Multiple Vulnerabilities in Apple Mac OS X

ITS Advisory Number: 
2014-082
Date(s) Issued: 
Thursday, September 18, 2014
Subject: 
Multiple Vulnerabilities in Apple Mac OS X
Overview: 

Multiple vulnerabilities have been discovered in Apple's Mac OS X prior to 10.9.5. Mac OS X is an operating system for Apple computers. These vulnerabilities can be exploited if a user visits or is redirected to a specially crafted webpage; or opens a specially crafted file or email attachment. Successful exploitation could result in an attacker gaining the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

Systems Affected: 
  • Apple OS X prior to 10.9.5
RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
High
BUSINESS
Large and medium business entities: 
High
Small business entities: 
High
Home Users: 
High
Description: 

Multiple vulnerabilities have been discovered in Apple Mac OS X. These vulnerabilities can be exploited if a user visits or is redirected to a specially crafted webpage or opens a specially crafted file. The vulnerabilities are as follows:

  • A local security-bypass vulnerability in the kernel. Specifically, this issue occurs because CPU Global Descriptor Table is allocated at a predictable address (CVE-2014-4403).
  • An arbitrary code-execution vulnerability because it fails to properly validate user-supplied input. Specifically, this issue occurs due to a null-pointer-deference condition with in the IOAcceleratorFamily component when handling IOKit API arguments (CVE-2014-4376).
  • An arbitrary code-execution vulnerability because it fails to properly bounds check user-supplied input. Specifically, this issue occurs in the Intel Graphics Driver (CVE-2014-4394, CVE-2014-4396, CVE-2014-4395, CVE-2014-4397, CVE-2014-4398, CVE-2014-4399, CVE-2014-4400, CVE-2014-4401, CVE-2014-4416).
  • An arbitrary code-execution vulnerability because it fails to properly bounds check user-supplied input. Specifically, this issue occurs because the application fails to properly handle a Bluetooth API call (CVE-2014-4390).
  • An integer-overflow vulnerability because it fails to perform adequate boundary checks on user-supplied data. Specifically, the issue occurs in the 'CoreGraphics' component when handling specially crafted PDF files   (CVE-2014-4377).
  • A buffer-overflow vulnerability because it fails to perform adequate bounds checks on user-supplied input. Specifically, this issue exists in the handling of a crafted MIDI file of the 'QT Media Foundation' component (CVE-2014-4350).
  • An information-disclosure vulnerability because it fails to properly handle external XML data. Specifically, this issue occurs in the NSXMLParser of the Foundation module (CVE-2014-4374).    

Successful exploitation could result in an attacker gaining the same privileges as the logged on user. Depending on the privileges associated with the user, an attacker could install programs; view, change, or delete data; or create new accounts with full user rights.

Actions: 

We recommend the following actions be taken:

  • Apply appropriate patches provided by Apple to affected systems immediately after appropriate testing.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
  • Remind users not to open email attachments from unknown users or suspicious emails from trusted sources.
References: 

APPLE:
http://support.apple.com/kb/HT6443

CVE:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4350
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4376
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4377
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4390
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4394
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4395
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4396
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4397
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4398
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4399
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4400
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4401
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4403
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-4416