📄 Description (English)
phpBB contains an arbitrary file upload vulnerability that allows authenticated attackers to upload malicious files by exploiting the plupload functionality and phar:// stream wrapper. Attackers can upload a crafted zip file containing serialized PHP objects that execute arbitrary code when deserialized through the imagick parameter in attachment settings.
🤖 AI Executive Summary
CVE-2019-25685 is a critical arbitrary file upload vulnerability in phpBB affecting all versions, allowing authenticated attackers to execute arbitrary code through malicious zip files exploiting the phar:// stream wrapper and imagick deserialization. With CVSS 8.8 and publicly available exploits, this poses immediate risk to organizations running phpBB forums, particularly those in Saudi Arabia's government, education, and corporate sectors. The vulnerability requires authentication but enables complete system compromise once exploited.
📄 Description (Arabic)
🤖 AI Intelligence Analysis Analyzed: Apr 22, 2026 01:55
🇸🇦 Saudi Arabia Impact Assessment
Saudi government entities, educational institutions (universities and schools), and corporate communication platforms using phpBB forums are at highest risk. ARAMCO and energy sector organizations, banking institutions, and telecommunications companies (STC, Mobily) that may host internal forums are vulnerable. Healthcare organizations using phpBB for staff collaboration face data breach risks. The vulnerability enables attackers to gain shell access, exfiltrate sensitive data, establish persistence, and potentially pivot to critical infrastructure. Government agencies under NCA oversight and SAMA-regulated financial institutions face compliance violations and operational disruption.
🏢 Affected Saudi Sectors
Government and Public Administration
Education (Universities and Schools)
Banking and Financial Services
Energy and Utilities (ARAMCO)
Telecommunications (STC, Mobily)
Healthcare
Corporate Communications
Media and Publishing
🎯 MITRE ATT&CK Techniques
⚖️ Saudi Risk Score (AI)
8.5
/ 10.0
🔧 Remediation Steps (English)
IMMEDIATE ACTIONS:
1. Identify all phpBB installations across your organization using network scanning and asset inventory tools
2. Restrict access to phpBB administration panels and file upload functionality to trusted networks only
3. Disable the plupload functionality if not essential; disable imagick parameter processing in attachment settings
4. Review recent file uploads and user activity logs for suspicious zip files or serialized PHP objects
5. Monitor for web shells and unauthorized PHP files in upload directories
PATCHING GUIDANCE:
1. Since no official patch is available, upgrade to the latest phpBB version (3.3.x or 4.x) which may contain mitigations
2. Apply vendor security advisories and community patches if available
3. Implement Web Application Firewall (WAF) rules to block phar:// protocol usage and suspicious serialized object patterns
COMPENSATING CONTROLS:
1. Implement strict file upload validation: whitelist only safe file types (jpg, png, pdf), reject zip files
2. Store uploads outside web root or in non-executable directories with .htaccess restrictions
3. Disable PHP execution in upload directories via web server configuration
4. Implement input validation to prevent serialized object injection
5. Enable comprehensive logging and alerting on file uploads and PHP execution
6. Conduct regular security audits of phpBB configurations
DETECTION RULES:
1. Alert on zip file uploads to phpBB attachment directories
2. Monitor for phar:// protocol usage in HTTP requests
3. Detect serialized PHP objects (strings starting with 'O:' or 'a:') in POST parameters
4. Flag imagick parameter modifications in attachment settings
5. Monitor for unexpected PHP file creation in upload directories
🔧 خطوات المعالجة (العربية)
الإجراءات الفورية:
1. تحديد جميع تثبيتات phpBB عبر المنظمة باستخدام أدوات المسح والجرد
2. تقييد الوصول إلى لوحات إدارة phpBB ووظائف تحميل الملفات للشبكات الموثوقة فقط
3. تعطيل وظيفة plupload إذا لم تكن ضرورية؛ تعطيل معالجة معامل imagick في إعدادات المرفقات
4. مراجعة عمليات التحميل الأخيرة وسجلات نشاط المستخدم للملفات المريبة
5. مراقبة الأصداف والملفات غير المصرح بها
إرشادات التصحيح:
1. ترقية إلى أحدث إصدار phpBB (3.3.x أو 4.x) الذي قد يحتوي على تخفيفات
2. تطبيق تنبيهات الأمان من البائع والتصحيحات المجتمعية
3. تنفيذ قواعد جدار حماية تطبيقات الويب لحظر بروتوكول phar:// والأنماط المريبة
الضوابط البديلة:
1. تنفيذ التحقق الصارم من تحميل الملفات: قائمة بيضاء للأنواع الآمنة فقط، رفض ملفات zip
2. تخزين التحميلات خارج جذر الويب في مجلدات غير قابلة للتنفيذ
3. تعطيل تنفيذ PHP في مجلدات التحميل عبر إعدادات خادم الويب
4. تنفيذ التحقق من الإدخال لمنع حقن الكائنات المسلسلة
5. تفعيل السجلات الشاملة والتنبيهات على التحميلات
6. إجراء تدقيقات أمان منتظمة لإعدادات phpBB
قواعد الكشف:
1. تنبيه عند تحميل ملفات zip إلى مجلدات المرفقات
2. مراقبة استخدام بروتوكول phar:// في طلبات HTTP
3. كشف كائنات PHP المسلسلة في معاملات POST
4. وضع علامة على تعديلات معامل imagick
5. مراقبة إنشاء ملفات PHP غير المتوقعة
📋 Regulatory Compliance Mapping
🟢 NCA ECC 2024
A.12.3.1 - Change management procedures for system modifications
A.14.2.1 - Secure development policy and procedures
A.14.2.5 - Secure development environment
A.12.6.1 - Management of technical vulnerabilities
🔵 SAMA CSF
ID.BE-5 - Organizational resilience with respect to cybersecurity risk
PR.DS-6 - Integrity checking mechanisms
PR.IP-1 - System development and acquisition processes
DE.CM-8 - Vulnerability scans are performed
🟡 ISO 27001:2022
A.12.2.1 - Restrictions on software installation
A.12.6.1 - Management of technical vulnerabilities
A.14.2.1 - Secure development policy
A.14.2.5 - Secure development environment
🟣 PCI DSS v4.0.1
6.2 - Ensure security patches are installed
6.5.1 - Injection flaws prevention
6.5.8 - Improper access control prevention
11.2 - Vulnerability scanning
📦 Affected Products / CPE 1 entries
phpbb:phpbb