Mozilla Firefox ESR < 102.6

critical Nessus Plugin ID 168657


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


The version of Firefox ESR installed on the remote Windows host is prior to 102.6. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2022-52 advisory.

- A missing check related to tex units could have led to a use-after-free and potentially exploitable crash.

- An attacker who compromised a content process could have partially escaped the sandbox to read arbitrary files via clipboard-related IPC messages. This bug only affects Firefox for Linux. Other operating systems are unaffected. (CVE-2022-46872)

- An optimization in WebGL was incorrect in some cases, and could have led to memory corruption and a potentially exploitable crash. (CVE-2022-46881)

- A file with a long filename could have had its filename truncated to remove the valid extension, leaving a malicious extension in its place. This could potentially led to user confusion and the execution of malicious code. (CVE-2022-46874)

- The executable file warning was not presented when downloading .atloc and .ftploc files, which can run commands on a user's computer. Note: This issue only affected Mac OS operating systems. Other operating systems are unaffected. (CVE-2022-46875)

- A use-after-free in WebGL extensions could have led to a potentially exploitable crash. (CVE-2022-46882)

- Mozilla developers Randell Jesup, Valentin Gosu, Olli Pettay, and the Mozilla Fuzzing Team reported memory safety bugs present in Firefox 107 and Firefox ESR 102.5. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. (CVE-2022-46878)

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


Upgrade to Mozilla Firefox ESR version 102.6 or later.

See Also

Plugin Details

Severity: Critical

ID: 168657

File Name: mozilla_firefox_102_6_esr.nasl

Version: 1.7

Type: local

Agent: windows

Family: Windows

Published: 12/13/2022

Updated: 1/26/2023

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

Risk Information


Risk Factor: Medium

Score: 6.7


Risk Factor: Critical

Base Score: 10

Temporal Score: 7.4

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

CVSS Score Source: CVE-2022-46882


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:/a:mozilla:firefox_esr

Required KB Items: Mozilla/Firefox/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 12/13/2022

Vulnerability Publication Date: 12/13/2022

Reference Information

CVE: CVE-2022-46872, CVE-2022-46874, CVE-2022-46875, CVE-2022-46878, CVE-2022-46880, CVE-2022-46881, CVE-2022-46882

IAVA: 2022-A-0517-S, 2023-A-0009-S