Mozilla Firefox < 49.0.2 Multiple Vulnerabilities

High Nessus Network Monitor Plugin ID 9751


The remote host has a web browser installed that is vulnerable to multiple attack vectors.


Versions of Mozilla Firefox prior to 49.0.2 are unpatched for the following vulnerabilities :

- An error is triggered during actor destruction with 'service workers'. This may allow a context-dependent attacker to dereference already freed memory and potentially execute arbitrary code. (CVE-2016-5287)
- An unspecified flaw is triggered when e10s is disabled. This may allow a context-dependent attacker to use specially crafted web content to disclose potentially sensitive information in the HTTP cache related to page visits and content. (CVE-2016-5288)


Upgrade to Firefox version 49.0.2 or later.

See Also

Plugin Details

Severity: High

ID: 9751

File Name: 9751.prm

Family: Web Clients

Published: 2016/11/04

Modified: 2016/11/23

Dependencies: 9131

Nessus ID: 94231, 94232

Risk Information

Risk Factor: High


Base Score: 9.3

Temporal Score: 8.1

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

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


Base Score: 8.1

Temporal Score: 7.7


Temporal Vector: CVSS3#E:X/RL:O/RC:C

Vulnerability Information

CPE: cpe:/a:mozilla:firefox

Patch Publication Date: 2016/10/20

Vulnerability Publication Date: 2016/10/20

Reference Information

CVE: CVE-2016-5287, CVE-2016-5288

BID: 93810, 93811