CVE-2014-1203
📋 TL;DR
This vulnerability allows remote attackers to execute arbitrary commands on Eyou Mail System servers by injecting shell metacharacters in the domain parameter. Attackers can achieve remote code execution without authentication, affecting all systems running vulnerable versions of Eyou Mail System.
💻 Affected Systems
- Eyou Mail System
📦 What is this software?
Eyou by Eyou
⚠️ Risk & Real-World Impact
Worst Case
Complete system compromise with attacker gaining root/administrator access, data exfiltration, installation of persistent backdoors, and lateral movement to other systems.
Likely Case
Remote code execution leading to web shell installation, mail system compromise, credential theft, and potential data breach.
If Mitigated
Limited impact if proper network segmentation, web application firewalls, and input validation are in place.
🎯 Exploit Status
Exploit is simple and requires minimal technical skill. Public exploit code exists in disclosure references.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version 3.6 or later
Vendor Advisory: http://seclists.org/fulldisclosure/2014/Jan/32
Restart Required: Yes
Instructions:
1. Download Eyou Mail System version 3.6 or later from official vendor. 2. Backup current installation and data. 3. Install the updated version following vendor instructions. 4. Restart the mail service and web server.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to filter shell metacharacters from domain parameter
Modify admin/domain/ip_login_set/d_ip_login_get.php to sanitize input using escapeshellarg() or similar functions
Access Restriction
linuxRestrict access to admin interface using network controls
iptables -A INPUT -p tcp --dport 80 -s trusted_network -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to block requests containing shell metacharacters in parameters
- Isolate the mail system in a segmented network with strict access controls
🔍 How to Verify
Check if Vulnerable:
Check if file admin/domain/ip_login_set/d_ip_login_get.php exists and examine code for lack of input sanitization on domain parameterCheck Version:
Check version in admin interface or examine version files in installation directoryVerify Fix Applied:
Verify version is 3.6 or later and test that shell metacharacters in domain parameter no longer execute commands📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to admin/domain/ip_login_set/d_ip_login_get.php with shell metacharacters
- Unexpected command execution in system logs
Network Indicators:
- HTTP requests containing shell metacharacters like ;, |, &, $, (, ) in parameters
- Outbound connections from mail server to unknown IPs
SIEM Query:
source="web_logs" AND uri="*d_ip_login_get.php*" AND (param="*;*" OR param="*|*" OR param="*&*" OR param="*$(*" OR param="*`*")