CVE-2021-37478
📋 TL;DR
CVE-2021-37478 is a SQL injection vulnerability in NavigateCMS that allows attackers to execute arbitrary SQL queries through the 'block-order' parameter in the 'block' function. This affects all users running NavigateCMS version 2.9.4 and below, potentially compromising the backend database.
💻 Affected Systems
- NavigateCMS
📦 What is this software?
Navigatecms by Naviwebs
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, privilege escalation, and potential remote code execution via database functions.
Likely Case
Database information disclosure, data manipulation, and potential authentication bypass.
If Mitigated
Limited impact with proper input validation and parameterized queries in place.
🎯 Exploit Status
Exploitation requires authentication to access the vulnerable function. Public proof-of-concept demonstrates SQL injection via the block-order parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.9.5 and above
Vendor Advisory: https://github.com/NavigateCMS/Navigate-CMS/issues/26
Restart Required: No
Instructions:
1. Backup your database and files. 2. Download NavigateCMS version 2.9.5 or later from the official repository. 3. Replace the vulnerable files with patched versions. 4. Verify the fix by checking the version.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize the block-order parameter before processing.
Modify the vulnerable function to validate and sanitize the block-order parameter using prepared statements or parameterized queries.
🧯 If You Can't Patch
- Implement a web application firewall (WAF) with SQL injection rules to block malicious requests.
- Restrict access to the vulnerable function to trusted IP addresses only.
🔍 How to Verify
Check if Vulnerable:
Check if your NavigateCMS version is 2.9.4 or below. Review the block function code for lack of parameterized queries on the block-order parameter.Check Version:
Check the version in the CMS admin panel or review the version file in the installation directory.Verify Fix Applied:
Verify the version is 2.9.5 or above. Test the block function with SQL injection payloads to ensure they are blocked.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by block function access
- Requests with SQL injection patterns in block-order parameter
Network Indicators:
- HTTP POST requests to block function with suspicious parameters
- Unusual database traffic patterns
SIEM Query:
source="web_logs" AND uri="*/block*" AND (param="block-order" AND value MATCHES "*' OR *")🔗 References
- https://gist.github.com/victomteng1997/ed429fed7de46651c89f05e7591fd4fe
- https://github.com/NavigateCMS/Navigate-CMS
- https://github.com/NavigateCMS/Navigate-CMS/issues/26
- https://gist.github.com/victomteng1997/ed429fed7de46651c89f05e7591fd4fe
- https://github.com/NavigateCMS/Navigate-CMS
- https://github.com/NavigateCMS/Navigate-CMS/issues/26
