Listen to this Post
How the CVE Works:
The vulnerability in django-helpdesk before version 1.0.0 arises from improper use of `os.umask(0)` in models.py. This function call sets the file creation mask to 0, disabling default permission restrictions. As a result, files created by the application may inherit overly permissive access controls, potentially exposing sensitive data to unauthorized users. Attackers could exploit this misconfiguration to read or modify ticket attachments, user details, or system logs stored with insecure permissions. The issue persists until the umask is properly reset or the application is updated.
DailyCVE Form:
Platform: Django-Helpdesk
Version: <1.0.0
Vulnerability: Data Exposure
Severity: Moderate
Date: Jun 4, 2025
Prediction: Patch by Jul 15, 2025
What Undercode Say:
Analytics:
- Exploit Likelihood: Medium (requires filesystem access)
- Attack Vector: Local/Remote (depends on deployment)
- Mitigation Complexity: Low (umask fix)
Exploit Command:
find /var/lib/django-helpdesk/ -type f -perm -o+r -ls
Lists world-readable files due to umask misconfiguration.
Protection Code:
Fix: Replace os.umask(0) with secure default (e.g., 0o077) import os os.umask(0o077) Restrict to owner-only access
Verification Script:
import os assert os.umask(0) != 0, "Vulnerable: umask is 0"
Log Monitoring:
grep "umask(0)" /path/to/django-helpdesk/models.py
Patch Test:
python -c "from django_helpdesk import models; assert models.os.umask(0o077) is None"
Workaround:
Manually set restrictive permissions post-install:
chmod -R o-rwx /path/to/helpdesk_media/
Detection Rule (IDS):
alert tcp any any -> any any (msg:"CVE-2025-XXXX Exploit Attempt"; content:"umask(0)"; sid:1000001;)
Docker Mitigation:
RUN chmod -R 700 /app/helpdesk_data
API Check:
import subprocess subprocess.check_call(["grep", "-q", "umask(0)", "/path/to/models.py"])
Post-Patch Audit:
stat -c "%a %n" /var/lib/django-helpdesk/ | grep -v "^700"
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
