Python Sandbox Escape in Cisco NX-OS

Executive Summary

This vulnerability in Cisco NX-OS Software's Python interpreter allows an authenticated local attacker with low privileges to escape the Python sandbox and gain unauthorized access to the underlying operating system. It is caused by insufficient validation of user-supplied input, enabling manipulation of specific Python interpreter functions to execute arbitrary commands.

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Detection Guidance

Detecting this vulnerability requires checking if your Cisco NX-OS device is running a vulnerable version of the software. Use the command 'show version' to identify the current NX-OS version. Compare the output with Cisco's advisory to determine if your system is affected. Additionally, monitor for unauthorized Python interpreter access or suspicious command execution in system logs.

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Impact Analysis

An attacker could exploit this to run unauthorized commands on your device with the privileges of the authenticated user. This could lead to data theft, system compromise, or further network infiltration if the attacker gains elevated access.

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Compliance Impact

This vulnerability could lead to unauthorized access to the underlying operating system, potentially compromising sensitive data. This may violate compliance requirements under GDPR or HIPAA if the affected Cisco NX-OS devices handle personal or health information.

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Mitigation Strategies

Apply the latest Cisco NX-OS Software patch or update from Cisco to address the Python sandbox validation issue. Restrict user privileges to minimize potential impact if exploitation occurs.

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