CVE-2020-3367 : Vulnerability Insights and Analysis

A vulnerability in the log subscription subsystem of Cisco AsyncOS for the Cisco Secure Web Appliance could allow an authenticated, local attacker to perform command injection and elevate privileges to root.

Understanding CVE-2020-3367

This CVE involves a privilege escalation vulnerability in Cisco Secure Web Appliance.

What is CVE-2020-3367?

The vulnerability allows an authenticated attacker to execute arbitrary commands on the underlying operating system by injecting scripting commands.

The Impact of CVE-2020-3367

CVSS Base Score: 5.3 (Medium Severity)
Attack Vector: Local
Privileges Required: Low
Scope: Unchanged
User Interaction: None
Confidentiality Impact: Low
Integrity Impact: Low
Availability Impact: Low

Technical Details of CVE-2020-3367

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability arises from insufficient validation of user-supplied input for the web interface and CLI, allowing attackers to inject commands.

Affected Systems and Versions

Affected Product: Cisco Web Security Appliance (WSA)
Vendor: Cisco
Affected Version: Not Applicable

Exploitation Mechanism

Attackers can exploit this vulnerability by authenticating to the affected device and injecting scripting commands in the log subscription subsystem.

Mitigation and Prevention

Protecting systems from CVE-2020-3367 is crucial for maintaining security.

Immediate Steps to Take

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

Long-Term Security Practices

Regularly update and patch all software and systems.
Implement strong authentication mechanisms and access controls.
Conduct regular security audits and assessments.

Patching and Updates

Ensure that the latest security patches and updates are applied to mitigate the vulnerability effectively.