CVE-2017-12301 Explained : Impact and Mitigation

A vulnerability in Cisco NX-OS Software's Python scripting subsystem allows a local attacker to bypass the Python parser, gaining unauthorized control over the device's operating system.

Understanding CVE-2017-12301

This CVE involves a flaw in Cisco NX-OS Software that could lead to unauthorized access and control of the underlying operating system.

What is CVE-2017-12301?

The vulnerability arises from inadequate sanitization of user-provided parameters in certain Python functions within the affected device's scripting sandbox. This flaw enables an attacker with local access and administrative or Python execution privileges to execute arbitrary commands on the device's operating system.

The Impact of CVE-2017-12301

An attacker can escape the scripting sandbox and run unauthorized commands on the device's operating system.
Successful exploitation requires local access and specific privileges, limiting its potential impact.

Technical Details of CVE-2017-12301

This section provides detailed technical insights into the vulnerability.

Vulnerability Description

The flaw allows a local attacker to bypass the Python parser and gain unauthorized control over the device's operating system.

Affected Systems and Versions

Cisco products running Cisco NX-OS Software are affected, including various switches and fabric extenders.

Exploitation Mechanism

Attackers exploit the insufficient sanitization of user-supplied parameters in Python functions to execute unauthorized commands.

Mitigation and Prevention

Protecting systems from CVE-2017-12301 requires immediate actions and long-term security practices.

Immediate Steps to Take

Apply vendor-supplied patches promptly.
Restrict access to vulnerable systems.
Monitor for any unauthorized system access.

Long-Term Security Practices

Regularly update and patch software to address vulnerabilities.
Implement the principle of least privilege to limit user access.
Conduct security training to educate users on potential threats.

Patching and Updates

Cisco has released patches addressing this vulnerability. Ensure timely installation to mitigate the risk of exploitation.