CVE-2025-33012
📋 TL;DR
This vulnerability in IBM Db2 allows authenticated users to regain access to their accounts even after being locked out due to password expiration. It affects IBM Db2 versions 10.5.0-10.5.11, 11.1.0-11.1.4.7, 11.5.0-11.5.9, and 12.1.0-12.1.3 running on Linux systems.
💻 Affected Systems
- IBM Db2
📦 What is this software?
Db2 by Ibm
Db2 by Ibm
Db2 by Ibm
Db2 by Ibm
⚠️ Risk & Real-World Impact
Worst Case
An attacker with valid credentials could maintain persistent access to a Db2 database even after their account should have been locked, potentially leading to unauthorized data access, modification, or exfiltration.
Likely Case
Legitimate users or attackers with compromised credentials bypassing account lockout policies, maintaining unauthorized access to database resources.
If Mitigated
Minimal impact if strong authentication controls, network segmentation, and monitoring are in place to detect unusual access patterns.
🎯 Exploit Status
Exploitation requires valid user credentials. The vulnerability appears to be a logic flaw in account lockout handling.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fixes as specified in IBM advisory APAR IJ52530
Vendor Advisory: https://www.ibm.com/support/pages/node/7250469
Restart Required: Yes
Instructions:
1. Review IBM advisory APAR IJ52530. 2. Apply the appropriate fix pack for your Db2 version. 3. Restart Db2 services. 4. Verify the fix is applied.
🔧 Temporary Workarounds
Enforce Strong Password Policies
allImplement strict password policies including regular forced password changes and account lockout after failed attempts
Monitor Account Access
allImplement enhanced monitoring for account access patterns, especially for accounts that should be locked
🧯 If You Can't Patch
- Implement network segmentation to restrict Db2 access to authorized users only
- Enhance monitoring and alerting for unusual authentication patterns
🔍 How to Verify
Check if Vulnerable:
Check Db2 version using 'db2level' command and compare against affected versionsCheck Version:
db2levelVerify Fix Applied:
Verify applied fix pack version and test account lockout functionality with expired passwords📡 Detection & Monitoring
Log Indicators:
- Successful authentication attempts for accounts that should be locked
- Repeated authentication attempts with expired passwords
Network Indicators:
- Unusual database access patterns from accounts that should be inactive
SIEM Query:
source="db2" AND (event_type="authentication_success" AND account_status="locked")