Firefox ESR < 38.6.1 Multiple Graphite 2 Library RCE (Mac OS X)

high Nessus Plugin ID 88751

Synopsis

The remote Mac OS X host contains a web browser that is affected by a remote code execution vulnerability.

Description

The version of Mozilla Firefox ESR installed on the remote Mac OS X host is prior to 38.6.1. It is, therefore, affected by multiple remote code execution vulnerabilities in the Graphite 2 library :

- An overflow condition exists in the Context Item functionality due to improper validation of user-supplied input. An unauthenticated, remote attacker can exploit this, via a crafted Graphite smart font, to cause a heap-based buffer overflow, resulting in a denial of service or the execution of arbitrary code.
(CVE-2016-1523)

- An out-of-bounds write error exists in the setAttr() function that is triggered when handling maliciously crafted fonts. An unauthenticated, remote attacker can exploit this to execute arbitrary code. (CVE-2016-1969

Solution

Upgrade to Mozilla Firefox ESR version 38.6.1 or later.

See Also

https://www.mozilla.org/en-US/security/advisories/mfsa2016-14/

https://www.mozilla.org/en-US/security/advisories/mfsa2016-38/

Plugin Details

Severity: High

ID: 88751

File Name: macosx_firefox_38_6_1_esr.nasl

Version: 1.12

Type: local

Agent: macosx

Published: 2/16/2016

Updated: 11/20/2019

Supported Sensors: Nessus Agent

Risk Information

CVSS Score Source: CVE-2016-1969

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_esr

Required KB Items: MacOSX/Firefox/Installed

Exploit Ease: No known exploits are available

Patch Publication Date: 2/11/2016

Vulnerability Publication Date: 2/5/2016

Reference Information

CVE: CVE-2016-1523, CVE-2016-1969

BID: 82991

MFSA: 2016-14, 2016-38