CVE-2024-55970
📋 TL;DR
This vulnerability allows attackers to perform directory traversal attacks in Syncfusion Essential Studio for ASP.NET MVC's File Manager component. By manipulating request parameters, attackers can access files outside the intended directory. This affects all users of Syncfusion Essential Studio for ASP.NET MVC versions before 27.1.55.
💻 Affected Systems
- Syncfusion Essential Studio for ASP.NET MVC
⚠️ 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 read sensitive system files, configuration files, or application source code, potentially leading to complete system compromise.
Likely Case
Unauthorized file access leading to information disclosure of sensitive application or system data.
If Mitigated
Limited impact with proper file system permissions and input validation in place.
🎯 Exploit Status
Directory traversal vulnerabilities typically require minimal technical skill to exploit once the vulnerability is understood.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 27.1.55
Vendor Advisory: https://ej2.syncfusion.com/aspnetmvc/documentation/release-notes/27.1.55?type=all
Restart Required: Yes
Instructions:
1. Update Syncfusion Essential Studio for ASP.NET MVC to version 27.1.55 or later. 2. Rebuild and redeploy your ASP.NET MVC applications. 3. Restart application servers and web services.
🔧 Temporary Workarounds
Input Validation Filter
allImplement custom input validation to filter directory traversal sequences in File Manager requests.
Implement request filtering middleware that validates and sanitizes file path parameters before processing.
File System Permissions
windowsRestrict file system permissions for the application to limit accessible directories.
Set appropriate file system ACLs to restrict the application to specific directories only.
🧯 If You Can't Patch
- Disable or remove the File Manager component if not essential for application functionality.
- Implement web application firewall (WAF) rules to block directory traversal patterns in requests.
🔍 How to Verify
Check if Vulnerable:
Check the Syncfusion Essential Studio version in your ASP.NET MVC project references. If using version earlier than 27.1.55 and using File Manager component, you are vulnerable.Check Version:
Check the Syncfusion.EJ2.AspNet.Mvc package version in your project's packages.config or .csproj file.Verify Fix Applied:
Verify that Syncfusion Essential Studio version is 27.1.55 or later in your project dependencies and rebuild/redeploy the application.📡 Detection & Monitoring
Log Indicators:
- Unusual file access patterns in application logs
- Requests containing '../' or similar traversal sequences in File Manager endpoints
Network Indicators:
- HTTP requests to File Manager endpoints with suspicious path parameters
SIEM Query:
source="web_server" AND (uri="*/FileManager/*" AND (param="*../*" OR param="*..\\*"))