CVE-2021-29688
📋 TL;DR
IBM Security Identity Manager 7.0.2 returns detailed technical error messages to remote attackers, potentially exposing sensitive system information. This information disclosure vulnerability could enable further attacks by revealing internal system details. Only IBM Security Identity Manager 7.0.2 installations are affected.
💻 Affected Systems
- IBM Security Identity Manager
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers obtain detailed system information that enables targeted follow-up attacks, potentially leading to full system compromise through chained vulnerabilities.
Likely Case
Attackers gather reconnaissance data about the system configuration, software versions, and internal paths that could facilitate other attacks.
If Mitigated
Limited information exposure with no direct system access, though some reconnaissance value remains.
🎯 Exploit Status
Exploitation requires triggering error conditions that return detailed messages, which is typically straightforward.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply interim fix or upgrade as specified in IBM advisories
Vendor Advisory: https://www.ibm.com/support/pages/node/6454587
Restart Required: Yes
Instructions:
1. Review IBM advisory 2. Apply recommended interim fix 3. Restart IBM Security Identity Manager services 4. Verify error messages no longer contain sensitive details
🔧 Temporary Workarounds
Configure Error Handling
allConfigure application to return generic error messages instead of detailed technical information
Network Segmentation
allRestrict access to IBM Security Identity Manager to trusted networks only
🧯 If You Can't Patch
- Implement web application firewall (WAF) rules to filter error responses containing sensitive information
- Monitor logs for unusual error patterns or repeated error triggering attempts
🔍 How to Verify
Check if Vulnerable:
Test by triggering application errors and checking if detailed technical information is returned in browser responsesCheck Version:
Check IBM Security Identity Manager version through administrative console or configuration filesVerify Fix Applied:
After patching, trigger same error conditions and verify only generic error messages are returned📡 Detection & Monitoring
Log Indicators:
- Unusual error patterns
- Repeated failed requests triggering errors
- Requests designed to generate error conditions
Network Indicators:
- HTTP responses containing detailed stack traces, internal paths, or system information
SIEM Query:
Search for HTTP 500 errors with response bodies containing 'exception', 'stack trace', or internal file paths🔗 References
- https://exchange.xforce.ibmcloud.com/vulnerabilities/200102
- https://www.ibm.com/support/pages/node/6454587
- https://www.ibm.com/support/pages/node/6454605
- https://exchange.xforce.ibmcloud.com/vulnerabilities/200102
- https://www.ibm.com/support/pages/node/6454587
- https://www.ibm.com/support/pages/node/6454605
