CVE-2025-3021

CVE-2025-3021: Path Traversal in e-solutions e-management

Description:

A path traversal vulnerability exists in the e-solutions e-management software. The /downloadReport.php endpoint, specifically the file parameter, is susceptible to malicious input that allows an attacker to access files outside of the intended directory. By crafting a specific file parameter value, an attacker can potentially read sensitive system files, configuration files, or other confidential data.

Severity:

• CVSS Score: 8.7 (High)
• Impact: An attacker can read arbitrary files on the system, potentially leading to information disclosure of sensitive data.

Known Exploit:

Attackers can use the file parameter within the /downloadReport.php endpoint with path traversal sequences like ../ to navigate the file system outside of the expected directory and retrieve unauthorized files. For example, a crafted request might look like:

/downloadReport.php?file=../../../../etc/passwd

This could allow the attacker to read the /etc/passwd file, potentially leading to user enumeration and further exploitation.

Remediation/Mitigation Strategy:

1. Input Validation:

   • Action: Implement strict input validation on the file parameter within the /downloadReport.php endpoint.
   • Details:
     • Whitelist Approach: Only allow a predefined set of valid filenames or paths.
     • Sanitization: Remove or encode any path traversal sequences (e.g., ../, ..\\) from the input.
     • Regular Expression: Use a regular expression to ensure the input conforms to the expected file path format.
     • Canonicalization: Convert the path to its canonical (absolute) form and compare it to allowed paths.

2. Path Restriction:

   • Action: Restrict the access of the downloadReport.php script to only the designated directory containing the reports.
   • Details:
     • Chroot Jail: Configure the web server to run the script in a chroot jail, limiting its access to only the designated directory.
     • Access Control Lists (ACLs): Use ACLs to restrict the script’s access to files outside the intended directory.

3. Least Privilege Principle:

   • Action: Ensure the web server process running the script has the minimum necessary privileges.
   • Details: Avoid running the web server as a privileged user (e.g., root). Grant the web server process only the permissions required to access the report files.

4. Web Application Firewall (WAF):

   • Action: Deploy a WAF to detect and block path traversal attempts.
   • Details: Configure the WAF with rules to identify and block requests containing path traversal sequences in the file parameter.

5. Regular Security Audits:

   • Action: Conduct regular security audits and penetration testing to identify and address vulnerabilities.
   • Details: Include path traversal vulnerabilities in the scope of security assessments.

6. Software Updates:

   • Action: Apply any available patches or updates released by e-solutions for the e-management software.
   • Details: Monitor e-solutions’ website and security advisories for updates addressing this vulnerability.

7. Error Handling:

   • Action: Implement secure error handling to avoid disclosing sensitive information.
   • Details: Avoid displaying full file paths in error messages. Log errors for debugging but sanitize sensitive information.

Assigner

• Spanish National Cybersecurity Institute, S.A. (INCIBE) [email protected]

Date

• Published Date: 2025-03-31 10:12:46
• Updated Date: 2025-03-31 11:15:40

More Details

CVE-2025-3021