Mozilla Firefox ESR < 60.9

critical Nessus Plugin ID 128530

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Synopsis

A web browser installed on the remote Windows host is affected by multiple vulnerabilities.

Description

The version of Firefox ESR installed on the remote Windows host is prior to 60.9. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2019-27 advisory.

- Given a compromised sandboxed content process due to a separate vulnerability, it is possible to escape that sandbox by loading <code>accounts.firefox.com</code> in that process and forcing a log-in to a malicious Firefox Sync account. Preference settings that disable the sandbox are then synchronized to the local machine and the compromised browser would restart without the sandbox if a crash is triggered.
(CVE-2019-9812)

- It is possible to delete an IndexedDB key value and subsequently try to extract it during conversion. This results in a use-after-free and a potentially exploitable crash. (CVE-2019-11752)

- A use-after-free vulnerability can occur while manipulating video elements if the body is freed while still in use. This results in a potentially exploitable crash. (CVE-2019-11746)

- Some HTML elements, such as <code><title></code> and <code><textarea></code>, can contain literal angle brackets without treating them as markup. It is possible to pass a literal closing tag to <code>.innerHTML</code> on these elements, and subsequent content after that will be parsed as if it were outside the tag. This can lead to XSS if a site does not filter user input as strictly for these elements as it does for other elements. (CVE-2019-11744)

- A same-origin policy violation occurs allowing the theft of cross-origin images through a combination of SVG filters and a <code><canvas></code> element due to an error in how same-origin policy is applied to cached image content. The resulting same-origin policy violation could allow for data theft.
(CVE-2019-11742)

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 60.9 or later.

Plugin Details

Severity: Critical

ID: 128530

File Name: mozilla_firefox_60_9_esr.nasl

Version: 1.9

Type: local

Agent: windows

Family: Windows

Published: 9/5/2019

Updated: 11/18/2025

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.1

CVSS v2

Risk Factor: High

Base Score: 9.3

Temporal Score: 7.3

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

CVSS Score Source: CVE-2019-11752

CVSS v3

Risk Factor: Critical

Base Score: 9.3

Temporal Score: 8.4

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

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

CVSS Score Source: CVE-2019-9812

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: 9/3/2019

Vulnerability Publication Date: 9/3/2019

Reference Information

CVE: CVE-2019-11740, CVE-2019-11742, CVE-2019-11743, CVE-2019-11744, CVE-2019-11746, CVE-2019-11752, CVE-2019-11753, CVE-2019-9812

MFSA: 2019-27

Detections

Analytics