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How the CVE Works
The vulnerability occurs in DotVVM applications running in Debug mode when using FileResourceLocation. Due to improper path sanitization, an attacker can manipulate file paths via crafted HTTP requests, leading to directory traversal. This allows unauthorized access to sensitive files like appsettings.json, exposing secrets such as database credentials. The flaw stems from insufficient validation of user-supplied input in resource handling, enabling arbitrary file reads within the web app’s accessible filesystem.
DailyCVE Form
Platform: DotVVM
Version: <4.2.10, <4.3.8, <5.0.0-preview03
Vulnerability: Path Traversal
Severity: Critical
Date: 2024-XX-XX
Prediction: Patch expected 2024-Q1
What Undercode Say
curl -X GET "http://target.com/resource/../../appsettings.json"
config.Debug = false; // Mitigation workaround
How Exploit
1. Craft malicious path traversal request.
2. Exfiltrate `appsettings.json` or other files.
3. Extract secrets (e.g., DB credentials).
Protection from this CVE
- Update to patched versions.
- Disable Debug mode.
- Rotate exposed secrets.
Impact
- Unauthorized file access.
- Secret leakage.
- System compromise.
Sources:
Reported By: github.com
Extra Source Hub:
Undercode
