CVE-2020-3153 : Security Advisory and Response

A vulnerability in the installer component of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated local attacker to copy user-supplied files to system level directories with system level privileges.

Understanding CVE-2020-3153

What is CVE-2020-3153?

This CVE refers to a vulnerability in Cisco AnyConnect Secure Mobility Client for Windows that enables an attacker to copy files to system directories with elevated privileges.

The Impact of CVE-2020-3153

The vulnerability allows an authenticated local attacker to copy malicious files to system directories, potentially leading to DLL pre-loading, DLL hijacking, and other attacks.

Technical Details of CVE-2020-3153

Vulnerability Description

The flaw arises from incorrect handling of directory paths, enabling attackers to copy files to system directories.

Affected Systems and Versions

Product: Cisco AnyConnect Secure Mobility Client
Vendor: Cisco
Affected Version: Unspecified

Exploitation Mechanism

Attack Complexity: Low
Attack Vector: Local
Privileges Required: Low
Integrity Impact: High
Scope: Changed
The attacker needs valid credentials on the Windows system to exploit the vulnerability.

Mitigation and Prevention

Immediate Steps to Take

Apply vendor-provided patches promptly.
Monitor for any unauthorized system changes.
Restrict user permissions to minimize the impact of potential attacks.

Long-Term Security Practices

Regularly update and patch software to address known vulnerabilities.
Implement the principle of least privilege to limit access rights for users.

Patching and Updates

Cisco has released patches to address this vulnerability.