploit No
Patch ✗ No
Published 2026-03-22
Source Feed nvd
Views 4
🇸🇦 Saudi Risk Score
5.2
/ 10.0 — Saudi Risk
Priority: MEDIUM
🏷️ Tags
CWE-787
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