CVE-2021-20470
📋 TL;DR
IBM Cognos Analytics versions 11.1.7 and 11.2.0 have a weak default password policy that doesn't enforce strong passwords. This makes user accounts vulnerable to brute-force attacks and credential guessing. Organizations using these default configurations are affected.
💻 Affected Systems
- IBM Cognos Analytics
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers compromise administrative accounts, gain full system access, exfiltrate sensitive business intelligence data, and deploy ransomware or other malware.
Likely Case
Attackers compromise regular user accounts to access confidential reports, dashboards, and business data stored in Cognos Analytics.
If Mitigated
With strong password policies enforced, risk reduces to standard authentication attacks requiring more sophisticated techniques.
🎯 Exploit Status
Exploitation requires authentication attempts but is trivial with password spraying or brute-force tools.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply security updates as per IBM advisory
Vendor Advisory: https://www.ibm.com/support/pages/node/6520510
Restart Required: Yes
Instructions:
1. Review IBM advisory. 2. Apply recommended security updates. 3. Restart Cognos Analytics services. 4. Verify password policies are enforced.
🔧 Temporary Workarounds
Enforce Strong Password Policy
allManually configure password policies to require complexity, length, and expiration
Configure via Cognos Configuration tool: Set password policy parameters in cogstartup.xml
🧯 If You Can't Patch
- Implement multi-factor authentication for all Cognos Analytics users
- Deploy network segmentation and restrict access to Cognos Analytics to trusted IP ranges only
🔍 How to Verify
Check if Vulnerable:
Check Cognos Analytics version via administration console and verify if default password policy allows weak passwordsCheck Version:
Check IBM Cognos Administration > Status > AboutVerify Fix Applied:
Verify password policy enforces minimum 12 characters, complexity, and prevents common passwords📡 Detection & Monitoring
Log Indicators:
- Multiple failed login attempts from single IP
- Successful logins after many failures
- Authentication logs showing weak password acceptance
Network Indicators:
- Unusual authentication traffic patterns
- Brute-force tool signatures in network traffic
SIEM Query:
source="cognos_auth.log" (event="login_failed" count by src_ip > 10) OR (event="login_success" after multiple failures)🔗 References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/196939
- https://security.netapp.com/advisory/ntap-20211223-0006/
- https://www.ibm.com/support/pages/node/6520510
- https://exchange.xforce.ibmcloud.com/vulnerabilities/196939
- https://security.netapp.com/advisory/ntap-20211223-0006/
- https://www.ibm.com/support/pages/node/6520510
