CVE-2020-4965
📋 TL;DR
CVE-2020-4965 is a cryptographic weakness vulnerability in IBM Jazz Team Server products where weaker-than-expected encryption algorithms allow attackers to decrypt sensitive information. This affects organizations using IBM's collaborative development platforms for storing confidential data. The vulnerability exposes highly sensitive information that should be protected by strong cryptography.
💻 Affected Systems
- IBM Jazz Team Server
- IBM Rational Collaborative Lifecycle Management
- IBM Rational Quality Manager
- IBM Rational Team Concert
- IBM Rational DOORS Next Generation
- IBM Rational Engineering Lifecycle Manager
- IBM Rational Rhapsody Design Manager
📦 What is this software?
Collaborative Lifecycle Management by Ibm
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Collaborative Lifecycle Management by Ibm
View all CVEs affecting Collaborative Lifecycle Management →
Collaborative Lifecycle Management by Ibm
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Engineering Requirements Management Doors Next by Ibm
View all CVEs affecting Engineering Requirements Management Doors Next →
Engineering Requirements Management Doors Next by Ibm
View all CVEs affecting Engineering Requirements Management Doors Next →
Engineering Requirements Management Doors Next by Ibm
View all CVEs affecting Engineering Requirements Management Doors Next →
Rational Engineering Lifecycle Manager by Ibm
View all CVEs affecting Rational Engineering Lifecycle Manager →
Rational Engineering Lifecycle Manager by Ibm
View all CVEs affecting Rational Engineering Lifecycle Manager →
⚠️ Risk & Real-World Impact
Worst Case
Attackers decrypt stored sensitive information like credentials, intellectual property, or personal data, leading to data breaches, compliance violations, and reputational damage.
Likely Case
Attackers with network access decrypt intercepted or stored sensitive data, compromising confidentiality of development artifacts and user information.
If Mitigated
With proper network segmentation and access controls, only authorized users can access the vulnerable systems, limiting exposure to internal threats.
🎯 Exploit Status
Exploitation requires access to encrypted data and cryptographic analysis capabilities. No public exploit code has been documented.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply interim fix or upgrade to version 7.0.2 IF2 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/6441803
Restart Required: Yes
Instructions:
1. Download the interim fix from IBM Fix Central. 2. Stop the Jazz Team Server. 3. Apply the fix according to IBM instructions. 4. Restart the Jazz Team Server. 5. Verify the fix is applied.
🔧 Temporary Workarounds
Network Segmentation
allRestrict network access to Jazz Team Server to only trusted internal networks
Access Control Enhancement
allImplement strict authentication and authorization controls to limit who can access sensitive data
🧯 If You Can't Patch
- Isolate affected systems from untrusted networks and internet access
- Implement additional encryption layer for sensitive data stored in Jazz applications
🔍 How to Verify
Check if Vulnerable:
Check Jazz Team Server version via administrative console or by examining installation directory version filesCheck Version:
Check the Jazz installation directory for version information or use administrative console 'About' sectionVerify Fix Applied:
Verify version is 7.0.2 IF2 or later and check IBM security bulletin for specific fix verification steps📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to encrypted data stores
- Multiple failed decryption attempts
Network Indicators:
- Unusual outbound traffic containing what appears to be decrypted sensitive data
SIEM Query:
source="jazz_server" AND (event_type="crypto_error" OR event_type="decryption_failure")