CVE-2024-39904
📋 TL;DR
VNote versions before 3.18.1 contain a code execution vulnerability where attackers can embed malicious file:/// URIs in notes to execute arbitrary programs on victims' systems. This affects all users running vulnerable VNote versions who open or receive crafted note files. The vulnerability allows execution of local executables like cmd.exe or calc.exe through specially crafted links.
💻 Affected Systems
- VNote
⚠️ 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 allowing attackers to execute arbitrary commands, install malware, steal data, or pivot to other systems.
Likely Case
Local code execution leading to data theft, ransomware deployment, or credential harvesting from the victim's machine.
If Mitigated
Limited impact if proper network segmentation and endpoint protection are in place, though local execution still possible.
🎯 Exploit Status
Exploitation requires user interaction to open a malicious note file. The technique is simple and well-documented in the advisory.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 3.18.1
Vendor Advisory: https://github.com/vnotex/vnote/security/advisories/GHSA-vhh5-8wcv-68gj
Restart Required: Yes
Instructions:
1. Download VNote 3.18.1 or later from official sources. 2. Uninstall previous version. 3. Install new version. 4. Restart system to ensure clean state.
🔧 Temporary Workarounds
Disable file:/// URI handling
allConfigure system or browser to block file:/// protocol execution from VNote
Use sandboxed environment
allRun VNote in a sandbox or virtual machine to contain potential exploitation
🧯 If You Can't Patch
- Restrict note sharing and only open notes from trusted sources
- Implement application whitelisting to block execution of unauthorized programs
🔍 How to Verify
Check if Vulnerable:
Check VNote version in Help > About. If version is below 3.18.1, system is vulnerable.Check Version:
On Windows: Check Help > About in VNote GUI. On Linux/macOS: Run 'vnote --version' in terminal if available.Verify Fix Applied:
After updating, verify version is 3.18.1 or higher in Help > About. Test that file:/// URIs no longer execute programs.📡 Detection & Monitoring
Log Indicators:
- Process execution from VNote to unexpected executables like cmd.exe, powershell.exe, or calc.exe
- File access attempts to system directories from VNote process
Network Indicators:
- Unusual outbound connections from VNote process following note opening
SIEM Query:
Process Creation where ParentImage contains 'vnote.exe' and (Image contains 'cmd.exe' or Image contains 'powershell.exe' or Image contains 'calc.exe')🔗 References
- https://github.com/vnotex/vnote/commit/3477469b669708ff547037fda9fc2817870428aa
- https://github.com/vnotex/vnote/security/advisories/GHSA-vhh5-8wcv-68gj
- https://github.com/vnotex/vnote/commit/3477469b669708ff547037fda9fc2817870428aa
- https://github.com/vnotex/vnote/security/advisories/GHSA-vhh5-8wcv-68gj
