CVE-2023-5511
📋 TL;DR
This CSRF vulnerability in Snipe-IT allows attackers to trick authenticated users into performing unintended actions without their consent. It affects all users of Snipe-IT prior to version 6.2.3 who are logged into the application.
💻 Affected Systems
- Snipe-IT
📦 What is this software?
Snipe It by Snipeitapp
⚠️ Risk & Real-World Impact
Worst Case
Attackers could create, modify, or delete assets, users, or system configurations, potentially leading to data loss, unauthorized access, or system compromise.
Likely Case
Attackers could modify asset records, create unauthorized users, or change system settings through crafted requests sent to authenticated users.
If Mitigated
With proper CSRF protections, requests would be rejected unless they include valid anti-CSRF tokens, preventing unauthorized actions.
🎯 Exploit Status
Exploitation requires the victim to be authenticated and visit a malicious page while logged into Snipe-IT. The vulnerability is well-documented in public reports.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v6.2.3
Vendor Advisory: https://github.com/snipe/snipe-it/commit/6d55d782806c9660e9e65dc5250faacb5d0033ed
Restart Required: No
Instructions:
1. Backup your Snipe-IT database and files. 2. Update to v6.2.3 or later via git pull or package update. 3. Run 'php artisan migrate' if database migrations are required. 4. Clear application cache with 'php artisan cache:clear'.
🔧 Temporary Workarounds
Add CSRF Protection Headers
allConfigure web server to add CSRF protection headers like SameSite cookies and Content-Security-Policy
# For Apache: Add 'Header always set X-Frame-Options DENY' to .htaccess
# For Nginx: add 'add_header X-Frame-Options DENY;' to server config
🧯 If You Can't Patch
- Implement strict SameSite cookie policies and Content-Security-Policy headers
- Use browser extensions that block CSRF attempts and educate users about phishing risks
🔍 How to Verify
Check if Vulnerable:
Check Snipe-IT version in admin panel or via 'php artisan --version' command. If version is below 6.2.3, system is vulnerable.Check Version:
php artisan --versionVerify Fix Applied:
After updating, verify version is 6.2.3 or higher and test that CSRF tokens are required for all state-changing requests.📡 Detection & Monitoring
Log Indicators:
- Multiple failed POST requests missing CSRF tokens
- Unusual state-changing actions from unexpected user sessions
Network Indicators:
- Requests to Snipe-IT endpoints without Referer headers or CSRF tokens
- Cross-origin requests to state-changing endpoints
SIEM Query:
source="snipe-it-logs" AND (http_method="POST" AND NOT csrf_token=*) OR (action="create" OR action="delete" OR action="update") AND user_agent="*malicious*"