CVE-2023-27759
📋 TL;DR
This vulnerability in Wondershare Edrawmind allows remote attackers to execute arbitrary commands through a malicious WindowsCodescs.dll file. Attackers can achieve remote code execution on affected systems. Users running vulnerable versions of Edrawmind are at risk.
💻 Affected Systems
- Wondershare Edrawmind
📦 What is this software?
Edrawmind by Wondershare
⚠️ Risk & Real-World Impact
Worst Case
Full system compromise with attacker gaining complete control over the victim's computer, enabling data theft, ransomware deployment, or persistent backdoor installation.
Likely Case
Remote code execution leading to malware installation, credential theft, or lateral movement within the network.
If Mitigated
Limited impact if application runs with minimal privileges and network access is restricted, though local compromise remains possible.
🎯 Exploit Status
Exploitation requires tricking users into opening malicious files or loading the vulnerable DLL through social engineering.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: v10.0.7 or later
Vendor Advisory: https://github.com/liong007/Wondershare/issues/8
Restart Required: Yes
Instructions:
1. Open Wondershare Edrawmind. 2. Navigate to Help > Check for Updates. 3. Follow prompts to install latest version. 4. Restart the application.
🔧 Temporary Workarounds
Restrict DLL loading
windowsConfigure Windows to prevent loading of untrusted DLLs from network locations
Set-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Control\Session Manager" -Name "CWDIllegalInDllSearch" -Value 0x1
Application control
windowsUse Windows Defender Application Control or AppLocker to restrict Edrawmind execution
🧯 If You Can't Patch
- Remove or disable Edrawmind on critical systems
- Implement network segmentation to isolate Edrawmind systems from sensitive resources
🔍 How to Verify
Check if Vulnerable:
Check Edrawmind version in Help > About. If version is 10.0.6 or earlier, system is vulnerable.Check Version:
wmic product where name="Edrawmind" get versionVerify Fix Applied:
Verify version is 10.0.7 or later in Help > About menu.📡 Detection & Monitoring
Log Indicators:
- Process creation events for unexpected executables from Edrawmind process
- Network connections initiated by Edrawmind to suspicious IPs
Network Indicators:
- Outbound connections from Edrawmind to command and control servers
- Unusual DNS queries from systems running Edrawmind
SIEM Query:
source="windows" AND process_name="Edrawmind.exe" AND (event_id=4688 OR event_id=1) AND (parent_process_name!="explorer.exe" OR command_line CONTAINS "powershell" OR command_line CONTAINS "cmd")