CVE-2007-1812 in BT-Sondage
Summary
by MITRE
PHP remote file inclusion vulnerability in utilitaires/gestion_sondage.php in BT-Sondage 112 allows remote attackers to execute arbitrary PHP code via a URL in the repertoire_visiteur parameter.
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Analysis
by VulDB Data Team • 09/02/2024
The vulnerability described in CVE-2007-1812 represents a critical remote file inclusion flaw within the BT-Sondage 112 web application, specifically affecting the utilitaires/gestion_sondage.php script. This vulnerability falls under the category of insecure direct object references and improper input validation, creating a pathway for malicious actors to execute arbitrary code on the target system. The flaw manifests when the application fails to properly validate or sanitize user-supplied input passed through the repertoire_visiteur parameter, allowing attackers to inject malicious URLs that are then included and executed as PHP code.
The technical implementation of this vulnerability exploits the fundamental weakness in how the application handles dynamic file inclusion operations. When a user provides input through the repertoire_visiteur parameter, the application directly incorporates this value into a file inclusion directive without adequate sanitization or validation. This behavior aligns with CWE-98, which describes improper file inclusion vulnerabilities where attacker-controllable input is used to determine which files to include. The vulnerability operates at the application layer and can be classified under the ATT&CK technique T1505.003 for "Server-side Include" attacks, where adversaries leverage server-side code execution capabilities to gain unauthorized access.
The operational impact of this vulnerability extends beyond simple code execution, potentially enabling full system compromise and persistent access. An attacker who successfully exploits this vulnerability can execute arbitrary PHP code with the privileges of the web server process, which typically has access to database credentials, file system resources, and potentially network access to internal systems. The remote nature of this exploit means that attackers do not require physical access to the system and can leverage this vulnerability from anywhere on the internet. This vulnerability represents a significant risk to organizations as it allows for complete system takeover, data exfiltration, and potential lateral movement within network environments.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term architectural improvements. The primary fix involves implementing strict input validation and sanitization for all user-supplied parameters, particularly those used in file inclusion operations. Organizations should employ whitelisting mechanisms that only allow predefined, safe values for the repertoire_visiteur parameter, or implement proper URL validation that prevents external URL inclusion. Additionally, disabling remote file inclusion features in PHP configuration through the allow_url_include directive provides an additional layer of defense. The implementation of proper input sanitization techniques, including the use of regular expressions to validate parameter formats, should be enforced throughout the application. Security monitoring and logging should be enhanced to detect unusual file inclusion patterns, and regular security assessments should be conducted to identify similar vulnerabilities in other parts of the application. This vulnerability also highlights the importance of following secure coding practices and adhering to the principle of least privilege when configuring web application environments.