CVE-2019-6283 Memory corruption in n/a

Medium 6.5 Published Updated

A heap-based buffer over-read in LibSass allows attackers to cause denial of service or disclose sensitive memory information.

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-2019-6283?

CVE-2019-6283 is a medium-severity memory corruption vulnerability in n/a, published on 14 Jan 2019. 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 heap-based buffer over-read exists in Sass::Prelexer::parenthese_scope in prelexer.hpp.

Weakness: CWE-125

Which versions are affected by CVE-2019-6283?

It affects 1 product.

Products include Sass-Lang Libsass.

How do I fix CVE-2019-6283?

Upgrade to a fixed version.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2019-6283 being exploited?

There is no known exploitation of CVE-2019-6283 in the wild and no public exploit code.

Sources

Also known as DEBIAN-CVE-2019-6283, GHSA-wcgf-wpvr-w7fm, JLSEC-2026-508, UBUNTU-CVE-2019-6283.

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