CVE-2018-0226 Explained : Impact and Mitigation
Learn about CVE-2018-0226 affecting Cisco Aironet 1800, 2800, and 3800 Series Access Points. Find out how an attacker could exploit SSH access to gain elevated privileges and steps to prevent unauthorized access.
A security flaw has been identified in the assignment and management of default user accounts for Secure Shell (SSH) access to Cisco Aironet 1800, 2800, and 3800 Series Access Points running Cisco Mobility Express Software.
Understanding CVE-2018-0226
This CVE involves a vulnerability in the default user account configuration for SSH access to Cisco Aironet series access points, potentially allowing an attacker to gain elevated privileges.
What is CVE-2018-0226?
The vulnerability arises from how default user accounts for SSH access are managed in Cisco Mobility Express Software, affecting specific Cisco Aironet access point series.
The Impact of CVE-2018-0226
An authenticated remote attacker could exploit this flaw to obtain administrative privileges on the affected access point, potentially leading to unauthorized access and control.
Technical Details of CVE-2018-0226
This section delves into the specific technical aspects of the CVE.
Vulnerability Description
The vulnerability allows an attacker with valid user credentials to leverage the default SSH user account to gain administrative access to the affected access point.
Affected Systems and Versions
- Aironet 1800 Series Access Points with Cisco Mobility Express Software Releases 8.2.121.0 through 8.5.105.0
- Aironet 2800 Series Access Points with Cisco Mobility Express Software Releases 8.3.102.0 through 8.5.105.0
- Aironet 3800 Series Access Points with Cisco Mobility Express Software Releases 8.3.102.0 through 8.5.105.0
Exploitation Mechanism
The flaw stems from the default SSH user account configuration on the Mobility Express controller, potentially granting unauthorized access to the access point.
Mitigation and Prevention
Steps to address and prevent the exploitation of this vulnerability.
Immediate Steps to Take
- Cisco recommends updating to a fixed software release that addresses the vulnerability.
- Administrators should review and modify default user account settings to enhance security.
Long-Term Security Practices
- Regularly review and update user account configurations and access controls.
- Implement strong password policies and multi-factor authentication to enhance security.
Patching and Updates
- Apply patches and updates provided by Cisco to mitigate the vulnerability and enhance system security.