CVE-2025-3021: e-management Path Traversal Vulnerability

CVE-2025-3021 Overview

CVE-2025-3021 is a path traversal vulnerability [CWE-22] affecting the e-management application from e-solutions. The flaw resides in the /downloadReport.php endpoint, where the file parameter is not properly sanitized. An unauthenticated remote attacker can supply directory traversal sequences to read arbitrary files outside the intended report directory. Successful exploitation discloses confidential files accessible to the web server process. The Spanish National Cybersecurity Institute (INCIBE) published an advisory documenting this and other vulnerabilities in the product.

Critical Impact
Unauthenticated attackers can read arbitrary files from the server filesystem over the network, exposing credentials, source code, and configuration data.

Affected Products

e-solutions e-management (vendor advisory does not enumerate specific fixed versions)
Deployments exposing the /downloadReport.php endpoint
Web-facing installations reachable from untrusted networks

Discovery Timeline

2025-03-31 - CVE-2025-3021 published to NVD
2026-04-15 - Last updated in NVD database

Technical Details for CVE-2025-3021

Vulnerability Analysis

The vulnerability is a classic path traversal flaw [CWE-22] in the report download functionality of e-management. The /downloadReport.php endpoint accepts a user-controlled file parameter that designates which report to return to the client. The application fails to validate or canonicalize this parameter before resolving it against the filesystem. As a result, an attacker can submit traversal sequences such as ../ to escape the intended report directory and reference any file readable by the PHP process.

The attack requires no authentication, no user interaction, and can be carried out over the network with low complexity. Confidentiality impact is high, while integrity and availability are not directly affected. The EPSS probability is 0.804% with a percentile of 74.321, indicating measurable interest relative to other published CVEs.

Root Cause

The root cause is missing input validation on the file parameter. The application concatenates the supplied value into a filesystem path without applying allowlists, canonical path comparison, or removal of traversal sequences. PHP file functions then resolve the relative path, reaching files outside the report directory.

Attack Vector

An attacker issues an HTTP request to /downloadReport.php with a crafted file parameter containing traversal sequences. The server responds with the contents of the targeted file. Typical targets include /etc/passwd on Linux, PHP configuration files, database connection strings, and application source code. Refer to the INCIBE Security Notice for technical details published by the coordinating CSIRT.

Detection Methods for CVE-2025-3021

Indicators of Compromise

HTTP requests to /downloadReport.php containing ../, ..%2f, ..%5c, or URL-encoded traversal sequences in the file parameter
Responses from downloadReport.php returning non-report file types or unusually large payloads
Web server access logs showing repeated file= parameter variations from a single source IP

Detection Strategies

Inspect web server and application logs for query strings on /downloadReport.php that include traversal patterns or absolute path references
Deploy WAF signatures targeting path traversal payloads against the vulnerable endpoint
Correlate outbound responses from the application server with sensitive file paths such as /etc/passwd, wp-config.php, or .env

Monitoring Recommendations

Forward HTTP access logs and PHP error logs to a centralized analytics platform for retention and query
Alert on high-frequency requests to downloadReport.php from non-corporate IP ranges
Baseline normal file parameter values and flag deviations containing directory separators or encoded characters

How to Mitigate CVE-2025-3021

Immediate Actions Required

Restrict network exposure of the e-management application to trusted networks or VPN access until a patch is applied
Place the application behind a web application firewall configured to block path traversal payloads on /downloadReport.php
Audit the filesystem for files readable by the web server process and remove unnecessary sensitive material from those paths

Patch Information

No vendor patch URLs are referenced in the available CVE data. Administrators should consult the INCIBE Security Notice and contact e-solutions directly for an updated release that addresses CVE-2025-3021.

Workarounds

Implement a reverse proxy rule that rejects any request to downloadReport.php whose file parameter contains .., /, \, or URL-encoded equivalents
Run the PHP process under a least-privilege account that cannot read system or configuration files outside the application directory
Apply chroot or container isolation to constrain the filesystem visible to the web application

bash

# Example NGINX rule to block traversal payloads against the vulnerable endpoint
location = /downloadReport.php {
    if ($arg_file ~* "(\.\./|\.\.\\|%2e%2e|%2f|%5c)") {
        return 403;
    }
    proxy_pass http://app_backend;
}