CVE-2021-44302
📋 TL;DR
BaiCloud-cms v2.5.7 contains SQL injection vulnerabilities in the tongji and baidu_map parameters of /user/ztconfig.php. Attackers can execute arbitrary SQL commands to manipulate databases, potentially accessing, modifying, or deleting sensitive data. This affects all deployments using the vulnerable version.
💻 Affected Systems
- BaiCloud-cms
📦 What is this software?
Baicloud Cms by Baicloud Cms Project
⚠️ 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 database access allowing extraction of sensitive information like user credentials, configuration data, or content.
If Mitigated
Limited impact with proper input validation and database permissions restricting damage to non-critical data.
🎯 Exploit Status
SQL injection via URL parameters requires minimal technical skill; exploit code is publicly available.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Unknown
Vendor Advisory: None known
Restart Required: No
Instructions:
No official patch available. Consider upgrading to a newer version if exists, or apply workarounds.
🔧 Temporary Workarounds
Input Validation Filter
allAdd server-side validation to sanitize tongji and baidu_map parameters in /user/ztconfig.php.
Edit /user/ztconfig.php to filter input using prepared statements or parameterized queries.
Web Application Firewall (WAF)
allDeploy a WAF to block SQL injection patterns targeting the vulnerable endpoint.
Configure WAF rules to detect and block requests with SQL patterns in tongji/baidu_map parameters.
🧯 If You Can't Patch
- Restrict access to /user/ztconfig.php using IP whitelisting or authentication.
- Disable or remove the vulnerable functionality if not required for operations.
🔍 How to Verify
Check if Vulnerable:
Test by sending crafted SQL payloads to /user/ztconfig.php?tongji= or /user/ztconfig.php?baidu_map= parameters and observe database errors or behavior changes.Check Version:
Check CMS version in configuration files or admin panel; look for v2.5.7.Verify Fix Applied:
After applying fixes, retest with SQL injection payloads; successful fixes should return generic errors or no database interaction.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL errors in web server logs for /user/ztconfig.php
- Requests with SQL keywords (e.g., UNION, SELECT) in tongji or baidu_map parameters
Network Indicators:
- HTTP requests to /user/ztconfig.php with suspicious parameter values
- Abnormal database query patterns from the web server
SIEM Query:
source="web_logs" AND uri="/user/ztconfig.php" AND (param="tongji" OR param="baidu_map") AND (content MATCHES "(?i)(union|select|insert|update|delete|drop|--|#)")