CVE-2018-19827 Use after free in n/a

High 8.8 Published 3 Dec 2018 Updated 5 Aug 2024

A use-after-free flaw in LibSass allows attackers to cause a denial of service via application crash.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2018-19827?

CVE-2018-19827 is a high-severity use after free vulnerability in n/a, published on 3 Dec 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

Official description

In LibSass 3.5.5, a use-after-free vulnerability exists in the SharedPtr class in SharedPtr.cpp (or SharedPtr.hpp) that may cause a denial of service (application crash) or possibly have unspecified other impact.

Weakness: CWE-416

Which versions are affected by CVE-2018-19827?

It affects 1 product.

Products include Sass-Lang Libsass.

How do I fix CVE-2018-19827?

Upgrade to a fixed version.

Upgrade to the fixed version. These bugs are found with fuzzing and sanitisers and avoided by memory-safe languages. More about Use after free.

Is CVE-2018-19827 being exploited?

There is no known exploitation of CVE-2018-19827 in the wild and no public exploit code.

Sources

Also known as AZL-70997, DEBIAN-CVE-2018-19827, GHSA-69g9-qc4v-m973, JLSEC-2026-502, UBUNTU-CVE-2018-19827.