Mozilla Firefox < 90.0

critical Nessus Plugin ID 151571

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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 90.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2021-28 advisory.

- If a user had granted a permission to a webpage and saved that grant, any webpage running on the same host
- irrespective of scheme or port - would be granted that permission. This bug only affects Firefox for Android. Other operating systems are unaffected. (CVE-2021-29971)

- A malicious webpage could have triggered a use-after-free, memory corruption, and a potentially exploitable crash. This bug only affected Firefox when accessibility was enabled. (CVE-2021-29970)

- An out of bounds write in ANGLE could have allowed an attacker to corrupt memory leading to a potentially exploitable crash. (CVE-2021-30547)

- A user-after-free vulnerability was found via testing, and traced to an out-of-date Cairo library.
Updating the library resolved the issue, and may have remediated other, unknown security vulnerabilities as well. (CVE-2021-29972)

- Password autofill was enabled without user interaction on insecure websites on Firefox for Android. This was corrected to require user interaction with the page before a user's password would be entered by the browser's autofill functionality. This bug only affects Firefox for Android. Other operating systems are unaffected. (CVE-2021-29973)

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

Solution

Upgrade to Mozilla Firefox version 90.0 or later.

Plugin Details

Severity: Critical

ID: 151571

File Name: mozilla_firefox_90_0.nasl

Version: 1.8

Type: local

Agent: windows

Family: Windows

Published: 7/13/2021

Updated: 11/18/2025

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.9

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

CVSS Score Source: CVE-2021-29971

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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

Temporal Vector: CVSS:3.0/E:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: installed_sw/Mozilla Firefox

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/13/2021

Vulnerability Publication Date: 6/8/2021

Reference Information

CVE: CVE-2021-29970, CVE-2021-29971, CVE-2021-29972, CVE-2021-29973, CVE-2021-29974, CVE-2021-29975, CVE-2021-29976, CVE-2021-29977, CVE-2021-30547

IAVA: 2021-A-0293-S, 2021-A-0309-S

Detections

Analytics