Mozilla Firefox < 82.0

critical Nessus Plugin ID 141571

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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 82.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2020-45 advisory.

- Crossbeam is a set of tools for concurrent programming. In crossbeam-channel before version 0.4.4, the bounded channel incorrectly assumes that `Vec::from_iter` has allocated capacity that same as the number of iterator elements. `Vec::from_iter` does not actually guarantee that and may allocate extra memory. The destructor of the `bounded` channel reconstructs `Vec` from the raw pointer based on the incorrect assumes described above. This is unsound and causing deallocation with the incorrect capacity when `Vec::from_iter` has allocated different sizes with the number of iterator elements. This has been fixed in crossbeam-channel 0.4.4. (CVE-2020-15254)

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 82.0 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2020-45/

Plugin Details

Severity: Critical

ID: 141571

File Name: mozilla_firefox_82_0.nasl

Version: 1.6

Type: local

Agent: windows

Family: Windows

Published: 10/20/2020

Updated: 11/13/2020

Dependencies: mozilla_org_installed.nasl

Risk Information

CVSS Score Source: CVE-2020-15684

VPR

Risk Factor: High

Score: 7.4

CVSS v2

Risk Factor: High

Base Score: 7.5

Temporal Score: 5.5

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Required KB Items: Mozilla/Firefox/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 10/20/2020

Vulnerability Publication Date: 10/16/2020

Reference Information

CVE: CVE-2020-15969, CVE-2020-15254, CVE-2020-15683, CVE-2020-15680, CVE-2020-15681, CVE-2020-15682, CVE-2020-15684

MFSA: 2020-45

IAVA: 2020-A-0472-S