CVE-2006-5221 in Cahier De Textes
Summary
by MITRE
Multiple SQL injection vulnerabilities in Cahier de texte 2.0 allow remote attackers to execute arbitrary SQL commands via the (1) matiere_ID parameter in lire.php or the (2) classe_ID parameter in lire_a_faire.php.
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Analysis
by VulDB Data Team • 04/24/2026
The vulnerability identified as CVE-2006-5221 represents a critical SQL injection flaw affecting Cahier de texte version 2.0, a web-based educational management system. This vulnerability exposes the application to remote code execution through improper input validation mechanisms that fail to sanitize user-supplied parameters before incorporating them into database queries. The flaw specifically manifests in two distinct attack vectors within the application's core functionality, making it particularly dangerous as it affects multiple entry points within the system's data handling processes.
The technical implementation of this vulnerability stems from the application's failure to properly escape or validate input parameters in two key files. The first vector occurs in lire.php where the matiere_ID parameter is directly incorporated into SQL queries without adequate sanitization, while the second vector exists in lire_a_faire.php through the classe_ID parameter. These parameters originate from user input and are processed within the application's backend database communication layer. The vulnerability aligns with CWE-89 which classifies SQL injection as a weakness where untrusted data is embedded into SQL commands, and corresponds to ATT&CK technique T1190 which describes the use of SQL injection to manipulate database queries.
The operational impact of this vulnerability extends beyond simple data theft, as it enables attackers to execute arbitrary SQL commands on the underlying database server. This capability allows unauthorized users to perform full database operations including data retrieval, modification, deletion, and potentially administrative actions such as creating new database users or executing system commands. The implications are severe for educational institutions using this software, as it could compromise student records, teacher information, class schedules, and other sensitive academic data. Attackers could also leverage this vulnerability to establish persistent access points within the network infrastructure.
Mitigation strategies for CVE-2006-5221 should focus on immediate input validation and parameterized query implementation. Organizations must implement proper input sanitization routines that filter or escape special characters in all user-supplied parameters before database processing. The recommended approach involves transitioning from dynamic SQL query construction to parameterized queries or prepared statements that separate SQL code from data. Additionally, implementing proper access controls, input length restrictions, and output encoding can significantly reduce the attack surface. Security patches should be applied immediately to update the Cahier de texte application to versions that address these SQL injection vulnerabilities. Network monitoring and intrusion detection systems should be configured to detect suspicious database access patterns that may indicate exploitation attempts. Regular security audits and code reviews should be conducted to identify similar vulnerabilities in other application components, ensuring comprehensive protection against similar attack vectors that align with ATT&CK technique T1071 which covers application layer protocol usage for command and control communications.