Detections
Analytics

Mozilla Firefox < 67.0

critical Nessus Plugin ID 125360

Language:

Synopsis

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

Description

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 67.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2019-13 advisory.

 - A use-after-free vulnerability can occur in the chrome event handler when it is freed while still in use.
 This results in a potentially exploitable crash. (CVE-2019-9820)

 - If hyperthreading is not disabled, a timing attack vulnerability exists, similar to previous Spectre attacks. Apple has shipped macOS 10.14.5 with an option to disable hyperthreading in applications running untrusted code in a thread through a new sysctl. Firefox now makes use of it on the main thread and any worker threads. Note: users need to update to macOS 10.14.5 in order to take advantage of this change.
 (CVE-2019-9815)

 - A possible vulnerability exists where type confusion can occur when manipulating JavaScript objects in object groups, allowing for the bypassing of security checks within these groups. Note: this vulnerability has only been demonstrated with <code>UnboxedObjects</code>, which are disabled by default on all supported releases. (CVE-2019-9816)

 - Images from a different domain can be read using a canvas object in some circumstances. This could be used to steal image data from a different site in violation of same-origin policy. (CVE-2019-9817)

 - A race condition is present in the crash generation server used to generate data for the crash reporter.
 This issue can lead to a use-after-free in the main process, resulting in a potentially exploitable crash and a sandbox escape. Note: this vulnerability only affects Windows. Other operating systems are unaffected. (CVE-2019-9818)

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 version 67.0 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2019-13/

Plugin Details

Severity: Critical

ID: 125360

File Name: macos_firefox_67_0.nasl

Version: 1.7

Type: local

Agent: macosx

Published: 5/23/2019

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: High

Base Score: 7.5

Temporal Score: 5.9

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

CVSS Score Source: CVE-2019-9820

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: installed_sw/Mozilla Firefox

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 5/21/2019

Vulnerability Publication Date: 2/4/2019

Reference Information

CVE: CVE-2019-11691, CVE-2019-11692, CVE-2019-11693, CVE-2019-11694, CVE-2019-11695, CVE-2019-11696, CVE-2019-11697, CVE-2019-11698, CVE-2019-11699, CVE-2019-11700, CVE-2019-11701, CVE-2019-7317, CVE-2019-9800, CVE-2019-9814, CVE-2019-9815, CVE-2019-9816, CVE-2019-9817, CVE-2019-9818, CVE-2019-9819, CVE-2019-9820, CVE-2019-9821

BID: 108418, 108421, 108098

MFSA: 2019-13