Detections
Analytics

Mozilla Firefox ESR < 115.24

medium Nessus Plugin ID 237301

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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 115.24. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2025-43 advisory.

 - 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-2025-5265)

 - Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. (CVE-2025-5263)

 - Due to insufficient escaping of the newline 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.
 (CVE-2025-5264)

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 115.24 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2025-43/

Plugin Details

Severity: Medium

ID: 237301

File Name: macos_firefox_115_24_esr.nasl

Version: 1.2

Type: local

Agent: macosx

Published: 5/27/2025

Updated: 5/27/2025

Supported Sensors: Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2025-5263

CVSS v3

Risk Factor: Medium

Base Score: 4.8

Temporal Score: 4.2

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

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

CVSS Score Source: CVE-2025-5265

Vulnerability Information

CPE: cpe:/a:mozilla:firefox_esr

Required KB Items: MacOSX/Firefox/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 5/27/2025

Vulnerability Publication Date: 5/27/2025

Reference Information

CVE: CVE-2025-5263, CVE-2025-5264, CVE-2025-5265