CVE-2022-27360
📋 TL;DR
SpringBlade v3.2.0 and below contains a SQL injection vulnerability in the customSqlSegment component that allows attackers to execute arbitrary SQL commands. This affects all deployments using vulnerable versions of the SpringBlade framework. Successful exploitation could lead to data theft, data manipulation, or complete system compromise.
💻 Affected Systems
- SpringBlade
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full database compromise allowing data exfiltration, data destruction, privilege escalation to database administrator, and potential remote code execution through database functions.
Likely Case
Unauthorized data access and extraction of sensitive information from the database, potentially including user credentials, personal data, and business information.
If Mitigated
Limited impact with proper input validation, parameterized queries, and database permission restrictions in place.
🎯 Exploit Status
SQL injection vulnerabilities are well-understood with many available exploitation tools. The specific component vulnerability has been publicly documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v3.2.1 or later
Vendor Advisory: https://gitee.com/smallc/SpringBlade
Restart Required: Yes
Instructions:
1. Upgrade SpringBlade to version 3.2.1 or later. 2. Review and update all customSqlSegment implementations to use parameterized queries. 3. Restart the application server.
🔧 Temporary Workarounds
Input Validation Filter
allImplement strict input validation to reject SQL special characters in user inputs
Implement input validation in application code to filter: ', ", ;, --, #, /*, */, union, select, insert, update, delete, drop, create, alter
Database Permission Restriction
allLimit database user permissions to minimum required operations
REVOKE ALL PRIVILEGES ON database.* FROM 'app_user'@'%';
GRANT SELECT, INSERT, UPDATE ON specific_tables TO 'app_user'@'%';
🧯 If You Can't Patch
- Implement Web Application Firewall (WAF) with SQL injection rules
- Isolate the vulnerable system behind additional network segmentation
🔍 How to Verify
Check if Vulnerable:
Check SpringBlade version in pom.xml or application properties. If version is 3.2.0 or below, review UserMapper.xml for vulnerable customSqlSegment implementations.Check Version:
grep -i 'springblade' pom.xml | grep -i 'version' OR check application.properties for springblade.versionVerify Fix Applied:
Verify SpringBlade version is 3.2.1 or later and review that customSqlSegment uses parameterized queries (#{param}) instead of string concatenation.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns in database logs
- Multiple failed login attempts with SQL special characters
- Long or malformed SQL queries from application
Network Indicators:
- HTTP requests containing SQL keywords in parameters
- Unusual database connection patterns from application servers
SIEM Query:
source="web_logs" AND ("union" OR "select" OR "insert" OR "' OR '1'='1") AND status=200🔗 References
- https://forum.butian.net/share/1089
- https://gitee.com/smallc/SpringBlade/blob/master/blade-service/blade-user/src/main/java/org/springblade/system/user/mapper/UserMapper.xml
- https://saber.bladex.vip/#/login
- https://forum.butian.net/share/1089
- https://gitee.com/smallc/SpringBlade/blob/master/blade-service/blade-user/src/main/java/org/springblade/system/user/mapper/UserMapper.xml
- https://saber.bladex.vip/#/login
