CVE-2023-34548
📋 TL;DR
Simple Customer Relationship Management 1.0 contains a SQL injection vulnerability in the email parameter that allows attackers to execute arbitrary SQL commands. This affects all users running version 1.0 of the software. Attackers can potentially access, modify, or delete database contents.
💻 Affected Systems
- Simple Customer Relationship Management
📦 What is this software?
Simple Customer Relationship Management by Simple Customer Relationship Management Project
View all CVEs affecting Simple Customer Relationship Management →
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to data theft, data destruction, or full system takeover via SQL injection to RCE chaining.
Likely Case
Unauthorized access to sensitive customer data, including personal information and business records stored in the database.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to non-critical data.
🎯 Exploit Status
SQL injection via email parameter is straightforward to exploit with common tools like sqlmap.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: Unknown
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available or implementing workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allImplement server-side validation and parameterized queries for the email parameter.
Implement prepared statements: $stmt = $pdo->prepare('SELECT * FROM users WHERE email = ?'); $stmt->execute([$email]);
Web Application Firewall (WAF)
allDeploy a WAF with SQL injection rules to block malicious requests.
Install and configure mod_security for Apache or equivalent for your web server with OWASP CRS rules.
🧯 If You Can't Patch
- Isolate the system from the internet and restrict access to trusted networks only.
- Implement strict database permissions, limiting application database user to read-only access where possible.
🔍 How to Verify
Check if Vulnerable:
Test the email parameter with SQL injection payloads like ' OR '1'='1 and observe if database errors or unexpected behavior occurs.Check Version:
Check application version in admin panel or configuration files; typically in about.php or similar.Verify Fix Applied:
After implementing fixes, retest with SQL injection payloads to ensure they are properly blocked or sanitized.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL syntax errors in application logs
- Multiple failed login attempts with SQL-like patterns in email field
Network Indicators:
- HTTP requests containing SQL keywords (SELECT, UNION, etc.) in email parameter
SIEM Query:
source="web_logs" AND (email="*' OR*" OR email="*UNION*" OR email="*SELECT*" OR email="*--*" OR email="*;*" OR email="*/*")