CVE-2019-25333: Bullwark JAWS Path Traversal Vulnerability

CVE-2019-25333 Overview

Bullwark Momentum Series JAWS 1.0 contains a directory traversal vulnerability that allows unauthenticated attackers to access system files by manipulating HTTP request paths. Attackers can exploit the vulnerability by sending crafted GET requests with multiple ../ sequences to read sensitive files like /etc/passwd outside the web root directory. This vulnerability falls under CWE-22 (Improper Limitation of a Pathname to a Restricted Directory).

Critical Impact

Unauthenticated remote attackers can read arbitrary system files, potentially exposing sensitive configuration data, credentials, and other critical information stored on affected Bullwark surveillance devices.

Affected Products

• Bullwark Momentum Series JAWS 1.0
• Bullwark Momentum Series surveillance devices running vulnerable firmware

Discovery Timeline

• 2026-02-12 - CVE CVE-2019-25333 published to NVD
• 2026-02-12 - Last updated in NVD database

Technical Details for CVE-2019-25333

Vulnerability Analysis

This directory traversal vulnerability exists in the web server component of Bullwark Momentum Series JAWS devices. The web server fails to properly sanitize user-supplied input in HTTP request paths, allowing attackers to escape the intended web root directory and access arbitrary files on the underlying system. The vulnerability is particularly severe because it requires no authentication, enabling any network-adjacent or internet-exposed attacker to exploit it.

The attack is conducted via the network with low complexity and requires no privileges or user interaction. Successful exploitation results in unauthorized disclosure of confidential information stored on the device, including system configuration files, user credentials, and potentially sensitive surveillance data.

Root Cause

The root cause of this vulnerability is improper input validation in the web server's file path handling logic. The application fails to adequately sanitize path traversal sequences (../) from HTTP request paths before using them to access files on the filesystem. This allows attackers to traverse outside the designated web root directory by including multiple ../ sequences in their requests.

Attack Vector

The attack vector is network-based, requiring the attacker to have network access to the vulnerable device's web interface. The attacker crafts malicious HTTP GET requests containing directory traversal sequences to navigate up the directory tree and access files outside the web root. For example, an attacker could target sensitive system files like /etc/passwd, /etc/shadow, or device-specific configuration files containing credentials.

The exploitation technique involves sending crafted HTTP requests with path traversal sequences. Technical details and proof-of-concept examples are available in the Exploit-DB #47773 entry and the VulnCheck Advisory for Bullwark.

Detection Methods for CVE-2019-25333

Indicators of Compromise

• HTTP access logs containing requests with multiple ../ sequences or encoded variants like %2e%2e%2f
• Unusual GET requests targeting system paths such as /etc/passwd, /etc/shadow, or configuration files
• Access attempts to files outside the normal web application directory structure
• Requests containing path traversal patterns combined with sensitive file names

Detection Strategies

• Deploy web application firewall (WAF) rules to detect and block requests containing path traversal sequences
• Implement intrusion detection system (IDS) signatures for directory traversal attack patterns
• Monitor HTTP request logs for anomalous path patterns that include ../ or URL-encoded equivalents
• Configure network security monitoring to alert on access attempts to sensitive system file paths

Monitoring Recommendations

• Enable detailed logging on all Bullwark Momentum Series devices and forward logs to a centralized SIEM
• Create alerts for HTTP requests containing path traversal indicators targeting device web interfaces
• Monitor for reconnaissance activity such as repeated requests testing different path depths
• Implement file integrity monitoring on critical system files to detect unauthorized access

How to Mitigate CVE-2019-25333

Immediate Actions Required

• Isolate affected Bullwark Momentum Series JAWS devices from direct internet exposure
• Implement network segmentation to restrict access to device management interfaces
• Deploy a reverse proxy or WAF in front of vulnerable devices to filter malicious requests
• Review access logs for evidence of prior exploitation attempts

Patch Information

No vendor patch information is currently available for this vulnerability. Bullwark's website has been archived, suggesting the vendor may no longer be actively supporting this product line. Organizations should consult the Archived Bullwark Website and the VulnCheck Advisory for Bullwark for any available updates.

Workarounds

• Place affected devices behind a firewall and restrict access to trusted IP addresses only
• Implement a reverse proxy that sanitizes and validates all incoming requests before forwarding to the device
• Consider replacing end-of-life Bullwark devices with actively supported surveillance equipment
• If internet exposure is required, use VPN access rather than direct exposure of the web interface

# Example: Block path traversal attempts using iptables string matching
iptables -A INPUT -p tcp --dport 80 -m string --string "../" --algo bm -j DROP
iptables -A INPUT -p tcp --dport 443 -m string --string "../" --algo bm -j DROP

# Example: Restrict access to management interface to trusted networks
iptables -A INPUT -p tcp --dport 80 -s 192.168.1.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 80 -j DROP