Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution

ITS Advisory Number: 
2018-072
Date(s) Issued: 
Tuesday, July 10, 2018
Subject: 
Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution
Overview: 

Multiple vulnerabilities have been discovered in iTunes, iCloud for Windows, Safari, macOS High Sierra, Sierra, and El Capitan, watchOS, tvOS, and iOS. The most severe of these vulnerabilities could allow for arbitrary code execution: 

  • iTunes is a media player, media library, online radio broadcaster, and mobile device management application developed by Apple.

  • iCloud is a cloud storage service.

  • Safari is a web browser available for OS X.

  • macOS High Sierra, Sierra, El Capitan are desktop and server operating systems for Macintosh computers.

  • watchOS is the mobile operating system for the Apple Watch and is based on the iOS operating system.

  • tvOS is an operating system for the fourth-generation Apple TV digital media player.

  • 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, an attacker could then install programs; view, change, delete data, and create new accounts with full user rights.

 

THREAT INTELLIGENCE:

There are currently no reports of these vulnerabilities being exploited in the wild.

Systems Affected: 
  • iTunes versions prior to 12.8 for Windows

  • iCloud for Windows prior to Version 7.6

  • Safari versions prior to 11.1.2

  • macOS High Sierra versions prior to 10.13.6, Security Update 2018-004 Sierra, Security Update 2018-004 El Capitan

  • watchOS versions prior to 4.3.2

  • tvOS versions prior to 11.4.1

  • iOS versions prior to 11.4.1

RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
Medium
BUSINESS
Large and medium business entities: 
High
Small business entities: 
Medium
Home Users: 
Low
Description: 

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

  • A cookie management issue was addressed with improved checks. (CVE-2018-4293)

  • A denial of service issue was addressed with improved memory handling. (CVE-2018-4290)

  • Multiple memory corruption issues were addressed with improved input validation. (CVE-2018-4269, CVE-2018-4271, CVE-2018-4273)

  • An information disclosure issue was addressed by removing the vulnerable code. (CVE-2018-4289)

  • An out-of-bounds read was addressed with improved input validation. (CVE-2018-4248)

  • A permissions issue existed in which execute permission was incorrectly granted. This issue was addressed with improved permission validation. (CVE-2018-4178)

  • A race condition was addressed with additional validation. (CVE-2018-4266)

  • Lazy FP state restore instead of eager save and restore of the state upon a context switch. Lazy restored states are potentially vulnerable to exploits where one process may infer register values of other processes through a speculative execution side channel that infers their value. (CVE-2018-3665)

  • Multiple inconsistent user interface issues were addressed with improved state management. (CVE-2018-4260, CVE-2018-4279)

  • Multiple memory corruption issues were addressed with improved memory handling. (CVE-2018-4261, CVE-2018-4262, CVE-2018-4263, CVE-2018-4264, CVE-2018-4265, CVE-2018-4267, CVE-2018-4268, CVE-2018-4270, CVE-2018-4272, CVE-2018-4275, CVE-2018-4280)

  • Multiple out-of-bounds read issues existed that led to the disclosure of kernel memory. This was addressed with improved input validation. (CVE-2018-4282, CVE-2018-4283)

  • Multiple spoofing issues existed in the handling of URLs. This issues were addressed with improved input validation. (CVE-2018-4274, CVE-2018-4277)

  • Multiple type confusion issues were addressed with improved memory handling. (CVE-2018-4284, CVE-2018-4285)

  • Sound fetched through audio elements may be exfiltrated cross-origin. This issue was addressed with improved audio taint tracking. (CVE-2018-4278) 

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, an attacker could then install programs; view, change, delete data, and create new accounts with full user rights.

Actions: 
  • After appropriate testing, immediately apply appropriate 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/HT208932

https://support.apple.com/en-us/HT208933

https://support.apple.com/en-us/HT208934

https://support.apple.com/en-us/HT208935

https://support.apple.com/en-us/HT208936

https://support.apple.com/en-us/HT208937

https://support.apple.com/en-us/HT208938
 

CVE:

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-3665

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4178

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4248

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4260

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4261

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4262

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4263

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4264

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4265

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4266

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4267

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4268

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4269

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4270

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4271

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4272

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4273

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4274

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4275

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4277

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4278

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4279

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4280

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4282

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4283

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4284

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4285

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4289

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4290

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4293