Mozilla Firefox < 74.0.1

high Nessus Plugin ID 135202

Synopsis

A web browser installed on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of Firefox installed on the remote Windows host is prior to 74.0.1. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-11 advisory.

- Under certain conditions, when running the nsDocShell destructor, a race condition can cause a use-after-free.
We are aware of targeted attacks in the wild abusing this flaw. (CVE-2020-6819)

- Under certain conditions, when handling a ReadableStream, a race condition can cause a use-after- free. We are aware of targeted attacks in the wild abusing this flaw. (CVE-2020-6820)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

Solution

Upgrade to Mozilla Firefox version 74.0.1 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2020-11/

Plugin Details

Severity: High

ID: 135202

File Name: mozilla_firefox_74_0_1.nasl

Version: 1.8

Type: local

Agent: windows

Family: Windows

Published: 4/6/2020

Updated: 1/24/2022

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus Agent

Risk Information

CVSS Score Source: CVE-2020-6820

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.9

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: E:H/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.1

Temporal Score: 7.7

Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: E:H/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: Mozilla/Firefox/Version

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/3/2020

Vulnerability Publication Date: 4/3/2020

CISA Known Exploited Dates: 5/3/2022

Reference Information

CVE: CVE-2020-6819, CVE-2020-6820

MFSA: 2020-11

IAVA: 2020-A-0128-S