CVE-2021-38886
📋 TL;DR
This CVE describes a Cross-Site Request Forgery (CSRF) vulnerability in IBM Cognos Analytics versions 11.1.7 and 11.2.0. An attacker could trick authenticated users into performing unauthorized actions on the Cognos Analytics platform. Organizations running these specific IBM Cognos Analytics versions are affected.
💻 Affected Systems
- IBM Cognos Analytics
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
An attacker could perform administrative actions, modify configurations, access sensitive data, or compromise the entire Cognos Analytics environment through a victim's authenticated session.
Likely Case
Attackers could modify reports, dashboards, or user permissions, potentially leading to data manipulation or unauthorized access to business intelligence data.
If Mitigated
With proper CSRF protections and network segmentation, the impact is limited to potential unauthorized actions within the user's own permission scope.
🎯 Exploit Status
CSRF attacks typically require social engineering to trick authenticated users into visiting malicious pages.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fix packs as specified in IBM advisory
Vendor Advisory: https://www.ibm.com/support/pages/node/6570957
Restart Required: Yes
Instructions:
1. Review IBM advisory at provided URL. 2. Download and apply appropriate fix packs for your version. 3. Restart Cognos Analytics services. 4. Verify the fix is applied.
🔧 Temporary Workarounds
Implement CSRF Tokens
allAdd anti-CSRF tokens to all state-changing requests in custom applications
SameSite Cookie Attribute
allConfigure cookies with SameSite=Strict or Lax attributes
🧯 If You Can't Patch
- Implement network segmentation to restrict access to Cognos Analytics from untrusted networks
- Use web application firewalls (WAF) with CSRF protection rules
🔍 How to Verify
Check if Vulnerable:
Check IBM Cognos Analytics version via administration console or configuration filesCheck Version:
Check Cognos Configuration or administration console for version informationVerify Fix Applied:
Verify applied fix pack version matches or exceeds IBM's recommended version in advisory📡 Detection & Monitoring
Log Indicators:
- Unusual administrative actions from unexpected user sessions
- Multiple failed authentication attempts followed by successful CSRF exploitation
Network Indicators:
- Requests lacking CSRF tokens to state-changing endpoints
- Referer header mismatches in POST requests
SIEM Query:
Search for POST requests to Cognos endpoints without CSRF tokens from external referers🔗 References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/209399
- https://security.netapp.com/advisory/ntap-20220602-0003/
- https://www.ibm.com/support/pages/node/6570957
- https://exchange.xforce.ibmcloud.com/vulnerabilities/209399
- https://security.netapp.com/advisory/ntap-20220602-0003/
- https://www.ibm.com/support/pages/node/6570957
