Out-of-bounds Read Affecting node-sass package, versions <4.11.0


0.0
high

Snyk CVSS

    Attack Complexity Low
    User Interaction Required
    Confidentiality High
    Availability High

    Threat Intelligence

    Exploit Maturity Proof of concept
    EPSS 0.22% (60th percentile)
Expand this section
NVD
8.1 high

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  • Snyk ID SNYK-JS-NODESASS-535501
  • published 25 Nov 2019
  • disclosed 4 Jun 2018
  • credit Unknown

How to fix?

Upgrade node-sass to version 4.11.0 or higher.

Overview

node-sass is a Node.js bindings package for libsass.

Affected versions of this package are vulnerable to Out-of-bounds Read. An issue was discovered in LibSass through 3.5.4. An out-of-bounds read of a memory region was found in the function Sass::Prelexer::skip_over_scopes which could be leveraged by an attacker to disclose information or manipulated to read from unmapped memory causing a denial of service. node-sass is affected by this vulnerability due to its bundled usage of libsass.