CVE-2024-51466
📋 TL;DR
IBM Cognos Analytics is vulnerable to Expression Language (EL) Injection, allowing remote attackers to execute malicious EL statements. This can lead to sensitive information disclosure, memory exhaustion, or server crashes. Affected versions include Cognos Analytics 11.2.0 through 11.2.4 FP4 and 12.0.0 through 12.0.4.
💻 Affected Systems
- IBM Cognos Analytics
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Complete server compromise leading to data exfiltration, denial of service, or remote code execution depending on server configuration.
Likely Case
Sensitive information disclosure and potential server crashes causing business disruption.
If Mitigated
Limited impact with proper network segmentation and access controls, though vulnerability remains present.
🎯 Exploit Status
EL injection vulnerabilities typically have low exploitation complexity once the attack vector is identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply IBM Cognos Analytics Interim Fixes as specified in the vendor advisory
Vendor Advisory: https://www.ibm.com/support/pages/node/7179496
Restart Required: Yes
Instructions:
1. Review IBM advisory 7179496. 2. Download appropriate interim fix for your version. 3. Apply fix following IBM documentation. 4. Restart Cognos services. 5. Verify fix application.
🔧 Temporary Workarounds
Network Access Restriction
allRestrict access to Cognos Analytics to trusted networks only
Web Application Firewall
allDeploy WAF with EL injection detection rules
🧯 If You Can't Patch
- Isolate Cognos Analytics servers behind strict network segmentation
- Implement strong authentication and limit user privileges to minimum required
🔍 How to Verify
Check if Vulnerable:
Check Cognos Analytics version against affected ranges: 11.2.0-11.2.4 FP4 or 12.0.0-12.0.4Check Version:
Check Cognos Configuration or Administration console for version informationVerify Fix Applied:
Verify version is updated beyond affected ranges and check for applied interim fixes📡 Detection & Monitoring
Log Indicators:
- Unusual EL expressions in request logs
- Multiple failed requests with EL syntax
- Memory exhaustion errors in server logs
Network Indicators:
- Unusual patterns of requests to Cognos endpoints
- Requests containing EL syntax patterns
SIEM Query:
source="cognos_logs" AND (message="*${*" OR message="*#{" OR message="*memory*exhaust*")