CVE-2024-23847
📋 TL;DR
This CVE describes an incorrect default permissions vulnerability in Unifier and Unifier Cast software that allows local attackers to execute arbitrary code with LocalSystem privileges. Attackers could install malicious programs, alter data, or delete files. Organizations using affected versions of these products are at risk.
💻 Affected Systems
- Unifier
- Unifier Cast
⚠️ 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
Complete system compromise with LocalSystem privileges leading to malware installation, data destruction, and persistent backdoor establishment.
Likely Case
Local privilege escalation allowing attackers to gain SYSTEM-level access and potentially install additional payloads or modify system configurations.
If Mitigated
Limited impact if proper access controls and least privilege principles are already implemented, though the vulnerability still exists.
🎯 Exploit Status
Exploitation requires local access but appears straightforward based on CWE-276 (Incorrect Default Permissions) classification
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Check vendor advisories for specific patched versions
Vendor Advisory: https://www.yrl.com/fwp_support/info/khvu7f00000000q7.html
Restart Required: Yes
Instructions:
1. Review vendor advisories for affected versions. 2. Download and apply the latest patches from official vendor sources. 3. Restart affected systems to complete installation. 4. Verify patch application using version checks.
🔧 Temporary Workarounds
Restrict Local Access
allLimit local access to affected systems to trusted users only
Implement Least Privilege
windowsEnsure users operate with minimal necessary privileges to reduce impact if exploited
🧯 If You Can't Patch
- Isolate affected systems from critical network segments
- Implement strict access controls and monitor for suspicious local privilege escalation attempts
🔍 How to Verify
Check if Vulnerable:
Check installed version against vendor's affected version list in advisoriesCheck Version:
Check application documentation for version query method; typically through application interface or installation directory propertiesVerify Fix Applied:
Verify version number matches or exceeds patched version specified in vendor advisory📡 Detection & Monitoring
Log Indicators:
- Unexpected LocalSystem privilege acquisition
- Unusual process execution with SYSTEM context
- Permission modification events on Unifier files
Network Indicators:
- Not applicable - local exploitation only
SIEM Query:
EventID=4688 AND NewProcessName contains 'unifier' AND SubjectUserName='SYSTEM' AND NOT ParentProcessName contains expected processes🔗 References
- https://jvn.jp/en/jp/JVN17680667/
- https://www.yrl.com/fwp_support/info/khvu7f00000000q7.html
- https://www.yrl.com/fwp_support/info/khvu7f00000007j8.html
- https://www.yrl.com/fwp_support/info/khvu7f0000000auf.html
- https://jvn.jp/en/jp/JVN17680667/
- https://www.yrl.com/fwp_support/info/khvu7f00000000q7.html
