CVE-2021-39082
📋 TL;DR
IBM UrbanCode Deploy 7.1.1.2 uses weak cryptographic algorithms that could allow attackers to decrypt sensitive information stored or transmitted by the system. This affects organizations using the vulnerable version of IBM UrbanCode Deploy for application deployment automation.
💻 Affected Systems
- IBM UrbanCode Deploy
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Attackers decrypt and exfiltrate sensitive deployment credentials, API keys, configuration secrets, and other protected data, leading to complete system compromise and lateral movement.
Likely Case
Attackers with network access decrypt stored credentials or sensitive configuration data, potentially gaining unauthorized access to deployment targets or source code repositories.
If Mitigated
With proper network segmentation and access controls, impact is limited to the UCD server itself without lateral movement capabilities.
🎯 Exploit Status
Exploitation requires access to encrypted data and knowledge of the weak algorithms used. No public exploit code has been observed.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 7.1.1.3 or later
Vendor Advisory: https://www.ibm.com/support/pages/node/6576179
Restart Required: Yes
Instructions:
1. Download IBM UrbanCode Deploy 7.1.1.3 or later from IBM Fix Central. 2. Backup current installation and configuration. 3. Stop UCD server. 4. Apply the update following IBM installation guide. 5. Restart UCD server. 6. Verify functionality.
🔧 Temporary Workarounds
Network Isolation
allRestrict network access to UCD server to only trusted administrative networks
Credential Rotation
allRotate all credentials stored in UCD that could be decrypted
🧯 If You Can't Patch
- Isolate UCD server from internet and restrict internal network access
- Monitor for unusual decryption attempts or credential usage patterns
🔍 How to Verify
Check if Vulnerable:
Check UCD version via web interface or server.properties file. If version is exactly 7.1.1.2, system is vulnerable.Check Version:
Check ${UCD_INSTALL_DIR}/server/conf/server.properties for 'version' property or use web interfaceVerify Fix Applied:
Verify UCD version is 7.1.1.3 or later. Check that cryptographic operations use strong algorithms (AES-256, SHA-256).📡 Detection & Monitoring
Log Indicators:
- Unusual decryption attempts
- Failed authentication with rotated credentials
- Multiple access attempts to encrypted data stores
Network Indicators:
- Unusual outbound connections from UCD server
- Traffic patterns suggesting data exfiltration
SIEM Query:
source="ucd.log" AND ("decrypt" OR "crypto" OR "algorithm") AND severity=WARNING|ERROR