Mozilla Firefox < 62.0.3 Multiple Vulnerabilities

high Nessus Network Monitor Plugin ID 700409
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The remote host has a web browser installed that is vulnerable to multiple attack vectors.


Versions of Mozilla Firefox prior to 62.0.3 are unpatched for the following vulnerabilities as referenced in the mfsa2018-24 advisory:

- A vulnerability in register allocation in JavaScript can lead to type confusion, allowing for an arbitrary read and write. This leads to remote code execution inside the sandboxed content process when triggered. (CVE-2018-12386)
- A vulnerability where the JavaScript JIT compiler inlines 'Array.prototype.push' with multiple arguments that results in the stack pointer being off by 8 bytes after a bailout. This leaks a memory address to the calling function which can be used as part of an exploit inside the sandboxed content process. (CVE-2018-12387)


Upgrade to Firefox version 62.0.3 or later.

See Also

Plugin Details

Severity: High

ID: 700409

Family: Web Clients

Published: 2/7/2019

Updated: 3/6/2019

Dependencies: 9131

Nessus ID: 117921

Risk Information


Risk Factor: Medium

Base Score: 5.8

Temporal Score: 5

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

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


Risk Factor: High

Base Score: 8.1

Temporal Score: 7.7

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

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

Vulnerability Information

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

Patch Publication Date: 10/2/2018

Vulnerability Publication Date: 10/2/2018

Reference Information

CVE: CVE-2018-12386, CVE-2018-12387

BID: 105460