CVE-2007-2145 in MiniGal
Summary
by MITRE
The imagecomments function in classes.php in MiniGal b13 allows remote attackers to inject arbitrary PHP code into a file in the thumbs/ directory via the input parameter. NOTE: some of these details are obtained from third party information.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 09/06/2024
The vulnerability identified as CVE-2007-2145 represents a critical server-side code injection flaw within the MiniGal b13 web application gallery system. This issue resides in the imagecomments function located within the classes.php file, which processes user input without proper sanitization or validation mechanisms. The vulnerability specifically affects the thumbnail generation functionality where user-supplied data is directly incorporated into file operations within the thumbs/ directory structure.
The technical exploitation of this vulnerability occurs through the input parameter manipulation that allows attackers to inject malicious PHP code into the system. When the imagecomments function processes the input parameter, it fails to properly validate or sanitize the data before incorporating it into file operations. This creates an opportunity for remote attackers to execute arbitrary PHP code within the context of the web server, effectively bypassing normal access controls and security boundaries. The vulnerability stems from inadequate input validation practices and improper handling of user-supplied data within the application's file processing pipeline.
The operational impact of this vulnerability is severe as it provides attackers with the ability to execute arbitrary code on the affected server, potentially leading to complete system compromise. An attacker could leverage this vulnerability to upload malicious files, execute commands, access sensitive data, or establish persistent backdoors within the web application environment. The thumbs/ directory serves as a critical location where thumbnails are generated, making this attack vector particularly dangerous as it can affect the entire gallery system and potentially expose other application components to unauthorized access. The vulnerability enables attackers to gain unauthorized access to the file system and execute malicious code with the privileges of the web server process.
Mitigation strategies for this vulnerability should focus on implementing proper input validation and sanitization mechanisms within the application code. The primary fix involves modifying the imagecomments function in classes.php to sanitize all user-supplied input before processing it within the file operations. This includes implementing strict parameter validation, using whitelisting approaches for acceptable input values, and ensuring that any user data incorporated into file paths or operations undergoes proper encoding or escaping. Organizations should also consider implementing web application firewalls to detect and block suspicious input patterns, conducting regular security code reviews to identify similar vulnerabilities, and applying the latest security patches from the vendor. This vulnerability aligns with CWE-94, which describes the weakness of insufficient validation of code in interpreted languages, and maps to ATT&CK technique T1059.007 for executing malicious code through web shells. The remediation approach should follow secure coding practices outlined in OWASP Top Ten and ISO/IEC 27001 security standards to prevent similar injection vulnerabilities in future development cycles.