Command Injection in Network-AI ClaudeHookBridge

Executive Summary

This vulnerability exists in Network-AI's ClaudeHookBridge versions before 5.15.1. The system truncates Bash command fields to 500 characters before checking deny patterns, but the underlying Claude Code executes the full untruncated command. Attackers can place malicious content beyond 500 characters to bypass deny lists and execute arbitrary commands.

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Detection Guidance

Check ClaudeHookBridge version with command: network-ai --version. Inspect logs for commands exceeding 500 characters in Bash fields. Monitor for unexpected command executions bypassing deny lists.

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Impact Analysis

Attackers could exploit this to bypass security controls and execute unauthorized commands on affected systems. This could lead to data breaches, system compromise, or unauthorized access to sensitive information. The lack of audit trail for executed commands increases the risk of undetected attacks.

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Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements and HIPAA's security rules for protected health information. Organizations using affected versions may fail compliance audits due to inadequate command execution controls.

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Mitigation Strategies

Upgrade ClaudeHookBridge to version 5.15.1 or later. Configure deny-patterns to evaluate full command strings instead of truncated versions. Implement network monitoring for suspicious command patterns.

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