Mozilla Firefox ESR 45.x < 45.7 Multiple Vulnerabilities (macOS)

High Nessus Plugin ID 96773


The remote macOS or Mac OS X host contains a web browser that is affected by multiple vulnerabilities.


The version of Mozilla Firefox ESR installed on the remote macOS or Mac OS X host is 45.x prior to 45.7. It is, therefore, affected by the following vulnerabilities :

- Mozilla developers and community members Christian Holler, Gary Kwong, Andre Bargull, Jan de Mooij, Tom Schuster, and Oriol reported memory safety bugs present in Firefox 50.1 and Firefox ESR 45.6. Some of these bugs showed evidence of memory corruption and we presume that with enough effort that some of these could be exploited to run arbitrary code.

- JIT code allocation can allow for a bypass of ASLR and DEP protections leading to potential memory corruption attacks. (CVE-2017-5375)

- Use-after-free while manipulating XSL in XSLT documents (CVE-2017-5376)

- Hashed codes of JavaScript objects are shared between pages. This allows for pointer leaks because an object's address can be discovered through hash codes, and also allows for data leakage of an object's content using these hash codes. (CVE-2017-5378)

- A potential use-after-free found through fuzzing during DOM manipulation of SVG content. (CVE-2017-5380)

- URLs containing certain unicode glyphs for alternative hyphens and quotes do not properly trigger punycode display, allowing for domain name spoofing attacks in the location bar. (CVE-2017-5383)

- WebExtension scripts can use the 'data:' protocol to affect pages loaded by other web extensions using this protocol, leading to potential data disclosure or privilege escalation in affected extensions.

- The JSON viewer in the Developer Tools uses insecure methods to create a communication channel for copying and viewing JSON or HTTP headers data, allowing for potential privilege escalation. (CVE-2017-5390)

- A use-after-free vulnerability in the Media Decoder when working with media files when some events are fired after the media elements are freed from memory.

Note that Tenable Network Security has extracted the preceding description block directly from the Mozilla security advisories.
Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.


Upgrade to Mozilla Firefox ESR version 45.7 or later.

See Also

Plugin Details

Severity: High

ID: 96773

File Name: macosx_firefox_45_7_esr.nasl

Version: $Revision: 1.4 $

Type: local

Agent: macosx

Published: 2017/01/25

Modified: 2017/03/15

Dependencies: 55417

Risk Information

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

Temporal Vector: CVSS2#E:POC/RL:OF/RC:ND


Base Score: 8.8

Temporal Score: 7.9

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

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

Vulnerability Information

CPE: cpe:/a:mozilla:firefox_esr

Required KB Items: MacOSX/Firefox/Installed

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 2017/01/24

Vulnerability Publication Date: 2017/01/24

Reference Information

CVE: CVE-2017-5373, CVE-2017-5375, CVE-2017-5376, CVE-2017-5378, CVE-2017-5380, CVE-2017-5383, CVE-2017-5386, CVE-2017-5390, CVE-2017-5396

BID: 95757, 95758, 95762, 95769

OSVDB: 150831, 150832, 150834, 150836, 150837, 150858, 150859, 150860, 150861, 150862, 150863, 150864, 150865, 150866, 150875, 150878, 150881

MFSA: 2017-02