CVE-2016-10098
📋 TL;DR
CVE-2016-10098 is a critical command injection vulnerability affecting SendQuick Entera and Avera SMS gateway appliances. Attackers can execute arbitrary system commands with root privileges, potentially taking complete control of affected devices. Organizations using these appliances for SMS messaging are at risk.
💻 Affected Systems
- SendQuick Entera
- SendQuick Avera
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete device compromise leading to data exfiltration, lateral movement into internal networks, and persistent backdoor installation.
Likely Case
Unauthorized SMS message sending, device configuration modification, and credential harvesting from the appliance.
If Mitigated
Limited impact if devices are isolated in secure network segments with strict access controls and monitoring.
🎯 Exploit Status
Multiple command injection points exist in the web interface. Exploitation requires network access to the management interface.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2HF16 or later
Vendor Advisory: https://niantech.io/blog/2017/02/05/vulns-multiple-vulns-in-sendquick-entera-avera-sms-gateway-appliances/
Restart Required: Yes
Instructions:
1. Download firmware version 2HF16 or later from SendQuick vendor portal. 2. Backup current configuration. 3. Upload new firmware via web interface. 4. Reboot appliance. 5. Restore configuration if needed.
🔧 Temporary Workarounds
Network Segmentation
allIsolate SMS gateway appliances in dedicated VLAN with strict firewall rules.
Access Control
linuxRestrict management interface access to specific administrative IP addresses only.
iptables -A INPUT -p tcp --dport 80 -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -s [TRUSTED_IP] -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP
iptables -A INPUT -p tcp --dport 443 -j DROP
🧯 If You Can't Patch
- Deploy network-based IPS/IDS rules to detect and block command injection attempts
- Implement strict outbound firewall rules to prevent data exfiltration from compromised devices
🔍 How to Verify
Check if Vulnerable:
Check firmware version via web interface: Login > System > About. Version should be 2HF16 or higher.Check Version:
curl -k https://[DEVICE_IP]/system/about | grep -i versionVerify Fix Applied:
After patching, verify version shows 2HF16 or later. Test management interface functionality remains intact.📡 Detection & Monitoring
Log Indicators:
- Unusual command execution in system logs
- Multiple failed login attempts followed by successful access
- Suspicious process creation from web service user
Network Indicators:
- HTTP requests containing shell metacharacters (;, |, &, $, etc.) to management interface
- Unexpected outbound connections from SMS gateway
SIEM Query:
source="sendquick_appliance" AND (http_uri="*;*" OR http_uri="*|*" OR http_uri="*&*" OR http_uri="*$*" OR http_uri="*`*")