CVE-2019-18797 : Vulnerability Insights and Analysis

LibSass 3.6.1 has a vulnerability with uncontrolled recursion in the Sass::Eval::operator()(Sass::Binary_Expression*) function in the eval.cpp file.

Understanding CVE-2019-18797

In this CVE, a specific issue in LibSass 3.6.1 allows for uncontrolled recursion, potentially leading to security risks.

What is CVE-2019-18797?

The vulnerability in the eval.cpp file of LibSass 3.6.1 involves uncontrolled recursion within the Sass::Eval::operator()(Sass::Binary_Expression*) function.

The Impact of CVE-2019-18797

This vulnerability could be exploited by attackers to cause a denial of service (DoS) or potentially execute arbitrary code on the affected system.

Technical Details of CVE-2019-18797

LibSass 3.6.1 vulnerability details and affected systems.

Vulnerability Description

The issue lies in the uncontrolled recursion within the Sass::Eval::operator()(Sass::Binary_Expression*) function in the eval.cpp file of LibSass 3.6.1.

Affected Systems and Versions

Product: Not applicable
Vendor: Not applicable
Version: 3.6.1

Exploitation Mechanism

Attackers can exploit this vulnerability to trigger uncontrolled recursion, potentially leading to a DoS condition or arbitrary code execution.

Mitigation and Prevention

Steps to mitigate and prevent exploitation of CVE-2019-18797.

Immediate Steps to Take

Update LibSass to a patched version that addresses the recursion issue.
Monitor for any unusual activity on the system that could indicate exploitation.

Long-Term Security Practices

Regularly update software and libraries to ensure known vulnerabilities are patched.
Implement proper input validation and error handling in code to prevent similar issues.

Patching and Updates

Ensure that LibSass is regularly updated to the latest version to mitigate known vulnerabilities.