CVE-2020-3433 : Security Advisory and Response

A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to perform a DLL hijacking attack.

Understanding CVE-2020-3433

This CVE involves a security vulnerability in Cisco AnyConnect Secure Mobility Client for Windows that could lead to arbitrary code execution on the affected machine.

What is CVE-2020-3433?

The vulnerability in the IPC channel of Cisco AnyConnect Secure Mobility Client for Windows allows a local attacker with valid credentials to execute a DLL hijacking attack by sending a crafted IPC message to the AnyConnect process.

The Impact of CVE-2020-3433

CVSS Base Score: 7.8 (High Severity)
Attack Vector: Local
Attack Complexity: Low
Privileges Required: Low
Confidentiality Impact: High
Integrity Impact: High
Availability Impact: High
Successful exploitation could allow the attacker to execute arbitrary code on the affected machine with SYSTEM privileges.

Technical Details of CVE-2020-3433

This section provides detailed technical information about the vulnerability.

Vulnerability Description

The vulnerability is a result of insufficient validation of resources loaded by the application at runtime, allowing for DLL hijacking.

Affected Systems and Versions

Affected Product: Cisco AnyConnect Secure Mobility Client
Vendor: Cisco
Affected Version: Not Applicable

Exploitation Mechanism

Attacker needs valid credentials on the Windows system
Crafted IPC message sent to the AnyConnect process

Mitigation and Prevention

Protecting systems from this vulnerability is crucial to prevent potential exploitation.

Immediate Steps to Take

Apply vendor patches and updates promptly
Monitor Cisco's security advisories for any further updates

Long-Term Security Practices

Implement the principle of least privilege to restrict access
Regularly review and update security configurations

Patching and Updates

Ensure all systems running Cisco AnyConnect Secure Mobility Client are updated with the latest patches
Regularly check for security advisories and apply recommended patches