Denial-of-Service in HPE AOS-CX

Executive Summary

This vulnerability in AOS-CX allows an unauthenticated remote attacker to cause a denial-of-service condition by sending specially crafted packets. This disrupts normal operation on affected devices.

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Detection Guidance

Detecting this vulnerability requires monitoring network traffic for unusual patterns targeting AOS-CX devices. Check for repeated malformed packets or sudden spikes in traffic directed at network switches. Use packet capture tools like tcpdump or Wireshark to inspect traffic for anomalies. Example command: tcpdump -i any -n 'host <target_IP> and not port 22' -c 1000 -w capture.pcap

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Impact Analysis

The impact includes disruption of network services on affected devices, leading to potential downtime and loss of connectivity for users and systems relying on those devices.

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Compliance Impact

The vulnerability causes denial-of-service conditions on affected devices, which could disrupt critical services. This may impact compliance with standards requiring availability of systems, such as GDPR's data processing requirements or HIPAA's access controls, by potentially leading to service unavailability.

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Mitigation Strategies

Immediately apply patches or updates provided by HPE for AOS-CX. If patches are unavailable, restrict access to affected devices by blocking suspicious traffic at the firewall. Disable unnecessary services and monitor network traffic closely for signs of exploitation. Consider isolating vulnerable devices from critical network segments.

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