CVE-2016-10043
📋 TL;DR
CVE-2016-10043 is a critical OS command injection vulnerability in Radisys MRF Web Panel (SWMS) that allows attackers to execute arbitrary commands on the underlying system. The vulnerability affects version 9.0.1 and enables complete system compromise through the web interface. Organizations running this specific version of Radisys MRF Web Panel are at risk.
💻 Affected Systems
- Radisys MRF Web Panel (SWMS)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete system takeover, data exfiltration, installation of persistent backdoors, and use of the system as a pivot point for lateral movement within the network.
Likely Case
Unauthorized command execution leading to service disruption, data theft, and potential privilege escalation to root/system-level access.
If Mitigated
Limited impact if proper network segmentation, web application firewalls, and least-privilege principles are implemented.
🎯 Exploit Status
Exploitation requires authentication to the web panel, but once authenticated, the exploit is trivial using publicly available proof-of-concept code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Versions after 9.0.1
Vendor Advisory: https://www.radisys.com/support/security-advisories
Restart Required: Yes
Instructions:
1. Contact Radisys support for the latest patched version. 2. Backup current configuration. 3. Apply the update following vendor instructions. 4. Restart the MRF Web Panel service. 5. Verify the patch is applied successfully.
🔧 Temporary Workarounds
Input Validation and Sanitization
linuxImplement strict input validation on the MSM_MACRO_NAME parameter to reject pipe characters and other shell metacharacters.
Modify /swms/ms.cgi to sanitize MSM_MACRO_NAME parameter before processing
Web Application Firewall Rules
allDeploy WAF rules to block requests containing pipe characters in POST parameters to /swms/ms.cgi.
Add WAF rule: Block if ARGS:MSM_MACRO_NAME contains '|'
🧯 If You Can't Patch
- Isolate the MRF Web Panel system in a dedicated network segment with strict firewall rules limiting access to authorized IPs only.
- Implement network-based intrusion detection/prevention systems to monitor for command injection patterns in web traffic.
🔍 How to Verify
Check if Vulnerable:
Test by sending a POST request to /swms/ms.cgi with MSM_MACRO_NAME parameter containing a pipe character followed by a harmless command like '|id' (requires authentication).Check Version:
Check the web panel interface or configuration files for version information, or contact Radisys support for version verification tools.Verify Fix Applied:
Attempt the same test after patching; the system should reject the request or properly sanitize the input without executing the command.📡 Detection & Monitoring
Log Indicators:
- Unusual POST requests to /swms/ms.cgi containing pipe characters in parameters
- Apache logs showing command execution patterns in URLs
- System logs showing commands executed by apache user that don't match normal application behavior
Network Indicators:
- HTTP POST requests to /swms/ms.cgi with shell metacharacters in parameters
- Unusual outbound connections from the MRF server following web requests
SIEM Query:
source="web_logs" AND uri="/swms/ms.cgi" AND (post_param="*|*" OR post_param="*;*" OR post_param="*&*" OR post_param="*`*")