CVE-2024-50307
📋 TL;DR
This vulnerability in Chatwork Desktop Application for Windows allows attackers to execute arbitrary code if users click specially crafted links. Attackers can download and execute malicious files from external websites, potentially compromising the user's device. Only Windows users running Chatwork Desktop Application versions before 2.9.2 are affected.
💻 Affected Systems
- Chatwork Desktop Application
⚠️ 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 attacker gaining full control over the device, data theft, ransomware deployment, and lateral movement within the network.
Likely Case
Malware installation leading to credential theft, data exfiltration, or system disruption for individual users.
If Mitigated
Limited impact with only isolated user systems affected if proper endpoint protection and user awareness training are in place.
🎯 Exploit Status
Exploitation requires user interaction (clicking a link) but is technically simple once the user is tricked.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 2.9.2
Vendor Advisory: https://jvn.jp/en/jp/JVN78335885/
Restart Required: Yes
Instructions:
1. Open Chatwork Desktop Application. 2. Go to Settings > About. 3. Check current version. 4. If below 2.9.2, download and install the latest version from official Chatwork website. 5. Restart the application.
🔧 Temporary Workarounds
Disable automatic execution of downloaded files
windowsConfigure Windows to prompt before opening downloaded files
Use web version temporarily
allSwitch to Chatwork web interface until desktop application is patched
🧯 If You Can't Patch
- Implement application control to block execution of unauthorized files
- Deploy endpoint detection and response (EDR) with file execution monitoring
🔍 How to Verify
Check if Vulnerable:
Open Chatwork Desktop Application, go to Settings > About, check if version is below 2.9.2Check Version:
Not applicable - check through application GUIVerify Fix Applied:
Confirm version shows 2.9.2 or higher in Settings > About📡 Detection & Monitoring
Log Indicators:
- Unexpected file downloads from external sources
- Unusual process execution following link clicks in Chatwork
Network Indicators:
- Outbound connections to unknown domains following Chatwork link clicks
- File downloads from suspicious external sources
SIEM Query:
Process creation events from Chatwork.exe followed by network connections to external domains and file write operations