CVE-2025-12310
📋 TL;DR
This vulnerability in VirtFusion allows attackers to bypass rate limiting on email change authentication attempts, potentially enabling brute-force attacks to compromise user accounts. It affects VirtFusion installations up to version 6.0.2, particularly those with the email change functionality exposed.
💻 Affected Systems
- VirtFusion
⚠️ 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
Attackers could brute-force user credentials through the email change endpoint, leading to account takeover, privilege escalation, and potential access to sensitive virtual machine management functions.
Likely Case
Targeted brute-force attacks against specific user accounts, potentially compromising individual user credentials and associated virtual machines.
If Mitigated
With proper rate limiting and monitoring, impact is limited to temporary account lockouts and increased authentication logs.
🎯 Exploit Status
Exploit requires valid user credentials for initial authentication but bypasses rate limiting on subsequent email change attempts.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: Not available
Vendor Advisory: Not available
Restart Required: No
Instructions:
No official patch available. Vendor has not responded to disclosure. Consider upgrading to any future version beyond 6.0.2 if released.
🔧 Temporary Workarounds
Implement Web Application Firewall Rules
allConfigure WAF to enforce rate limiting on /account/_settings endpoint
Disable Email Change Functionality
allTemporarily disable email change feature until patch is available
🧯 If You Can't Patch
- Implement network-level rate limiting for /account/_settings endpoint
- Enable detailed logging and monitoring for authentication attempts on email change functionality
🔍 How to Verify
Check if Vulnerable:
Check VirtFusion version via admin panel or configuration files. If version is 6.0.2 or earlier, system is vulnerable.Check Version:
Check VirtFusion admin dashboard or configuration files for version informationVerify Fix Applied:
Test rate limiting on /account/_settings endpoint by attempting multiple email change requests in quick succession.📡 Detection & Monitoring
Log Indicators:
- Multiple failed authentication attempts from single IP on /account/_settings
- Unusual pattern of email change requests
Network Indicators:
- High volume of POST requests to /account/_settings endpoint
- Multiple authentication failures from same source
SIEM Query:
source_ip=* AND uri_path="/account/_settings" AND (status=401 OR status=403) | stats count by source_ip | where count > 10