CVE-2020-4607
📋 TL;DR
CVE-2020-4607 is an improper input validation vulnerability in IBM Security Secret Server (IBM Security Verify Privilege Vault Remote 1.2) that allows a local user to bypass security restrictions. This affects organizations using the vulnerable IBM security software, potentially enabling unauthorized access to privileged information.
💻 Affected Systems
- IBM Security Secret Server
- IBM Security Verify Privilege Vault Remote
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
A local attacker could gain unauthorized access to sensitive secrets and credentials stored in the vault, leading to privilege escalation and lateral movement within the network.
Likely Case
Local authenticated users could bypass intended security controls to access secrets they shouldn't have permission to view.
If Mitigated
With proper access controls and network segmentation, impact is limited to the local system where the vulnerability exists.
🎯 Exploit Status
Exploitation requires local access to the system but appears to be straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Apply fix as specified in IBM advisory
Vendor Advisory: https://www.ibm.com/support/pages/node/6338813
Restart Required: Yes
Instructions:
1. Review IBM advisory at the provided URL. 2. Apply the recommended fix from IBM. 3. Restart affected services. 4. Verify the fix is applied correctly.
🔧 Temporary Workarounds
Restrict Local Access
allLimit local user access to systems running the vulnerable component
Network Segmentation
allIsolate systems running the vulnerable component from general user networks
🧯 If You Can't Patch
- Implement strict access controls to limit who can access the local system
- Monitor for unusual access patterns to the secret vault and implement additional logging
🔍 How to Verify
Check if Vulnerable:
Check if IBM Security Verify Privilege Vault Remote version 1.2 is installed on your systemsCheck Version:
Check IBM Security Verify Privilege administration console or documentation for version informationVerify Fix Applied:
Verify the fix has been applied by checking the version against IBM's patched version and confirming no security bypass occurs📡 Detection & Monitoring
Log Indicators:
- Unusual access patterns to secret vault
- Failed authentication attempts followed by successful access
- Local user accessing privileged secrets
Network Indicators:
- Unusual outbound connections from the vault server
SIEM Query:
source="ibm_security_vault" AND (event_type="secret_access" OR event_type="authentication_bypass")