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

High Nessus Plugin ID 88751


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


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.

- 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


Upgrade to Mozilla Firefox ESR version 38.6.1 or later.

See Also

Plugin Details

Severity: High

ID: 88751

File Name: macosx_firefox_38_6_1_esr.nasl

Version: $Revision: 1.9 $

Type: local

Agent: macosx

Published: 2016/02/16

Modified: 2016/05/03

Dependencies: 55417

Risk Information

Risk Factor: High


Base Score: 9.3

Temporal Score: 7.1

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

Temporal Vector: CVSS2#E:U/RL:U/RC:UC

Vulnerability Information

CPE: cpe:/a:mozilla:firefox_esr

Required KB Items: MacOSX/Firefox/Installed

Exploit Available: false

Exploit Ease: No known exploits are available

Patch Publication Date: 2016/02/11

Vulnerability Publication Date: 2016/02/05

Reference Information

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

BID: 82991

OSVDB: 134246, 135666

MFSA: 2016-14, 2016-38