CVE-2024-4129
📋 TL;DR
An authentication bypass vulnerability in Snow License Manager allows attackers to gain unauthorized access when Active Directory authentication is enabled. This affects Snow License Manager versions 9.33.2 through 9.34.0 on Windows systems. Networked attackers can exploit this to bypass authentication mechanisms.
💻 Affected Systems
- Snow License Manager
⚠️ 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 compromise of the Snow License Manager system, allowing attackers to modify license data, deploy malicious software, or pivot to other systems in the network.
Likely Case
Unauthorized access to license management functions, potentially leading to license manipulation, data exfiltration, or privilege escalation within the system.
If Mitigated
Limited impact if proper network segmentation and access controls prevent lateral movement, though the initial system remains vulnerable to authentication bypass.
🎯 Exploit Status
The vulnerability allows authentication bypass without credentials when Active Directory is configured, suggesting relatively straightforward exploitation.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 9.34.1 or later
Vendor Advisory: https://community.snowsoftware.com/s/feed/0D5Td000008dv8sKAA
Restart Required: Yes
Instructions:
1. Download Snow License Manager version 9.34.1 or later from Snow Software portal. 2. Backup current configuration and data. 3. Run the installer to upgrade. 4. Restart the Snow License Manager service. 5. Verify authentication is working correctly.
🔧 Temporary Workarounds
Disable Active Directory Authentication
windowsTemporarily switch to local authentication or other non-AD methods until patching can be completed.
Configure authentication method in Snow License Manager administration console
Network Segmentation
allRestrict network access to Snow License Manager to only trusted administrative systems.
Configure firewall rules to limit access to specific IP addresses
🧯 If You Can't Patch
- Implement strict network access controls to limit which systems can communicate with Snow License Manager
- Enable detailed logging and monitoring for authentication attempts and license management activities
🔍 How to Verify
Check if Vulnerable:
Check Snow License Manager version in administration console or via 'About' dialog. Verify if version is between 9.33.2 and 9.34.0 and Active Directory authentication is enabled.Check Version:
Check version in Snow License Manager administration interface or registry key: HKEY_LOCAL_MACHINE\SOFTWARE\Snow Software\Snow License Manager\VersionVerify Fix Applied:
Confirm version is 9.34.1 or later in administration console. Test Active Directory authentication with valid and invalid credentials to ensure proper authentication behavior.📡 Detection & Monitoring
Log Indicators:
- Failed authentication attempts followed by successful access
- Authentication events from unexpected IP addresses
- License modifications from unauthenticated users
Network Indicators:
- Authentication requests to Snow License Manager from non-administrative systems
- Unusual license management traffic patterns
SIEM Query:
source="snow_license_manager" AND (event_type="authentication" AND result="success") AND NOT user IN ["expected_admin_users"]