CVE-2020-3602 : Vulnerability Insights and Analysis

A vulnerability in the CLI of Cisco StarOS operating system for Cisco ASR 5000 Series Routers could allow an authenticated, local attacker to elevate privileges on an affected device.

Understanding CVE-2020-3602

This CVE involves a privilege escalation vulnerability in Cisco StarOS operating system for ASR 5000 Series Routers.

What is CVE-2020-3602?

The vulnerability arises from insufficient input validation of CLI commands, enabling a local attacker to execute arbitrary code with root user privileges.

The Impact of CVE-2020-3602

CVSS Base Score: 6.3 (Medium Severity)
Attack Vector: Local
Attack Complexity: Low
Privileges Required: High
Availability Impact: High
Integrity Impact: High
Confidentiality Impact: Low
Scope: Unchanged
User Interaction: None

Technical Details of CVE-2020-3602

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability allows an authenticated attacker to send crafted commands to the CLI, leading to privilege escalation.

Affected Systems and Versions

Affected Product: Cisco ASR 5000 Series Software
Vendor: Cisco
Affected Version: Not applicable

Exploitation Mechanism

To exploit this vulnerability, the attacker needs valid credentials on the affected device and knowledge of the password for the cli test-commands command.

Mitigation and Prevention

Protecting systems from CVE-2020-3602 is crucial to maintaining security.

Immediate Steps to Take

Apply vendor-provided patches or updates promptly.
Monitor Cisco's security advisories for any new information.
Restrict access to the CLI to authorized personnel only.

Long-Term Security Practices

Implement strong password policies and regular credential updates.
Conduct regular security audits and penetration testing.
Educate users on safe CLI practices and potential security risks.

Patching and Updates

Regularly check for and apply security patches and updates provided by Cisco to address this vulnerability.