CVE-2020-4921
📋 TL;DR
This SQL injection vulnerability in IBM Security Guardium allows remote attackers to execute arbitrary SQL commands against the database. Attackers could view, modify, or delete sensitive data stored in Guardium's backend database. Organizations using IBM Security Guardium versions 10.6 and 11.2 are affected.
💻 Affected Systems
- IBM Security Guardium
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of Guardium database including exfiltration of all monitored database activity logs, modification of security policies, and potential lateral movement to connected databases.
Likely Case
Data theft of sensitive database monitoring information, privilege escalation within Guardium, and potential manipulation of security audit trails.
If Mitigated
Limited impact with proper input validation and database permissions, potentially only allowing information disclosure without data modification.
🎯 Exploit Status
SQL injection vulnerabilities are commonly exploited and weaponized tools exist for automated exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fixes from IBM Security Bulletin
Vendor Advisory: https://www.ibm.com/support/pages/node/6405952
Restart Required: Yes
Instructions:
1. Review IBM Security Bulletin. 2. Download and apply the appropriate fix for your Guardium version. 3. Restart Guardium services. 4. Verify the fix is applied correctly.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Guardium management interfaces to authorized IP addresses only
Input Validation Enhancement
allImplement additional input validation at web application firewall or proxy level
🧯 If You Can't Patch
- Implement strict network segmentation to isolate Guardium from untrusted networks
- Deploy web application firewall with SQL injection protection rules
🔍 How to Verify
Check if Vulnerable:
Check Guardium version via web interface or command line. Versions 10.6 and 11.2 are vulnerable.Check Version:
Login to Guardium and check version in System Settings or use Guardium CLIVerify Fix Applied:
Verify patch installation through Guardium patch management interface and confirm version is no longer vulnerable.📡 Detection & Monitoring
Log Indicators:
- Unusual SQL query patterns in Guardium logs
- Multiple failed authentication attempts followed by successful access
- Unexpected database schema changes
Network Indicators:
- Unusual SQL syntax in HTTP requests to Guardium
- Multiple rapid requests with SQL-like payloads
SIEM Query:
source="guardium" AND (http_request CONTAINS "UNION" OR http_request CONTAINS "SELECT *" OR http_request CONTAINS "DROP TABLE")