Firefox < 44.0.2 Service Workers Security Bypass

high Nessus Plugin ID 88754
New! Plugin Severity Now Using CVSS v3

The calculated severity for Plugins has been updated to use CVSS v3 by default. Plugins that do not have a CVSS v3 score will fall back to CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Synopsis

The remote Windows host contains a web browser that is affected by a security bypass vulnerability.

Description

The version of Mozilla Firefox installed on the remote Windows host is prior to 44.0.2. It is, therefore, affected by a security bypass vulnerability due to improper restriction of interaction between service workers and plugins. An unauthenticated, remote attacker can exploit this, via a crafted web site that triggers spoofed responses to requests that use NPAPI, to bypass the same-origin policy.

Solution

Upgrade to Mozilla Firefox version 44.0.2 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2016-13/

Plugin Details

Severity: High

ID: 88754

File Name: mozilla_firefox_44_0_2.nasl

Version: 1.8

Type: local

Agent: windows

Family: Windows

Published: 2/16/2016

Updated: 11/20/2019

Dependencies: mozilla_org_installed.nasl

Risk Information

CVSS Score Source: CVE-2016-1949

VPR

Risk Factor: Medium

Score: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P

Temporal Vector: E:U/RL:OF/RC:C

CVSS v3

Risk Factor: High

Base Score: 8.8

Temporal Score: 7.7

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

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

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: Mozilla/Firefox/Version

Exploit Ease: No known exploits are available

Patch Publication Date: 2/11/2016

Vulnerability Publication Date: 2/11/2016

Reference Information

CVE: CVE-2016-1949

MFSA: 2016-13