CVE-2023-43381
📋 TL;DR
This SQL injection vulnerability in Tianchoy Blog v1.8.8 allows remote attackers to execute arbitrary SQL commands via the id parameter in login.php. Attackers can potentially extract sensitive database information including user credentials and other stored data. All deployments of Tianchoy Blog v1.8.8 are affected.
💻 Affected Systems
- Tianchoy Blog
📦 What is this software?
Blog by Tianchoy
⚠️ Risk & Real-World Impact
Worst Case
Complete database compromise leading to credential theft, data exfiltration, and potential remote code execution if database functions allow it.
Likely Case
Extraction of user credentials, session tokens, and other sensitive data from the database.
If Mitigated
Limited information disclosure if database permissions are restricted and input validation is partially implemented.
🎯 Exploit Status
Public proof-of-concept demonstrates exploitation via simple HTTP requests to login.php with malicious id parameter.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None found
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if available, or implement workarounds.
🔧 Temporary Workarounds
Input Validation and Sanitization
allAdd parameterized queries or proper input validation to login.php
Modify login.php to use prepared statements: $stmt = $conn->prepare('SELECT * FROM users WHERE id = ?'); $stmt->bind_param('s', $id);
Web Application Firewall Rules
allBlock SQL injection patterns in the id parameter
Add WAF rule: SecRule ARGS:id "@detectSQLi" "id:1001,phase:2,deny,status:403"
🧯 If You Can't Patch
- Implement network segmentation to restrict access to the blog application
- Enable detailed logging and monitoring for SQL injection attempts
🔍 How to Verify
Check if Vulnerable:
Test login.php with SQL injection payloads in id parameter: login.php?id=1' OR '1'='1Check Version:
Check blog configuration files or admin panel for version informationVerify Fix Applied:
Verify that SQL injection payloads no longer return database errors or unexpected data📡 Detection & Monitoring
Log Indicators:
- SQL syntax errors in web server logs
- Unusual database query patterns from login.php
Network Indicators:
- HTTP requests to login.php with SQL keywords in parameters
- Multiple failed login attempts with SQL payloads
SIEM Query:
source="web_logs" AND uri="*/login.php*" AND (param="*id=*'*" OR param="*id=*%27*")🔗 References
- https://gist.github.com/Chiaki2333/59ef607c3eb3a7b4db1537705d05e4d1
- https://github.com/Chiaki2333/vulnerability/blob/main/tianchoy-blog-sql-login.php.md
- https://gist.github.com/Chiaki2333/59ef607c3eb3a7b4db1537705d05e4d1
- https://github.com/Chiaki2333/vulnerability/blob/main/tianchoy-blog-sql-login.php.md
