CVE-2018-20190 : What You Need to Know

LibSass version 3.5.5 contains a vulnerability in the

eval.cpp

file, leading to a NULL Pointer Dereference issue that can result in a Denial of Service attack.

Understanding CVE-2018-20190

LibSass 3.5.5 vulnerability with potential Denial of Service impact.

What is CVE-2018-20190?

In LibSass 3.5.5, a NULL Pointer Dereference in the function Sass::Eval::operator()(Sass::Supports_Operator*) in eval.cpp may cause a Denial of Service (application crash) via a crafted sass input file.

The Impact of CVE-2018-20190

The vulnerability can lead to application crashes and Denial of Service attacks if exploited by a malicious actor.

Technical Details of CVE-2018-20190

Details on the vulnerability and affected systems.

Vulnerability Description

LibSass version 3.5.5 vulnerability in the

eval.cpp

file leading to a NULL Pointer Dereference issue.

Affected Systems and Versions

Product: n/a
Vendor: n/a
Version: n/a

Exploitation Mechanism

The vulnerability can be exploited by crafting a malicious sass input file to trigger the NULL Pointer Dereference.

Mitigation and Prevention

Steps to mitigate the CVE-2018-20190 vulnerability.

Immediate Steps to Take

Update LibSass to a patched version.
Monitor for any unusual application crashes.

Long-Term Security Practices

Regularly update software and libraries to patched versions.
Implement input validation mechanisms to prevent malicious input.

Patching and Updates

Ensure timely application of security patches and updates to prevent exploitation of known vulnerabilities.