Detections
Analytics

Mozilla Firefox ESR < 115.23

critical Nessus Plugin ID 234931

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Synopsis

A web browser installed on the remote macOS or Mac OS X host is affected by multiple vulnerabilities.

Description

The version of Firefox ESR installed on the remote macOS or Mac OS X host is prior to 115.23. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-30 advisory.

 - A process isolation vulnerability in Firefox stemmed from improper handling of javascript: URIs, which could allow content to execute in the top-level document's process instead of the intended frame, potentially enabling a sandbox escape. (CVE-2025-4083)

 - Mozilla Firefox's update mechanism allowed a medium-integrity user process to interfere with the SYSTEM- level updater by manipulating the file-locking behavior. By injecting code into the user-privileged process, an attacker could bypass intended access controls, allowing SYSTEM-level file operations on paths controlled by a non-privileged user and enabling privilege escalation. (CVE-2025-2817)

 - Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges. This bug only affects Firefox for macOS.
 Other versions of Firefox are unaffected. (CVE-2025-4082)

 - Due to insufficient escaping of the ampersand character in the copy as cURL feature, an attacker could trick a user into using this command, potentially leading to local code execution on the user's system.
 This bug only affects Firefox for Windows. Other versions of Firefox are unaffected. (CVE-2025-4084)

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 ESR version 115.23 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2025-30/

Plugin Details

Severity: Critical

ID: 234931

File Name: macos_firefox_115_23_esr.nasl

Version: 1.5

Type: local

Agent: macosx

Published: 4/29/2025

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: 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-2025-4082

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 7.9

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

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

CVSS Score Source: CVE-2025-2817

Vulnerability Information

CPE: cpe:/a:mozilla:firefox_esr

Required KB Items: installed_sw/Mozilla Firefox ESR

Exploit Ease: No known exploits are available

Patch Publication Date: 4/29/2025

Vulnerability Publication Date: 4/29/2025

Reference Information

CVE: CVE-2025-2817, CVE-2025-4082, CVE-2025-4083, CVE-2025-4084

IAVA: 2025-A-0307-S