CVE-2025-57642: Tourism Management System RCE Vulnerability

CVE-2025-57642 Overview

CVE-2025-57642 is an unrestricted file upload vulnerability in Sohamjuhin Tourism Management System 2.0. An authenticated attacker can upload arbitrary PHP files through the application's upload functionality. Once uploaded, the attacker executes the shell script directly through a web request, achieving remote code execution on the underlying server. The flaw maps to CWE-434: Unrestricted Upload of File with Dangerous Type. Successful exploitation grants the attacker the privileges of the web server process and can lead to full system compromise, theft of stored tourist and booking data, and lateral movement into the hosting environment.

Critical Impact
Attackers with valid credentials can upload PHP webshells and execute arbitrary operating system commands on servers running Tourism Management System 2.0.

Affected Products

Sohamjuhin Tourism Management System 2.0
Deployments using the vulnerable file upload endpoint identified in the GitHub issue tracker
PHP-based installations exposing the administrative upload functionality to network users

Discovery Timeline

2025-09-10 - CVE-2025-57642 published to NVD
2025-10-17 - Last updated in NVD database

Technical Details for CVE-2025-57642

Vulnerability Analysis

The Tourism Management System exposes a file upload feature that fails to validate the type, extension, and content of uploaded files. An attacker authenticated to the application submits a PHP file disguised as a legitimate resource such as an image or document. The application stores the file in a web-accessible directory without sanitizing its name or stripping executable extensions. When the attacker requests the uploaded file by URL, the PHP interpreter executes its contents, yielding command execution under the web server account. The Exploit Prediction Scoring System (EPSS) places this issue in the upper tier of likely-to-be-exploited vulnerabilities, reflecting the trivial nature of webshell deployment once authenticated access is obtained. Public proof-of-concept material is hosted in the debug-security CVE repository.

Root Cause

The upload handler does not enforce a server-side allowlist of MIME types or file extensions. It also does not rename uploaded files, validate magic bytes, or store them outside the web root. These omissions allow .php, .phtml, and similar handler-mapped extensions to reach a directory where the PHP engine processes them on request.

Attack Vector

The attack vector is network-based and requires authenticated access to the application. After logging in, the attacker submits a multipart form request containing a PHP payload to the vulnerable upload endpoint. The server writes the file to a predictable path. The attacker then issues an HTTP GET or POST request to that path, passing commands through request parameters that the webshell forwards to system(), exec(), or passthru(). From this position, the attacker can read the application database credentials, pivot into adjacent services, and persist on the host.

No verified exploit code is reproduced here. Refer to the public proof-of-concept repository for technical details.

Detection Methods for CVE-2025-57642

Indicators of Compromise

New .php, .phtml, or .php5 files appearing in upload directories such as uploads/, images/, or assets/ that are owned by the web server user.
Outbound network connections originating from the PHP process to attacker-controlled hosts shortly after a successful upload request.
Web server access logs showing POST requests to upload endpoints followed by GET requests to newly created files with suspicious query strings like ?cmd=, ?c=, or ?0=.

Detection Strategies

Monitor file create events under the application's document root for executable script extensions and alert when the parent process is php-fpm, httpd, or nginx.
Inspect uploaded file content for PHP tags (<?php, <?=) regardless of the declared extension or MIME type.
Correlate authentication events with upload activity to identify accounts performing anomalous administrative actions.

Monitoring Recommendations

Forward web server access logs, PHP error logs, and host process telemetry to a centralized analytics platform for correlation across upload, write, and execution events.
Track child processes spawned by the PHP interpreter, especially shells such as /bin/sh, bash, cmd.exe, and powershell.exe.
Baseline normal upload volumes per user account and flag deviations that may indicate credential abuse.

How to Mitigate CVE-2025-57642

Immediate Actions Required

Restrict network access to the Tourism Management System administrative interface using firewall rules or a reverse proxy allowlist until a patched build is available.
Rotate credentials for all application accounts and review user roles to remove unnecessary upload privileges.
Audit upload directories for unauthorized PHP files and quarantine any artifacts that do not match expected content types.

Patch Information

No vendor advisory or fixed version has been published at the time of writing. Monitor the project issue tracker for upstream fixes. Until a patch is released, treat installations as exposed and apply compensating controls.

Workarounds

Configure the web server to deny script execution within upload directories by removing PHP handler mappings for those paths.
Implement a server-side allowlist that validates file extensions, MIME types, and magic bytes before accepting an upload.
Store uploaded files outside the web root and serve them through a controlled handler that sets Content-Type explicitly and never invokes the PHP interpreter.

bash

# Apache configuration to disable PHP execution in upload directory
<Directory "/var/www/tourism/uploads">
    php_flag engine off
    AddType text/plain .php .phtml .php5 .phar
    <FilesMatch "\.(php|phtml|php5|phar)$">
        Require all denied
    </FilesMatch>
</Directory>