CVE-2021-22516
📋 TL;DR
CVE-2021-22516 is a sensitive information disclosure vulnerability in Micro Focus Secure API Manager (SAPIM) version 2.0.0 where sensitive data like credentials or API keys may be written to log files. This affects organizations using the vulnerable SAPIM version for API management. Attackers could potentially access these logs to steal sensitive information.
💻 Affected Systems
- Micro Focus Secure API Manager (SAPIM)
📦 What is this software?
⚠️ Risk & Real-World Impact
Worst Case
Full compromise of API credentials leading to unauthorized access to all managed APIs, data exfiltration, and lateral movement within the organization's API ecosystem.
Likely Case
Exposure of API keys, authentication tokens, or configuration secrets that could be used to access specific APIs or services.
If Mitigated
Limited exposure of non-critical information if proper log access controls and monitoring are in place.
🎯 Exploit Status
Exploitation requires access to log files, which typically requires some level of system access or misconfiguration.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.0.1 and later
Vendor Advisory: https://www.microfocus.com/documentation/secure-api-manager/2-0/release-notes-secure-api-manager-201/release-notes-secure-api-manager-201.html
Restart Required: Yes
Instructions:
1. Download SAPIM version 2.0.1 or later from Micro Focus support portal. 2. Backup current configuration and data. 3. Stop SAPIM services. 4. Install the updated version. 5. Restore configuration if needed. 6. Restart services.
🔧 Temporary Workarounds
Restrict log file access
linuxSet strict file permissions on log directories to prevent unauthorized access
chmod 640 /var/log/sapim/*
chown root:sapim /var/log/sapim/*
Disable sensitive logging
allConfigure SAPIM to exclude sensitive parameters from logging
🧯 If You Can't Patch
- Implement strict access controls on log directories and files
- Deploy log monitoring to detect unauthorized access attempts
🔍 How to Verify
Check if Vulnerable:
Check SAPIM version via admin console or configuration files. Version 2.0.0 is vulnerable.Check Version:
Check the version in SAPIM admin interface or review installation documentationVerify Fix Applied:
Verify installed version is 2.0.1 or later and check that sensitive data no longer appears in log files.📡 Detection & Monitoring
Log Indicators:
- Unauthorized access attempts to log files
- Log entries containing API keys, passwords, or tokens
Network Indicators:
- Unusual API access patterns from unexpected sources
SIEM Query:
source="sapim_logs" AND ("password" OR "api_key" OR "token")