CVE-2019-12661 Explained : Impact and Mitigation

A vulnerability in Cisco IOS XE Software allows an authenticated, local attacker to execute arbitrary commands with root privileges by exploiting a CLI command related to the Virtualization Manager (VMAN).

Understanding CVE-2019-12661

This CVE involves a vulnerability in a specific CLI command of Cisco IOS XE Software that could lead to unauthorized command execution with elevated privileges.

What is CVE-2019-12661?

The vulnerability allows an attacker with administrator access to the affected device to input malicious commands, potentially gaining complete control over the system.

The Impact of CVE-2019-12661

CVSS Base Score: 6.7 (Medium Severity)
Attack Vector: Local
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
The attacker could compromise the entire system by executing arbitrary commands with root privileges.

Technical Details of CVE-2019-12661

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability arises from insufficient validation of arguments in a specific VMAN CLI command on the affected device.

Affected Systems and Versions

Product: Cisco IOS XE Software
Vendor: Cisco
Version: Unspecified

Exploitation Mechanism

An authenticated, local attacker with administrator access can exploit the vulnerability by injecting malicious input as a command argument.

Mitigation and Prevention

Protecting systems from CVE-2019-12661 requires immediate actions and long-term security practices.

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement the principle of least privilege to limit access rights.
Conduct security training to educate users on identifying and reporting suspicious activities.
Employ network segmentation to contain potential breaches.
Utilize intrusion detection and prevention systems to enhance security posture.

Patching and Updates

Cisco may release patches or updates to address the vulnerability. Stay informed about security advisories and apply patches as soon as they are available.