CVE-2024-7007: Positron TRA7005 Auth Bypass Vulnerability

CVE-2024-7007 Overview

CVE-2024-7007 is an authentication bypass vulnerability affecting the Positron Broadcast Signal Processor TRA7005 v1.20. This vulnerability allows an attacker to bypass authentication mechanisms and gain unauthorized access to protected areas of the application. As an industrial control system (ICS) component used in broadcast signal processing, exploitation of this vulnerability could allow attackers to manipulate critical broadcast infrastructure without proper authorization.

Critical Impact

Attackers can bypass authentication controls to access protected administrative functions of the Positron TRA7005 broadcast signal processor, potentially compromising broadcast infrastructure integrity.

Affected Products

• Positron TRA7005 Firmware version 1.20
• Positron TRA7005 Hardware (all versions)
• Positron Broadcast Signal Processor TRA7005 v1

Discovery Timeline

• 2024-07-25 - CVE-2024-7007 published to NVD
• 2024-11-21 - Last updated in NVD database

Technical Details for CVE-2024-7007

Vulnerability Analysis

This vulnerability is classified under CWE-288 (Authentication Bypass Using an Alternate Path or Channel) and CWE-306 (Missing Authentication for Critical Function). The Positron TRA7005 broadcast signal processor fails to properly enforce authentication for certain critical functions, allowing attackers to access protected areas of the application without valid credentials.

The vulnerability exists in firmware version 1.20 and is exploitable over the network without requiring prior authentication or user interaction. Successful exploitation grants attackers high-level access to confidential data within the system, though integrity and availability impacts are limited according to the vulnerability assessment.

Root Cause

The root cause of CVE-2024-7007 stems from inadequate authentication enforcement in the TRA7005 firmware. The application contains alternate paths or channels that can be used to bypass the primary authentication mechanism. Additionally, certain critical functions lack proper authentication checks entirely (CWE-306), allowing unauthenticated users to access functionality that should require authentication.

This type of vulnerability is common in embedded systems and ICS devices where authentication may be implemented inconsistently across different access points or API endpoints.

Attack Vector

The attack vector for CVE-2024-7007 is network-based, requiring no user interaction or prior privileges. An attacker with network access to the vulnerable TRA7005 device can exploit this vulnerability remotely.

The attack pattern involves identifying endpoints or channels within the application that bypass normal authentication flows. Once identified, an attacker can directly access protected administrative functions or sensitive data without providing valid credentials. This could be accomplished through direct requests to unprotected endpoints, manipulation of session parameters, or exploitation of alternate authentication paths.

For technical details on the specific exploitation methodology, refer to the CISA ICS Advisory ICSA-24-207-02.

Detection Methods for CVE-2024-7007

Indicators of Compromise

• Unusual access to administrative functions from unauthenticated sessions
• Unexpected configuration changes to TRA7005 devices without corresponding authenticated user activity
• Network traffic to TRA7005 devices from unauthorized IP addresses or unusual source networks
• Log entries showing successful access to protected resources without prior authentication events

Detection Strategies

• Monitor network traffic to TRA7005 devices for requests to administrative endpoints that lack proper authentication tokens
• Implement network-based intrusion detection rules to identify authentication bypass attempts against broadcast equipment
• Review device access logs for inconsistencies between authentication events and resource access
• Deploy anomaly detection for unusual patterns of access to ICS/broadcast infrastructure components

Monitoring Recommendations

• Enable comprehensive logging on TRA7005 devices and forward logs to a centralized SIEM for analysis
• Implement network segmentation monitoring to detect unauthorized access attempts from untrusted network zones
• Configure alerts for any access to critical TRA7005 functions outside of expected maintenance windows
• Regularly audit network access to broadcast signal processing equipment

How to Mitigate CVE-2024-7007

Immediate Actions Required

• Isolate affected Positron TRA7005 devices from untrusted networks immediately
• Implement network segmentation to restrict access to TRA7005 devices to authorized personnel only
• Enable all available logging on affected devices to monitor for potential exploitation attempts
• Review recent access logs for evidence of unauthorized access or exploitation
• Contact Positron for guidance on firmware updates or mitigations specific to your deployment

Patch Information

Organizations should consult the CISA ICS Advisory ICSA-24-207-02 for the latest vendor patch information and mitigation guidance. Contact Positron directly for firmware updates that address CVE-2024-7007.

Workarounds

• Place TRA7005 devices behind a firewall and restrict network access to only authorized management systems
• Implement a VPN or other secure access solution for remote administration of TRA7005 devices
• Use network access control lists (ACLs) to whitelist only known administrative IP addresses
• Deploy a web application firewall (WAF) or reverse proxy with authentication in front of TRA7005 web interfaces if possible

# Example firewall configuration to restrict TRA7005 access
# Allow only authorized management subnet
iptables -A INPUT -s 10.0.100.0/24 -d TRA7005_IP -p tcp --dport 80 -j ACCEPT
iptables -A INPUT -s 10.0.100.0/24 -d TRA7005_IP -p tcp --dport 443 -j ACCEPT
# Deny all other access
iptables -A INPUT -d TRA7005_IP -p tcp --dport 80 -j DROP
iptables -A INPUT -d TRA7005_IP -p tcp --dport 443 -j DROP