Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution

ITS Advisory Number: 
2018-061
Date(s) Issued: 
Monday, June 4, 2018
Subject: 
Multiple Vulnerabilities in Apple Products Could Allow for Arbitrary Code Execution
Overview: 

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

  • iCloud is a cloud storage service.

  • Safari is a web browser available for macOS.

  • macOS High Sierra is a desktop and server operating system for Macintosh computers.

  • macOS Sierra is a desktop and server operating system for Macintosh computers.

  • macOS El Capitan is a desktop and server operating system for Macintosh computers.

  • iOS is a mobile operating system for mobile devices, including the iPhone, iPad, and iPod touch.

  • 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.

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

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, or delete data; or create new accounts with full user rights.

 

THREAT INTELLIGENCE:

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

Systems Affected: 
  • iCloud for Windows versions prior to Version 7.5

  • Safari versions prior to 11.1.1

  • macOS High Sierra versions prior to 10.13.5, Security Update 2018-003 Sierra, and Security Update 2018-003 El Capitan

  • iOS versions prior to 11.4

  • watchOS versions prior to 4.3.1

  • tvOS versions prior to 11.4

  • iTunes versions prior to 12.7.5 for Windows

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 iCloud, Safari, macOS High Sierra, Sierra, and El Capitan, iOS, watchOS, tvOS and iTunes. 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-2018-4199)

  • A buffer overflow was addressed with improved bounds checking. (CVE-2018-4241, CVE-2018-4243)

  • A buffer overflow was addressed with improved size validation. (CVE-2018-4215)

  • A device configuration issue was addressed with an updated configuration. (CVE-2018-4251)

  • A logic issue was addressed with improved validation. (CVE-2018-4237)

  • A memory corruption issues were addressed with improved memory handling. (CVE-2018-4201, CVE-2018-4218, CVE-2018-4233)

  • A memory corruption issue was addressed with improved error handling. (CVE-2018-4206)

  • A memory corruption issue was addressed with improved input validation. (CVE-2018-4214)

  • A memory corruption issue was addressed with improved state management. (CVE-2018-4200)

  • A memory corruption issue was addressed with improved validation. (CVE-2018-4211)

  • A memory corruption vulnerability was addressed with improved locking. (CVE-2018-4242)

  • An information disclosure issue existed in Accessibility Framework. This issue was addressed with improved memory management. (CVE-2018-4196)

  • An information disclosure issue existed in device properties. This issue was addressed with improved object management. (CVE-2018-4171)

  • An injection issue was addressed with improved input validation. (CVE-2018-4235)

  • An input validation issue was addressed with improved input validation. (CVE-2018-4202)

  • An issue existed in parsing entitlement plists. This issue was addressed with improved input validation. (CVE-2018-4229)

  • An issue existed in the handling of encrypted Mail. This issue was addressed with improved isolation of MIME in Mail. (CVE-2018-4227)

  • An issue existed in the handling of S-MIME certificates. This issue was addressed with improved validation of S-MIME certificates. (CVE-2018-4221)

  • An out-of-bounds read issue existed that led to the disclosure of kernel memory. This was addressed with improved input validation. (CVE-2018-4253)

  • An out-of-bounds read was addressed with improved input validation. (CVE-2018-4222)

  • A permissions issue existed in Magnifier. This was addressed with additional permission checks. (CVE-2018-4239)

  • A permissions issue existed in the handling of web browser cookies. This issue was addressed with improved restrictions. (CVE-2018-4232)

  • A sandbox issue existed in the handling of microphone access. This issue was addressed with improved handling of microphone access. (CVE-2018-4184)

  • A validation issue existed in the handling of phone numbers. This issue was addressed with improved validation of phone numbers. (CVE-2018-4100)

  • A validation issue existed in the handling of text. This issue was addressed with improved validation of text. (CVE-2018-4198)

  • Credentials were unexpectedly sent when fetching CSS mask images. This was addressed by using a CORS-enabled fetch method. (CVE-2018-4190)

  • Processing a maliciously crafted message may lead to a denial of service. This issue was addressed with improved message validation. (CVE-2018-4240, CVE-2018-4250)

  • In some circumstances, some operating systems may not expect or properly handle an Intel architecture debug exception after certain instructions. The issue appears to be from an undocumented side effect of the instructions. An attacker might utilize this exception handling to gain access to Ring 0 and access sensitive memory or control operating system processes. (CVE-2018-8897)

  • Multiple authorization issues were addressed with improved state management. (CVE-2018-4223, CVE-2018-4224, CVE-2018-4225, CVE-2018-4226)

  • Multiple denial of service issues were addressed with improved validation. (CVE-2018-4247, CVE-2018-4249)

  • Multiple inconsistent user interface issues were addressed with improved state management. (CVE-2018-4188, CVE-2018-4205)

  • Multiple issues existed with Siri permissions. This was addressed with improved permission checking. (CVE-2018-4238, CVE-2018-4244, CVE-2018-4252)

  • Multiple memory corruption issues were addressed with improved memory handling. (CVE-2018-4193, CVE-2018-4204, CVE-2018-4234, CVE-2018-4236, CVE-2018-4249)

  • Multiple race conditions were addressed with improved locking. (CVE-2018-4192, CVE-2018-4228, CVE-2018-4230)

  • Multiple type confusion issues were addressed with improved memory handling. (CVE-2018-4219, CVE-2018-4246)

  • Multiple validation issues were addressed with improved input sanitization. (CVE-2018-4141, CVE-2018-4159)

  • Issues in php were addressed by updating to php version 7.1.16. (CVE-2018-7584)

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, or delete data; or create new accounts with full user rights.

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/HT208848

https://support.apple.com/en-us/HT208849

https://support.apple.com/en-us/HT208850

https://support.apple.com/en-us/HT208851

https://support.apple.com/en-us/HT208852

https://support.apple.com/en-us/HT208853

https://support.apple.com/en-us/HT208854

 

CVE: 

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4100

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4141

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4159

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4171

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4184

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4188

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4190

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4192

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4193

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4196

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4198

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4199

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4200

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4201

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4202

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4204

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4205

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4206

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4211

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4214

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4215

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4218

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4219

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4221

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4222

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4223

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4224

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4225

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4226

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4227

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4228

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4229

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4230

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4232

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4233

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4234

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4235

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4236

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4237

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4238

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4239

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4240

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4241

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4242

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4243

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4244

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4246

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4247

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4249

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4250

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4251

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4252

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-4253

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-7584

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8897