CVE-2023-36139
📋 TL;DR
This vulnerability in PHPJabbers Cleaning Business Software 1.0 allows remote attackers to take over user accounts by changing email addresses and passwords without proper verification. Attackers can hijack any account by exploiting the lack of authentication checks on the profile page. All users of the affected software version are at risk.
💻 Affected Systems
- PHPJabbers Cleaning Business Software
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of all user accounts, including administrative accounts, leading to full system takeover, data theft, and potential ransomware deployment.
Likely Case
Attackers hijack user accounts to steal sensitive business data, impersonate legitimate users, and potentially escalate privileges within the system.
If Mitigated
With proper authentication controls, account changes require verification, preventing unauthorized modifications and limiting impact to failed attempts.
🎯 Exploit Status
Exploitation requires access to a user session but is straightforward once obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: https://www.phpjabbers.com/cleaning-business-software/
Restart Required: No
Instructions:
No official patch available. Contact vendor for updates or implement workarounds.
🔧 Temporary Workarounds
Implement Session Validation
allAdd server-side validation to require current password confirmation before allowing email or password changes.
Modify profile update logic in PHP code to verify current password matches stored hash before processing changes.
Add CSRF Protection
allImplement CSRF tokens on profile update forms to prevent unauthorized requests.
Generate unique tokens for each session and validate them on form submission.
🧯 If You Can't Patch
- Disable user profile modification functionality entirely if not critical.
- Implement network segmentation to restrict access to the application from untrusted networks.
🔍 How to Verify
Check if Vulnerable:
Test if changing email or password on profile page works without verifying current password.Check Version:
Check software version in admin panel or configuration files.Verify Fix Applied:
Verify that profile changes now require current password confirmation and CSRF token validation.📡 Detection & Monitoring
Log Indicators:
- Multiple failed password change attempts from same IP
- Unusual email change requests outside business hours
Network Indicators:
- HTTP POST requests to profile update endpoints without proper authentication parameters
SIEM Query:
source="web_logs" AND (uri="/profile/update" OR uri="/change_email") AND status=200 AND NOT (param="current_password" EXISTS)