CVE-2020-28994
📋 TL;DR
An unauthenticated SQL injection vulnerability in Karenderia Multiple Restaurant System allows attackers to execute arbitrary SQL commands on the database. This affects all versions 5.4.2 and below, potentially enabling complete database compromise including data theft, modification, or deletion.
💻 Affected Systems
- Karenderia Multiple Restaurant System
📦 What is this software?
Karenderia Multiple Restaurant System by Karenderia Multiple Restaurant System Project
View all CVEs affecting Karenderia Multiple Restaurant System →
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise including theft of all customer data, financial information, and administrative credentials, followed by system takeover or ransomware deployment.
Likely Case
Data exfiltration of sensitive information (customer PII, payment details, credentials) and potential defacement or modification of restaurant content.
If Mitigated
Limited impact if proper network segmentation, WAF rules, and input validation are in place, though SQL injection attempts may still be logged.
🎯 Exploit Status
Public proof-of-concept code exists showing SQL injection vectors. Attack requires no authentication and uses simple SQL injection techniques.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 5.4.3 or later
Vendor Advisory: https://gist.github.com/wes4m/e32080b02c2cd668d50eeac66613ca1d
Restart Required: No
Instructions:
1. Backup database and application files. 2. Download latest version from official source. 3. Replace vulnerable files with patched version. 4. Test functionality. 5. Monitor for any issues.
🔧 Temporary Workarounds
Web Application Firewall (WAF)
allDeploy WAF with SQL injection rules to block malicious requests
Input Validation Filter
allImplement application-level input validation for all user inputs
🧯 If You Can't Patch
- Isolate the system behind a firewall with strict access controls
- Implement network segmentation to limit database access
🔍 How to Verify
Check if Vulnerable:
Check version number in admin panel or system configuration files. If version is 5.4.2 or below, system is vulnerable.Check Version:
Check admin panel or examine system configuration files for version informationVerify Fix Applied:
Verify version is 5.4.3 or later. Test SQL injection attempts should be blocked or properly sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL error messages in application logs
- Multiple failed login attempts from single IP
- Suspicious database queries in MySQL logs
Network Indicators:
- SQL injection patterns in HTTP requests
- Unusual outbound database connections
- High volume of requests to vulnerable endpoints
SIEM Query:
source="web_logs" AND ("' OR" OR "UNION SELECT" OR "--" OR ";--") AND uri="*/karenderia/*"