Mozilla Firefox 49.x < 50.0.1 HTTP Redirect Handling Same-origin Policy Bypass

Medium Nessus Plugin ID 95436


The remote macOS or Mac OS X host contains a web browser that is affected by a same-origin policy bypass vulnerability.


The version of Mozilla Firefox installed on the remote macOS or Mac OS X host is 49.x prior to 50.0.1. It is, therefore, affected by a same-origin policy bypass vulnerability in the GetChannelResultPrincipal() function in nsScriptSecurityManager.cpp due to improper handling of HTTP redirects to 'data: URLs'. An unauthenticated, remote attacker can exploit this to bypass the same-origin policy.


Upgrade to Mozilla Firefox version 50.0.1 or later.

See Also

Plugin Details

Severity: Medium

ID: 95436

File Name: macosx_firefox_50_0_1.nasl

Version: 1.5

Type: local

Agent: macosx

Published: 2016/12/01

Updated: 2018/07/14

Dependencies: 55417

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: 4.3

Temporal Score: 3.8

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

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

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Required KB Items: MacOSX/Firefox/Installed

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/11/28

Vulnerability Publication Date: 2016/11/28

Reference Information

CVE: CVE-2016-9078

BID: 94569

MFSA: 2016-91