CVE-2018-0092 : Vulnerability Insights and Analysis

A security flaw in the network-operator user role implementation in Cisco NX-OS System Software could allow a local attacker to delete valid user accounts on the affected device.

Understanding CVE-2018-0092

This CVE involves a vulnerability in Cisco NX-OS System Software that could be exploited by an authenticated attacker with the network-operator role.

What is CVE-2018-0092?

The flaw allows a local attacker to delete valid user accounts on the device by exploiting a lack of proper role-based access control (RBAC) checks.

The Impact of CVE-2018-0092

Successful exploitation could compromise the device's integrity by deleting configured user credentials.
The attacker must have valid user credentials granting the network-operator role to leverage this vulnerability.

Technical Details of CVE-2018-0092

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from inadequate RBAC checks for network-operator user actions.

Affected Systems and Versions

Cisco NX-OS System Software is affected, impacting various Cisco products like Nexus 3000 Series Switches and Nexus 9000 Series Switches.

Exploitation Mechanism

An attacker needs authenticated access with network-operator role credentials to exploit the vulnerability.

Mitigation and Prevention

Steps to address and prevent the CVE.

Immediate Steps to Take

Review and restrict network-operator role permissions.
Monitor user account deletions and changes.
Implement strong password policies.

Long-Term Security Practices

Regularly review and update RBAC policies.
Conduct security training for users on best practices.

Patching and Updates

Apply patches and updates provided by Cisco to address the vulnerability.