CVE-2023-6916
📋 TL;DR
CVE-2023-6916 is an information disclosure vulnerability where OpenAPI audit logs may contain sensitive data like credentials or tokens. This affects systems using vulnerable versions of software that implement OpenAPI endpoints with logging enabled. Attackers could leverage exposed information to gain unauthorized access.
💻 Affected Systems
- Software implementing OpenAPI endpoints with audit logging
⚠️ Manual Verification Required
This CVE does not have specific version information in our database, so automatic vulnerability detection cannot determine if your system is affected.
Why? The CVE database entry doesn't specify which versions are vulnerable (no version ranges provided by the vendor/NVD).
🔒 Custom verification scripts are available for registered users. Sign up free to download automated test scripts.
- Review the CVE details at NVD
- Check vendor security advisories for your specific version
- Test if the vulnerability is exploitable in your environment
- Consider updating to the latest version as a precaution
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise through credential theft leading to privilege escalation and lateral movement across the network.
Likely Case
Exposure of sensitive API tokens or credentials allowing unauthorized API access and data exfiltration.
If Mitigated
Limited impact with proper log access controls and monitoring, though sensitive data may still be exposed in logs.
🎯 Exploit Status
Exploitation requires access to audit logs containing sensitive OpenAPI request data. No public exploit code identified.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor-specific updates
Vendor Advisory: https://security.nozominetworks.com/NN-2023:17-01
Restart Required: Yes
Instructions:
1. Identify affected software versions. 2. Apply vendor-provided patches. 3. Restart services. 4. Verify audit logs no longer contain sensitive OpenAPI data.
🔧 Temporary Workarounds
Disable OpenAPI audit logging
allTemporarily disable audit logging for OpenAPI endpoints to prevent sensitive data exposure
Configure audit settings to exclude OpenAPI endpoints from logging
Restrict log access
linuxImplement strict access controls on audit log files and directories
chmod 600 /var/log/audit.log
setfacl -m u:audit:r-- /var/log/audit.log
🧯 If You Can't Patch
- Implement strict access controls on audit log storage and transmission
- Enable encryption for audit log files and implement regular log review procedures
🔍 How to Verify
Check if Vulnerable:
Review audit logs for OpenAPI requests containing sensitive data like tokens or credentialsCheck Version:
Check software version against vendor patched versionsVerify Fix Applied:
Confirm audit logs no longer contain sensitive OpenAPI request data after patch application📡 Detection & Monitoring
Log Indicators:
- Audit logs containing full OpenAPI request payloads with sensitive data
- Unauthorized access attempts to audit log files
Network Indicators:
- Unusual API access patterns following log file access
SIEM Query:
source="audit.log" AND "OpenAPI" AND ("token" OR "password" OR "credential")