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Vulnerability of Node.js mixin-deep: privilege escalation via Prototype Pollution

Synthesis of the vulnerability 

An attacker can bypass restrictions via Prototype Pollution of Node.js mixin-deep, in order to escalate his privileges.
Impacted systems: Fedora, Nodejs Modules ~ not comprehensive, RHEL.
Severity of this alert: 2/4.
Creation date: 10/02/2020.
Références of this alert: CVE-2019-10746, FEDORA-2020-4a8f110332, FEDORA-2020-f80e5c0d65, RHSA-2021:0485-01, RHSA-2021:0549-01, VIGILANCE-VUL-31565.

Description of the vulnerability 

An attacker can bypass restrictions via Prototype Pollution of Node.js mixin-deep, in order to escalate his privileges.
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This vulnerability note impacts software or systems such as Fedora, Nodejs Modules ~ not comprehensive, RHEL.

Our Vigil@nce team determined that the severity of this cybersecurity vulnerability is medium.

The trust level is of type confirmed by the editor, with an origin of document.

An attacker with a expert ability can exploit this computer threat note.

Solutions for this threat 

Node.js mixin-deep: versions 1.3.2 and 2.0.1.
Versions 1.3.2 and 2.0.1 are fixed:
  https://www.npmjs.com/package/mixin-deep

Fedora: new nodejs-mixin-deep packages.
New packages are available:
  Fedora 30: nodejs-mixin-deep 1.3.2-1.fc30
  Fedora 31: nodejs-mixin-deep 1.3.2-1.fc31

RHEL 7: new rh-nodejs12-nodejs packages.
New packages are available:
  RHEL 7.0-7.9: rh-nodejs12-nodejs 12.20.1-1.el7

RHEL 8: new nodejs-12 module.
The following module is updated:
  RHEL 8 Module: nodejs:12
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