Unauthenticated Remote Command Execution in Brocade ASCG

Executive Summary

This vulnerability exists in Brocade ASCG versions before 3.5.0. The data collection service has an API endpoint that lacks authentication or authorization checks. Attackers with network access can exploit this to make the appliance establish SSH connections to any host and run arbitrary system commands. This turns the device into an unauthenticated proxy or execution tool.

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Detection Guidance

Detecting this vulnerability requires checking for unauthenticated API access to the Brocade ASCG data collector service. Inspect network traffic for connections to the vulnerable API endpoint on port 443 or 80. Look for SSH connection attempts initiated by the appliance to arbitrary hosts. Check logs for unusual command execution patterns from the data collector service.

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Impact Analysis

An attacker could use this flaw to execute malicious commands on your system through the vulnerable Brocade ASCG appliance. This may lead to unauthorized access, data theft, or further compromise of connected systems. The appliance could also be used to launch attacks on other hosts in your network.

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Compliance Impact

This vulnerability could lead to unauthorized data access or exfiltration, violating GDPR's data protection requirements and HIPAA's security rules. Organizations may face compliance violations, fines, or legal consequences if this flaw is exploited to compromise sensitive data.

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Mitigation Strategies

Immediately upgrade Brocade ASCG to version 3.5.0 or later. Block external network access to the data collector service API endpoint. Disable unnecessary SSH outbound connections from the appliance. Review and restrict network egress rules for the Brocade ASCG device.

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