Mozilla Firefox ESR < 115.23

high Nessus Plugin ID 234930

Synopsis

A web browser installed on the remote Windows host is affected by a vulnerability.

Description

The version of Firefox ESR installed on the remote Windows host is prior to 115.23. It is, therefore, affected by a vulnerability as referenced in the mfsa2025-30 advisory.

- 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)

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 ESR version 115.23 or later.

Plugin Details

Severity: High

ID: 234930

File Name: mozilla_firefox_115_23_esr.nasl

Version: 1.1

Type: local

Agent: windows

Family: Windows

Published: 4/29/2025

Updated: 4/29/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

CVSS v2

Risk Factor: Medium

Base Score: 6.5

Temporal Score: 4.8

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

CVSS Score Source: CVE-2025-2817

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/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: 4/29/2025

Vulnerability Publication Date: 4/29/2025

Reference Information

CVE: CVE-2025-2817

Detections

Analytics