CVE-2025-24962
📋 TL;DR
CVE-2025-24962 is a command injection vulnerability in reNgine's nmap_cmd parameter that allows authenticated users to execute arbitrary commands on the underlying operating system. This affects all reNgine deployments running vulnerable versions where users have access to the affected functionality. The vulnerability stems from improper input validation of user-supplied nmap command parameters.
💻 Affected Systems
- reNgine
📦 What is this software?
Rengine by Yogeshojha
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of the reNgine server, allowing attackers to execute arbitrary commands with the privileges of the reNgine process, potentially leading to lateral movement, data exfiltration, or installation of persistent backdoors.
Likely Case
Unauthorized command execution by authenticated users, potentially leading to information disclosure, system reconnaissance, or limited privilege escalation within the reNgine environment.
If Mitigated
Limited impact with proper input validation and command sanitization in place, restricting users to intended nmap functionality only.
🎯 Exploit Status
Exploitation requires authenticated access to the reNgine interface and knowledge of command injection techniques. The advisory provides technical details but no public exploit code.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Version containing commit c28e5c8d304478a787811580b4d80b330920ace4
Vendor Advisory: https://github.com/yogeshojha/rengine/security/advisories/GHSA-cg75-ph7x-5rr9
Restart Required: No
Instructions:
1. Update to the latest version of reNgine that includes commit c28e5c8d304478a787811580b4d80b330920ace4. 2. Verify the fix by checking that user input in nmap_cmd parameters is properly sanitized. 3. No service restart should be required for web application updates.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement strict input validation on the nmap_cmd parameter to only allow expected nmap arguments and flags.
Implement server-side validation to restrict nmap_cmd to alphanumeric characters, hyphens, and specific nmap flags only
Access Control Restriction
allTemporarily restrict access to the nmap functionality to trusted administrators only.
Configure reNgine to require additional authentication or IP whitelisting for nmap scan functionality
🧯 If You Can't Patch
- Implement strict input validation at the application layer to sanitize all user input in nmap_cmd parameters
- Restrict nmap functionality to trusted users only and implement command whitelisting for allowed nmap arguments
🔍 How to Verify
Check if Vulnerable:
Check if your reNgine version includes commit c28e5c8d304478a787811580b4d80b330920ace4. Test by attempting to inject shell metacharacters (; & | ` $()) into the nmap_cmd parameter.Check Version:
git log --oneline | grep c28e5c8d304478a787811580b4d80b330920ace4Verify Fix Applied:
Verify that command injection attempts in the nmap_cmd parameter are rejected or properly escaped. Test with payloads like '; whoami' or '$(id)' to ensure they don't execute.📡 Detection & Monitoring
Log Indicators:
- Unusual nmap command patterns in application logs
- Commands containing shell metacharacters in nmap_cmd parameters
- Multiple failed command execution attempts
Network Indicators:
- Unexpected outbound connections from reNgine server
- Unusual port scanning patterns not matching typical nmap behavior
SIEM Query:
source="rengine_logs" AND (nmap_cmd="*;*" OR nmap_cmd="*`*" OR nmap_cmd="*$(*" OR nmap_cmd="*|*")