CVE-2018-19792 : Vulnerability Insights and Analysis

LiteSpeed OpenLiteSpeed before 1.5.0 RC6 allows local users to launch a denial of service attack or potentially exploit other vulnerabilities by creating a symbolic link. This vulnerability is due to mishandling in the LshttpdMain::getServerRootFromExecutablePath function.

Understanding CVE-2018-19792

LiteSpeed OpenLiteSpeed vulnerability enabling local users to execute a denial of service attack or exploit other vulnerabilities.

What is CVE-2018-19792?

The vulnerability in LiteSpeed OpenLiteSpeed allows local users to create a symbolic link, leading to a denial of service attack or potential exploitation of other vulnerabilities.

The Impact of CVE-2018-19792

Local users can launch a denial of service attack (buffer overflow) or exploit other unspecified vulnerabilities.

Technical Details of CVE-2018-19792

LiteSpeed OpenLiteSpeed vulnerability technical details.

Vulnerability Description

The vulnerability allows local users to create a symbolic link, enabling a denial of service attack or potential exploitation of other vulnerabilities due to mishandling in the LshttpdMain::getServerRootFromExecutablePath function.

Affected Systems and Versions

LiteSpeed OpenLiteSpeed versions prior to 1.5.0 RC6.

Exploitation Mechanism

Attack carried out by creating a symbolic link that allows the openlitespeed program to be executed with a lengthy command name containing "../" characters.

Mitigation and Prevention

Steps to mitigate and prevent CVE-2018-19792.

Immediate Steps to Take

Upgrade LiteSpeed OpenLiteSpeed to version 1.5.0 RC6 or later.
Avoid running the software with unnecessary privileges.

Long-Term Security Practices

Regularly monitor and update software for security patches.
Implement the principle of least privilege to limit user access.

Patching and Updates

Apply patches and updates provided by LiteSpeed to address the vulnerability.