CVE-2007-5781 in sige
Summary
by MITRE
PHP remote file inclusion vulnerability in inc/sige_init.php in Sige 0.1 allows remote attackers to execute arbitrary PHP code via a URL in the SYS_PATH parameter.
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Analysis
by VulDB Data Team • 10/09/2024
The vulnerability described in CVE-2007-5781 represents a critical remote file inclusion flaw in the Sige 0.1 content management system that exposes the application to arbitrary code execution attacks. This vulnerability specifically affects the inc/sige_init.php file where the SYS_PATH parameter is improperly validated and directly incorporated into file inclusion operations without adequate sanitization or input validation measures. The flaw exists within the application's initialization process where user-supplied input is blindly trusted and processed, creating an avenue for malicious actors to inject and execute arbitrary PHP code on the target server. This type of vulnerability falls under the category of insecure direct object references and improper input validation, which are commonly exploited in web application attacks.
The technical implementation of this vulnerability stems from the application's failure to properly validate or sanitize the SYS_PATH parameter before using it in a file inclusion context. When an attacker supplies a malicious URL as the value for SYS_PATH, the application processes this input directly within the include or require statement, allowing the remote file to be executed on the server. This creates a dangerous attack surface where remote code execution becomes possible without authentication or authorization from legitimate users. The vulnerability is classified as a remote file inclusion (RFI) issue that enables attackers to load and execute malicious code from external servers, potentially leading to complete system compromise. The flaw operates at the application layer and demonstrates poor security practices in input handling and resource management.
The operational impact of this vulnerability is severe and multifaceted, as it allows remote attackers to execute arbitrary code on the affected system with the privileges of the web server process. Successful exploitation can result in complete system compromise, data theft, unauthorized access to sensitive information, and potential lateral movement within the network infrastructure. Attackers can leverage this vulnerability to install backdoors, modify application behavior, access database contents, or use the compromised server as a launching point for further attacks against other systems. The vulnerability affects the confidentiality, integrity, and availability of the affected system, making it particularly dangerous for production environments. This flaw also aligns with attack patterns documented in the attack technique matrix under techniques related to remote code execution and web application exploitation.
Mitigation strategies for this vulnerability must address both immediate remediation and long-term security improvements. The primary fix involves implementing proper input validation and sanitization for all user-supplied parameters, particularly those used in file inclusion operations. Applications should employ allowlists of permitted values rather than denylists, and all external inputs should be rigorously validated before processing. Additionally, the use of secure coding practices such as disabling remote file inclusion features, implementing proper path validation, and utilizing absolute paths instead of relative or user-supplied paths can prevent similar vulnerabilities. Organizations should also implement web application firewalls, regular security code reviews, and vulnerability scanning to detect and remediate such issues proactively. The vulnerability aligns with CWE-98 and CWE-22 categories, representing improper input validation and path traversal issues that require comprehensive security measures to prevent exploitation.