CVE-2022-50950: Webile Path Traversal Vulnerability

CVE-2022-50950 Overview

CVE-2022-50950 is a directory traversal vulnerability (CWE-22) affecting Webile version 1.0.1, a mobile file transfer application. This vulnerability allows remote attackers to manipulate file system paths without authentication, enabling access to sensitive system directories and potentially compromising the mobile device's local file system.

Critical Impact

Remote attackers can exploit path manipulation to traverse directories outside the intended file sharing scope, potentially accessing sensitive data stored on the mobile device including private files, application data, and system configurations.

Affected Products

• Webile 1.0.1

Discovery Timeline

• 2026-02-01 - CVE-2022-50950 published to NVD
• 2026-02-03 - Last updated in NVD database

Technical Details for CVE-2022-50950

Vulnerability Analysis

This directory traversal vulnerability exists in the Webile mobile application's web-based file transfer interface. The application fails to properly sanitize user-supplied input when processing file path requests, allowing attackers to use path traversal sequences (such as ../) to navigate outside the intended directory structure.

The vulnerability is exploitable over the network with low attack complexity and requires low privileges. An attacker who successfully exploits this flaw can achieve high confidentiality impact by reading arbitrary files on the device's file system. The attack requires no user interaction, making it particularly dangerous when the application's web interface is exposed on a shared network.

Root Cause

The root cause of this vulnerability lies in insufficient input validation within the Webile application's file handling routines. When the application receives file path requests through its web interface, it fails to properly sanitize and normalize the path components before using them to access the file system. This allows malicious path traversal sequences to be processed, enabling directory escape attacks.

Attack Vector

The attack is conducted over the network against the Webile application's web interface. An attacker on the same network can craft HTTP requests containing directory traversal sequences (e.g., ../../../etc/passwd or similar patterns) to access files outside the designated file sharing directory.

The vulnerability manifests in the web application's file request handling mechanism. When a user accesses the Webile file transfer interface, the application serves files based on user-provided paths. Without proper path canonicalization and validation, attackers can navigate to arbitrary locations on the device's file system. For detailed technical analysis, see the Vulnerability Lab Report #2320.

Detection Methods for CVE-2022-50950

Indicators of Compromise

• HTTP requests to the Webile web interface containing path traversal patterns such as ../, ..%2f, or URL-encoded variants
• Unusual file access attempts targeting system directories like /etc/, /data/, or application private storage paths
• Requests for files outside the normal file sharing directory structure

Detection Strategies

• Monitor network traffic for HTTP requests to Webile containing directory traversal sequences in file path parameters
• Implement web application firewall (WAF) rules to detect and block common path traversal patterns
• Review Webile access logs for suspicious file access patterns indicating attempted directory escape

Monitoring Recommendations

• Enable verbose logging on the Webile application if available to track file access attempts
• Monitor mobile device network connections for unexpected file transfer activity
• Set up alerts for any access attempts to sensitive system directories through the application's interface

How to Mitigate CVE-2022-50950

Immediate Actions Required

• Discontinue use of Webile 1.0.1 until a patched version is available
• If the application must be used, restrict access to the Webile web interface to trusted networks only
• Implement network-level controls to limit which devices can connect to the Webile service
• Consider alternative file transfer solutions with proper input validation

Patch Information

No vendor patch information is currently available. Organizations should monitor the Google Play App Information page for updates. Additional technical details can be found in the VulnCheck Advisory on Webile.

Workarounds

• Disable the Webile web interface when not actively transferring files
• Use network segmentation to isolate devices running Webile from untrusted networks
• Employ a VPN or firewall rules to restrict which IP addresses can access the Webile service
• Consider using mobile device management (MDM) solutions to block or restrict the application

# Example: Block Webile network traffic at the firewall level
# Identify the port used by Webile (commonly 8080 or similar)
# Add firewall rule to restrict access to trusted IPs only
iptables -A INPUT -p tcp --dport 8080 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 8080 -j DROP