CVE-2018-0184 : Exploit Details and Defense Strategies

Cisco IOS XE Software CLI parser vulnerability allows local attackers to gain control over the underlying Linux shell, potentially leading to unauthorized commands with root privileges.

Understanding CVE-2018-0184

This CVE involves a vulnerability in Cisco IOS XE Software that could enable attackers with authenticated access to exploit the CLI parser, gaining root access to the device's Linux shell.

What is CVE-2018-0184?

The vulnerability arises from inadequate sanitization of command arguments, allowing attackers to access internal device data structures and execute unauthorized commands with root privileges.

The Impact of CVE-2018-0184

If successfully exploited, the vulnerability grants attackers root access to the device's Linux shell, enabling them to execute any desired commands with elevated privileges.

Technical Details of CVE-2018-0184

Vulnerability Description

The vulnerability in the CLI parser of Cisco IOS XE Software allows local attackers with authenticated access to manipulate CLI commands, potentially leading to unauthorized root access and command execution.

Affected Systems and Versions

Product: Cisco IOS XE
Version: Cisco IOS XE

Exploitation Mechanism

Attackers need privileged EXEC mode access (privilege level 15) to execute manipulated CLI commands and exploit the vulnerability.

Mitigation and Prevention

Immediate Steps to Take

Apply patches and updates provided by Cisco to address the vulnerability.
Monitor Cisco's security advisories for any further recommendations or mitigations.

Long-Term Security Practices

Implement the principle of least privilege to restrict access levels and prevent unauthorized actions.
Regularly review and update access controls and configurations to enhance security posture.

Patching and Updates

Ensure timely installation of security patches released by Cisco to remediate the vulnerability.