CVE-2019-1767 : Vulnerability Insights and Analysis

A weakness has been discovered in Cisco NX-OS Software that could allow a local attacker with administrator privileges to trigger a buffer overflow or engage in command injection, potentially leading to unauthorized commands execution with elevated privileges.

Understanding CVE-2019-1767

This CVE involves a vulnerability in the implementation of a specific CLI command in Cisco NX-OS Software.

What is CVE-2019-1767?

A local attacker with administrator privileges can exploit insufficient validation of arguments in a CLI command to trigger a buffer overflow or command injection.
Successful exploitation could allow the attacker to run unauthorized commands with elevated privileges on the affected device's operating system.

The Impact of CVE-2019-1767

CVSS Score: 6.7 (Medium Severity)
Attack Vector: Local
Privileges Required: High
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High

Technical Details of CVE-2019-1767

This section provides detailed technical information about the vulnerability.

Vulnerability Description

Insufficient validation of arguments in a specific CLI command in Cisco NX-OS Software.
Allows a local attacker with administrator privileges to trigger a buffer overflow or command injection.

Affected Systems and Versions

Affected Product: Cisco NX-OS Software
Vendor: Cisco
Affected Versions: Versions prior to 8.3(1)

Exploitation Mechanism

Attacker supplies malicious input as an argument for the affected CLI command.
Requires valid administrator credentials for successful exploitation.

Mitigation and Prevention

Steps to address and prevent the CVE-2019-1767 vulnerability.

Immediate Steps to Take

Apply vendor-provided patches or updates.
Monitor network traffic for signs of exploitation.
Restrict access to vulnerable systems.

Long-Term Security Practices

Regularly update and patch software and firmware.
Implement the principle of least privilege for user accounts.
Conduct security training and awareness programs for employees.

Patching and Updates

Cisco has released patches to address the vulnerability.
Ensure all affected systems are updated to a version equal to or later than 8.3(1).