CVE-2025-39429 in Széchenyi 2020 Logo Plugin
Summary
by MITRE • 04/17/2025
Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion') vulnerability in Földesi, Mihály Széchenyi 2020 Logo allows PHP Local File Inclusion. This issue affects Széchenyi 2020 Logo: from n/a through 1.1.
Be aware that VulDB is the high quality source for vulnerability data.
Analysis
by VulDB Data Team • 04/17/2025
The vulnerability identified as CVE-2025-39429 represents a critical improper control of filename for include/require statements in PHP applications, commonly known as PHP Remote File Inclusion or PHP Local File Inclusion. This security flaw exists within the Földesi, Mihály Széchenyi 2020 Logo software product, specifically affecting versions ranging from the initial release through version 1.1. The vulnerability stems from inadequate input validation and sanitization of file path parameters that are used in PHP include or require statements, creating a pathway for malicious actors to manipulate the application's execution flow. The issue manifests when user-supplied input is directly incorporated into file inclusion directives without proper verification or filtering, allowing attackers to specify arbitrary files for inclusion, potentially leading to unauthorized code execution or information disclosure.
The technical implementation of this vulnerability occurs when the application accepts file names or paths through user-controllable parameters such as GET or POST variables, which are then directly passed to PHP's include or require functions. This pattern violates fundamental security principles of input validation and demonstrates a clear weakness in the application's defensive mechanisms. Attackers can exploit this by crafting malicious input that references local files on the server or remote files hosted on attacker-controlled servers, potentially leading to code execution, data theft, or complete system compromise. The vulnerability operates at the application layer and can be classified under CWE-98 as "Improper Control of Filename for Include/Require Statement" or CWE-88 as "Improper Neutralization of Argument Delimiters in a Command" when combined with command execution scenarios. From an operational perspective, this vulnerability allows adversaries to escalate privileges and gain unauthorized access to sensitive server resources, making it particularly dangerous in environments where the web application has elevated file system permissions.
The impact of this vulnerability extends beyond simple code execution, as it can facilitate broader compromise of the affected system and its surrounding infrastructure. When exploited, the vulnerability enables attackers to access sensitive files, execute arbitrary PHP code, and potentially establish persistent access to the target system. This type of vulnerability commonly maps to ATT&CK technique T1505.003 "Server Software Component" and T1059.007 "Command and Scripting Interpreter: PHP" within the MITRE ATT&CK framework. The exploitation typically requires minimal privileges and can be automated, making it attractive to both automated attacks and targeted threat actors. Organizations using affected versions of the Széchenyi 2020 Logo software face significant risk of unauthorized access, data breaches, and potential system compromise. The vulnerability's persistence across multiple versions indicates a fundamental flaw in the application's security design that requires immediate remediation. The attack surface is particularly concerning as it involves the core functionality of file inclusion, which is a common pattern in web applications and often represents a critical security control failure.
Mitigation strategies for CVE-2025-39429 should focus on implementing robust input validation and sanitization mechanisms to prevent user-supplied data from being used directly in file inclusion operations. The recommended approach involves using allowlists of permitted files or paths, implementing strict input validation that rejects potentially dangerous characters or sequences, and avoiding dynamic file inclusion based on user input. Developers should employ secure coding practices such as whitelisting file names, using absolute paths for file inclusion, and implementing proper error handling that does not expose sensitive system information. Additionally, the application should be configured to disable remote file inclusion features in PHP, restrict file permissions appropriately, and implement proper access controls to limit the impact of any successful exploitation attempts. Security patches should be applied immediately to upgrade to versions that address this vulnerability, while network segmentation and monitoring can provide additional layers of defense. Organizations should also conduct comprehensive security assessments to identify similar vulnerabilities in other applications and implement automated security scanning to prevent future occurrences of this class of flaw. The remediation process should include thorough testing to ensure that the security fixes do not introduce regressions in application functionality while maintaining the integrity of the software's intended operation.