CVE-2023-40603
📋 TL;DR
CVE-2023-40603 is a missing authorization vulnerability in the Simple Org Chart WordPress plugin that allows unauthorized users to perform actions that should require authentication. This affects all WordPress sites running Simple Org Chart versions up to 2.3.4. Attackers could potentially modify organizational charts or access administrative functions without proper credentials.
💻 Affected Systems
- Simple Org Chart WordPress Plugin
📦 What is this software?
Simple Org Chart by Webtechforce
⚠️ Risk & Real-World Impact
Worst Case
Unauthorized attackers could modify organizational structure data, inject malicious content into charts, or potentially escalate privileges to gain administrative access to the WordPress site.
Likely Case
Unauthenticated users could modify organizational chart content, potentially defacing the site or altering business information displayed to legitimate users.
If Mitigated
With proper network segmentation and web application firewalls, impact would be limited to unauthorized chart modifications within the plugin's scope.
🎯 Exploit Status
Missing authorization vulnerabilities typically require minimal technical skill to exploit once the attack vector is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.3.5 or later
Vendor Advisory: https://patchstack.com/database/vulnerability/simple-org-chart/wordpress-simple-org-chart-plugin-2-3-4-broken-access-control-vulnerability
Restart Required: No
Instructions:
1. Log into WordPress admin panel
2. Navigate to Plugins > Installed Plugins
3. Find Simple Org Chart
4. Click 'Update Now' if update is available
5. If no update appears, manually download version 2.3.5+ from WordPress.org
6. Deactivate, delete old version, upload new version, activate
🔧 Temporary Workarounds
Disable Simple Org Chart Plugin
allTemporarily disable the vulnerable plugin until patched
wp plugin deactivate simple-org-chart
Web Application Firewall Rule
allBlock unauthorized access to Simple Org Chart endpoints
# Add WAF rule to block /wp-content/plugins/simple-org-chart/ for non-admins
🧯 If You Can't Patch
- Implement strict network access controls to limit who can access the WordPress admin interface
- Deploy a web application firewall with rules to detect and block unauthorized access attempts to plugin endpoints
🔍 How to Verify
Check if Vulnerable:
Check WordPress admin panel > Plugins > Simple Org Chart > Version. If version is 2.3.4 or earlier, you are vulnerable.Check Version:
wp plugin get simple-org-chart --field=versionVerify Fix Applied:
After updating, verify version shows 2.3.5 or later in WordPress plugins list.📡 Detection & Monitoring
Log Indicators:
- Unauthorized POST requests to /wp-content/plugins/simple-org-chart/ endpoints
- 403 errors followed by successful 200 responses to same endpoints
- User role changes from non-admin to admin
Network Indicators:
- Unusual traffic patterns to plugin-specific endpoints from unauthorized IPs
- Multiple failed authentication attempts followed by successful requests without credentials
SIEM Query:
source="wordpress.log" AND (uri_path="/wp-content/plugins/simple-org-chart/" AND (response_code=200 AND user_role!="administrator"))