CVE-2019-19470 : What You Need to Know

TinyWall software is affected by a security vulnerability related to .NET deserialization in processing Named Pipe messages, allowing local attackers to escalate privileges to NT AUTHORITY\SYSTEM. The issue impacts all versions up to 2.1.12 and has been resolved in version 2.1.13.

Understanding CVE-2019-19470

This CVE entry highlights a critical security flaw in TinyWall software that could lead to privilege escalation for local attackers.

What is CVE-2019-19470?

The vulnerability arises from insecure usage of .NET deserialization in processing Named Pipe messages within TinyWall software, enabling a local attacker to elevate their privileges to NT AUTHORITY\SYSTEM.

The Impact of CVE-2019-19470

The security issue poses a significant risk as it allows unauthorized users to gain elevated system privileges, potentially leading to further exploitation or system compromise.

Technical Details of CVE-2019-19470

This section delves into the technical aspects of the CVE, providing insights into the vulnerability, affected systems, and exploitation mechanisms.

Vulnerability Description

The vulnerability in TinyWall stems from improper handling of .NET deserialization in processing Named Pipe messages, creating a pathway for privilege escalation for local attackers.

Affected Systems and Versions

TinyWall software versions up to and including 2.1.12 are vulnerable to this exploit.

Exploitation Mechanism

Local attackers can exploit the vulnerability by manipulating the .NET deserialization process in Named Pipe message handling to gain elevated privileges.

Mitigation and Prevention

Protecting systems from CVE-2019-19470 requires immediate actions and long-term security practices.

Immediate Steps to Take

Update TinyWall software to the latest version, 2.1.13, which contains the necessary security patches.

Long-Term Security Practices

Implement the principle of least privilege to restrict user access rights and minimize the impact of potential privilege escalation attacks.
Regularly monitor and audit system logs for any suspicious activities that could indicate unauthorized privilege escalation attempts.

Patching and Updates

Stay vigilant for security updates and patches released by TinyWall to address vulnerabilities and enhance system security.