Detections
Analytics

Mozilla Firefox ESR < 60.2.2

critical Nessus Plugin ID 275641

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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 60.2.2. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2018-24 advisory.

 - A vulnerability where the JavaScript JIT compiler inlines Array.prototype.push with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process.
 (CVE-2018-12387)

 - A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered.
 (CVE-2018-12386)

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 60.2.2 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2018-24/

Plugin Details

Severity: Critical

ID: 275641

File Name: macos_firefox_60_2_2_esr.nasl

Version: 1.1

Type: local

Agent: macosx

Published: 11/18/2025

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: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.4

Temporal Score: 5

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

CVSS Score Source: CVE-2018-12387

CVSS v3

Risk Factor: Critical

Base Score: 9.1

Temporal Score: 8.2

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

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

Vulnerability Information

CPE: cpe:/a:mozilla:firefox_esr

Required KB Items: installed_sw/Mozilla Firefox ESR

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 10/2/2018

Vulnerability Publication Date: 10/2/2018

Reference Information

CVE: CVE-2018-12386, CVE-2018-12387

IAVA: 2018-A-0309-S