CVE-2020-19248
📋 TL;DR
This SQL injection vulnerability in PbootCMS 1.4.1 allows attackers to inject malicious SQL code through template parsing. Attackers can contaminate template content via search page URLs, which gets executed when the system uses eval statements to parse templates. This affects all PbootCMS 1.4.1 installations with vulnerable template parsing enabled.
💻 Affected Systems
- PbootCMS
📦 What is this software?
Pbootcms by Pbootcms
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including data theft, modification, or deletion; potential for remote code execution through SQL injection escalation.
Likely Case
Database information disclosure, unauthorized data access, and potential privilege escalation within the CMS.
If Mitigated
Limited impact with proper input validation and WAF protection, potentially only error messages or partial data exposure.
🎯 Exploit Status
Public proof-of-concept exists showing exploitation via search page URL manipulation. No authentication required to trigger the vulnerability.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.4.2 or later
Vendor Advisory: https://github.com/hnaoyun/PbootCMS
Restart Required: No
Instructions:
1. Backup current installation and database. 2. Download latest version from official repository. 3. Replace affected files with patched versions. 4. Clear template cache if applicable.
🔧 Temporary Workarounds
Input Validation Filter
allAdd input validation to filter SQL injection patterns in search parameters
Modify template parsing functions to sanitize user input before eval execution
Disable Vulnerable Templates
allRemove or disable template files containing vulnerable if statement parsing
Identify and remove affected template files from templates directory
🧯 If You Can't Patch
- Implement web application firewall (WAF) with SQL injection rules
- Restrict access to search functionality and monitor for suspicious URL patterns
🔍 How to Verify
Check if Vulnerable:
Check if running PbootCMS version 1.4.1 and test search functionality with SQL injection payloads in URL parametersCheck Version:
Check PbootCMS version in admin panel or examine core files for version informationVerify Fix Applied:
Verify version is 1.4.2 or later and test same SQL injection payloads to confirm they're blocked📡 Detection & Monitoring
Log Indicators:
- Unusual SQL queries in database logs
- Multiple failed login attempts following search requests
- Error messages containing SQL syntax in application logs
Network Indicators:
- HTTP requests with SQL keywords in search parameters
- Unusual traffic patterns to search endpoints
SIEM Query:
source="web_logs" AND (url="*search*" AND (url="*SELECT*" OR url="*UNION*" OR url="*OR*"))