CVE-2022-50975: Authentication Bypass Vulnerability

CVE-2022-50975 Overview

CVE-2022-50975 is a session hijacking vulnerability that enables unauthenticated remote attackers to exploit an existing session ID of a logged-in user and gain full access to the affected device when configuration via ethernet is enabled. This vulnerability is classified under CWE-346 (Origin Validation Error), indicating improper validation of the origin of requests or sessions.

Critical Impact

An unauthenticated remote attacker can hijack active sessions to gain complete device control, potentially compromising device integrity, confidentiality, and availability.

Affected Products

• InnoMic devices with ethernet configuration enabled
• Devices running vulnerable firmware versions (see vendor advisory for specific versions)

Discovery Timeline

• 2026-02-02 - CVE-2022-50975 published to NVD
• 2026-02-03 - Last updated in NVD database

Technical Details for CVE-2022-50975

Vulnerability Analysis

This vulnerability stems from inadequate session management and origin validation within the device's web-based configuration interface. When ethernet-based configuration is enabled, the device fails to properly validate whether incoming requests originate from the authenticated user who established the session. This allows an attacker to reuse or predict session identifiers to impersonate legitimate users.

The attack requires user interaction, as the attacker needs to obtain or intercept an active session ID from a user who has already authenticated to the device. Once in possession of a valid session token, the attacker can bypass authentication entirely and execute privileged operations on the device.

Root Cause

The root cause of CVE-2022-50975 is an Origin Validation Error (CWE-346). The device's session management mechanism does not adequately verify that requests bearing a session ID originate from the same source that initially authenticated. This could be due to:

• Missing or insufficient binding of session tokens to client-specific attributes (IP address, user agent, etc.)
• Lack of session token rotation after privilege changes
• Predictable or insufficiently random session ID generation
• Missing anti-CSRF protections for sensitive operations

Attack Vector

The attack is network-based and exploits the ethernet configuration interface. An attacker can execute this attack through the following general approach:

1. Reconnaissance: Identify target devices with ethernet configuration enabled on the network
2. Session Capture: Obtain a valid session ID through network sniffing, social engineering, or other means
3. Session Hijacking: Replay the captured session ID to gain authenticated access to the device
4. Exploitation: Execute privileged operations including configuration changes, firmware modifications, or data exfiltration

The vulnerability requires some form of user interaction (such as the victim being logged in during the attack window), which aligns with the UI:R (User Interaction Required) component of the CVSS vector.

Detection Methods for CVE-2022-50975

Indicators of Compromise

• Unusual administrative sessions originating from unexpected IP addresses or geographic locations
• Multiple concurrent sessions using the same session ID from different source IPs
• Authentication log entries showing session access without corresponding login events
• Configuration changes occurring outside of normal maintenance windows

Detection Strategies

• Implement network monitoring to detect session ID reuse from multiple source addresses
• Deploy intrusion detection rules to identify suspicious session patterns on ethernet configuration ports
• Configure alerting for administrative actions that occur without a preceding authentication event
• Monitor for anomalous traffic patterns targeting device management interfaces

Monitoring Recommendations

• Enable comprehensive logging on all InnoMic devices with ethernet configuration enabled
• Implement real-time alerting for session anomalies and concurrent session access
• Regularly audit session logs for indicators of session hijacking attempts
• Consider deploying network behavior analysis tools to detect abnormal device access patterns

How to Mitigate CVE-2022-50975

Immediate Actions Required

• Disable ethernet-based configuration if not required for operations
• Implement network segmentation to isolate affected devices from untrusted networks
• Restrict access to device management interfaces to authorized IP addresses only
• Force logout of all active sessions and require re-authentication

Patch Information

InnoMic has released a security advisory addressing this vulnerability. Organizations should review the InnoMic CSAF Advisory for specific patch information, affected product versions, and remediation guidance. Apply vendor-provided firmware updates as soon as they become available.

Workarounds

• Disable ethernet configuration interface entirely if remote management is not business-critical
• Implement strict network access controls using firewalls and VLANs to limit exposure
• Deploy additional authentication layers such as VPN requirements for administrative access
• Enable session timeout policies to reduce the window of opportunity for session hijacking

# Example network segmentation using iptables to restrict management access
# Restrict access to device management port (example port 443) to specific admin network
iptables -A INPUT -p tcp --dport 443 -s 10.10.10.0/24 -j ACCEPT
iptables -A INPUT -p tcp --dport 443 -j DROP