CVE-2019-6283: Medium severity libsass vulnerability

Published Jan 14, 2019
·
Updated

In LibSass 3.5.5, a heap-based buffer over-read exists in Sass::Prelexer::parenthesescope in prelexer.hpp.

Other sources

LibSass is vulnerable to a denial of service, caused by a heap-based buffer over-read in Sass::Prelexer::parenthesescope in prelexer.hpp. By persuading a victim to open a specially-crafted file, a remote attacker could exploit this vulnerability to cause the application to crash.

— IBM

Affected Software

7 affected components
Sass-lang Libsass=3.5.5
IBM Data Virtualization on Cloud Pak for Data<=3.0
IBM Watson Query on Cloud Pak for Data<=2.2
IBM Watson Query on Cloud Pak for Data<=2.1
IBM Watson Query on Cloud Pak for Data<=2.0
IBM Data Virtualization on Cloud Pak for Data<=1.8
IBM Data Virtualization on Cloud Pak for Data<=1.7

Event History

Jan 14, 2019
CVE Published
via MITRE·10:00 PM
Data Sourced
via MITRE·10:00 PM
Description
Aug 15, 2025
Data Sourced
via IBM·03:29 PM
DescriptionAffected Software

Parent advisories

This vulnerability appears in the following advisories.

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Frequently Asked Questions

1

What is CVE-2019-6283?

CVE-2019-6283 is a vulnerability in LibSass 3.5.5 that allows a heap-based buffer over-read.

2

What is the severity of CVE-2019-6283?

The severity of CVE-2019-6283 is medium (6.5).

3

How does CVE-2019-6283 affect LibSass?

CVE-2019-6283 affects LibSass version 3.5.5.

4

How can I fix CVE-2019-6283?

To fix CVE-2019-6283, update LibSass to a version that is not affected by the vulnerability.

5

What is the CVE ID for LibSass's heap-based buffer over-read vulnerability?

The CVE ID for LibSass's heap-based buffer over-read vulnerability is CVE-2019-6283.

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CVE-2019-6283 - Medium severity libsass vulnerability - SecAlerts