Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution

ITS Advisory Number: 
2019-034
Date(s) Issued: 
Tuesday, March 26, 2019
Subject: 
Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution
Overview: 

Multiple vulnerabilities have been discovered in iCloud, iTunes, Safari, Mojave, High Sierra, Sierra, tvOS, Xcode, and iOS. The most severe of these vulnerabilities could allow for arbitrary code execution.

  • iCloud is a cloud storage service.
  • iTunes is a media player, media library, online radio broadcaster, and mobile device management application developed by Apple.
  • Safari is a web browser available for OS X.
  • macOS Mojave is a desktop and server operating system for Macintosh computers.
  • High Sierra is a desktop and server operating system for Macintosh computers.
  • Sierra is a desktop and server operating system for Macintosh computers.
  • tvOS is an operating system for the fourth-generation Apple TV digital media player.
  • Xcode is an integrated development environment containing a suite of software development tools developed by Apple Inc.
  • iOS is a mobile operating system for mobile devices, including the iPhone, iPad, and iPod touch.

Successful exploitation of the most severe of these vulnerabilities could result in arbitrary code execution within the context of the application, an attacker gaining the same privileges as the logged-on user, or the bypassing of security restrictions. Depending on the privileges associated with the user or application, an attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.

Systems Affected: 
  • iCloud for Windows prior to Version 7.11
  • iTunes versions prior to 12.9.4 for Windows
  • Safari versions prior to 12.1
  • macOS Mojave 10.14.4, Security Update 2019-002 High Sierra, Security Update 2019-002 Sierra
  • tvOS versions prior to 12.2
  • Xcode versions prior to 10.2
  • iOS versions prior to 12.2
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: 
Low
Description: 

Multiple vulnerabilities have been discovered in iCloud, iTunes, Safari, Mojave, High Sierra, Sierra, tvOS, Xcode, and iOS. The most severe of these vulnerabilities could allow for arbitrary code execution. Details of these vulnerabilities are as follows:

  • A buffer overflow issue was addressed with improved memory handling. (CVE-2019-6224)
  • A buffer overflow was addressed with improved bounds checking. (CVE-2019-6213)
  • A cross-site scripting issue existed in Safari. This issue was addressed with improved URL validation. (CVE-2019-6228)
  • A denial of service issue was addressed with improved validation. (CVE-2019-6219)
  • A logic issue was addressed with improved validation. (CVE-2019-6229)
  • A memory consumption issue was addressed with improved memory handling. (CVE-2018-4452)
  • A memory corruption issues were addressed with improved input validation. (CVE-2018-20346, CVE-2018-20505, CVE-2018-20506)
  • A memory corruption issue was addressed with improved lock state checking. (CVE-2019-6205)
  • An issue existed with autofill resuming after it was canceled. The issue was addressed with improved state management. (CVE-2019-6206)
  • An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. (CVE-2019-6209)
  • Multiple memory corruption issues were addressed with improved input validation. (CVE-2019-6210, CVE-2019-6218)
  • Multiple memory corruption issues were addressed with improved memory handling. (CVE-2019-6212, CVE-2019-6216, CVE-2019-6217, CVE-2019-6226, CVE-2019-6227, CVE-2019-6233, CVE-2019-6234)
  • Multiple memory corruption issues were addressed with improved state management. (CVE-2018-4467, CVE-2019-6211)
  • Multiple memory corruption issues were addressed with improved validation. (CVE-2019-6225, CVE-2019-6235)
  • Multiple memory initialization issues were addressed with improved memory handling. (CVE-2019-6208, CVE-2019-6230)
  • Multiple out-of-bounds read was addressed with improved bounds checking. (CVE-2019-6202, CVE-2019-6221, CVE-2019-6231)
  • Multiple out-of-bounds read was addressed with improved input validation. (CVE-2019-6200, CVE-2019-6220)
  • Multiple type confusion issues were addressed with improved memory handling. (CVE-2019-6214, CVE-2019-6215)
Actions: 
  • After appropriate testing, immediately apply patches provided by Apple to vulnerable systems.
  • Run all software as a non-privileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to download, accept, or execute files from un-trusted or unknown sources.
  • Remind users not to visit untrusted websites or follow links provided by unknown or un-trusted sources.
  • Apply the Principle of Least Privilege to all systems and services.
References: 

Apple:

https://support.apple.com/en-us/HT209599

https://support.apple.com/en-us/HT209600

https://support.apple.com/en-us/HT209601

https://support.apple.com/en-us/HT209603

https://support.apple.com/en-us/HT209604

https://support.apple.com/en-us/HT209605

https://support.apple.com/en-us/HT209606

 

CVE:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4452

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4467

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6200

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6202

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6205

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6206

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6208

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6209

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6210

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6211

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6212

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6213

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6214

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6215

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6216

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6217

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6218

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6219

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6220

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6221

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6224

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6225

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6226

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6227

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6228

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6229

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6230

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6231

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6233

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6234

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-6235

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20346

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20505

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20506