Mozilla Firefox < 44.0.2 Security Bypass Vulnerability

medium Nessus Network Monitor Plugin ID 9077


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


The version of Firefox installed is prior to 44.0.2 and is affected by a security bypass vulnerability due to improper restriction of interaction between service workers and plugins. An unauthenticated, remote attacker can exploit this using a crafted web site that triggers spoofed responses to requests that use NPAPI to bypass the same-origin policy. (CVE-2016-1949)


Upgrade to Firefox 44.0.2 or later.

See Also

Plugin Details

Severity: Medium

ID: 9077

Family: Web Clients

Published: 2/19/2016

Updated: 3/6/2019

Dependencies: 9131

Nessus ID: 88752, 88754

Risk Information

Risk Factor: Medium

CVSS v2.0

Base Score: 4.3

Temporal Score: 3.2

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 3.7

Temporal Score: 3.5

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

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

Vulnerability Information

CPE: cpe:2.3:a:mozilla:firefox:*:*:*:*:*:*:*:*

Patch Publication Date: 2/12/2016

Vulnerability Publication Date: 2/11/2016

Reference Information

CVE: CVE-2016-1949

BID: 82991