CVE-2023-39805
📋 TL;DR
CVE-2023-39805 is a SQL injection vulnerability in iCMS v7.0.16 that allows attackers to execute arbitrary SQL commands via the where parameter in admincp.php. This affects all users running the vulnerable version of iCMS, potentially compromising the entire database and application.
💻 Affected Systems
- iCMS
📦 What is this software?
Icms by Idreamsoft
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data manipulation, authentication bypass, and potential remote code execution via database functions.
Likely Case
Unauthorized data access, privilege escalation, and potential administrative account takeover.
If Mitigated
Limited impact with proper input validation, parameterized queries, and WAF protection in place.
🎯 Exploit Status
Exploitation requires access to the admincp.php endpoint, which typically requires authentication. However, if authentication is bypassed or compromised, exploitation is straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v7.0.17 or later
Vendor Advisory: http://icms.com
Restart Required: No
Instructions:
1. Backup your database and application files. 2. Download the latest version from the official iCMS website. 3. Replace the vulnerable admincp.php file with the patched version. 4. Verify the fix by testing the where parameter functionality.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to sanitize the where parameter before processing
Add parameter validation in admincp.php: $where = filter_var($_GET['where'], FILTER_SANITIZE_STRING);
WAF Rule Implementation
allImplement web application firewall rules to block SQL injection patterns
Add WAF rule: SecRule ARGS:where "@detectSQLi" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Restrict access to admincp.php using IP whitelisting or network segmentation
- Implement database user privilege separation to limit potential damage
🔍 How to Verify
Check if Vulnerable:
Check if your iCMS version is 7.0.16 by examining the version file or admin panel. Test the where parameter with SQL injection payloads in a controlled environment.Check Version:
Check the version.php file or login to admin panel to see version informationVerify Fix Applied:
After patching, attempt to exploit the vulnerability with test payloads. Verify that SQL injection attempts are properly blocked or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts followed by admincp.php access
- WHERE parameter containing SQL keywords like UNION, SELECT, INSERT
Network Indicators:
- HTTP requests to admincp.php with suspicious where parameter values
- Unusual database connection patterns from web server
SIEM Query:
source="web_logs" AND uri="/admincp.php" AND (where="*UNION*" OR where="*SELECT*" OR where="*INSERT*")