CVE-2025-1107
📋 TL;DR
CVE-2025-1107 is an unverified password change vulnerability in Janto software that allows unauthenticated attackers to change any user's password without knowing the current password. This affects Janto versions prior to r12. Attackers can exploit this by sending a crafted POST request to the '/public/cgi/Gateway.php' endpoint.
💻 Affected Systems
- Janto
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Complete account takeover of all users, including administrators, leading to full system compromise, data theft, and potential ransomware deployment.
Likely Case
Attackers gain unauthorized access to user accounts, potentially escalating privileges to administrative functions and accessing sensitive data.
If Mitigated
With proper network segmentation and monitoring, impact is limited to isolated systems with quick detection of unauthorized password changes.
🎯 Exploit Status
Exploitation requires only a single crafted HTTP POST request to a known endpoint with predictable parameters.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: r12
Vendor Advisory: https://www.incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-janto
Restart Required: Yes
Instructions:
1. Download Janto version r12 or later from official vendor sources. 2. Backup current configuration and data. 3. Install the updated version following vendor documentation. 4. Restart the Janto service or server. 5. Verify the update was successful.
🔧 Temporary Workarounds
Block vulnerable endpoint
allTemporarily block access to the vulnerable Gateway.php endpoint using web server or firewall rules
# Apache: RewriteRule ^/public/cgi/Gateway\.php$ - [F]
# Nginx: location ~ /public/cgi/Gateway\.php$ { return 403; }
# Firewall: iptables -A INPUT -p tcp --dport 80 -m string --string '/public/cgi/Gateway.php' --algo bm -j DROP
Implement WAF rules
allAdd web application firewall rules to detect and block exploitation attempts
# ModSecurity: SecRule REQUEST_URI "@contains /public/cgi/Gateway.php" "id:1001,phase:1,deny,status:403,msg:'CVE-2025-1107 Block'"
# Cloudflare WAF: Create rule blocking requests to */public/cgi/Gateway.php*
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Janto systems from critical infrastructure
- Enable detailed logging and monitoring for all requests to /public/cgi/Gateway.php with alerts for suspicious activity
🔍 How to Verify
Check if Vulnerable:
Check Janto version via admin interface or configuration files. If version is earlier than r12, system is vulnerable.Check Version:
# Check Janto version in web interface or configuration files
# Typically found in admin panel or /var/www/janto/config filesVerify Fix Applied:
After updating to r12, attempt to reproduce the vulnerability by sending a POST request to /public/cgi/Gateway.php with password change parameters - should be rejected.📡 Detection & Monitoring
Log Indicators:
- POST requests to /public/cgi/Gateway.php with password change parameters
- Multiple failed login attempts followed by successful login from same IP
- Unusual password reset activity in user logs
Network Indicators:
- HTTP POST requests to /public/cgi/Gateway.php with suspicious parameters
- Traffic patterns showing password change requests from unexpected sources
SIEM Query:
source="web_logs" AND uri="/public/cgi/Gateway.php" AND method="POST" AND (params CONTAINS "password" OR params CONTAINS "passwd" OR params CONTAINS "pwd")