Multiple Vulnerabilities Detected in Apple Products

Multiple Vulnerabilities Detected in Apple Products

A cybersecurity advisory was issued Tuesday, May 14, 2019, regarding multiple vulnerabilities in Apple products. The vulnerability could allow for arbitrary code execution.

What It Is:
Multiple vulnerabilities have been discovered in watchOS, Safari, tvOS, iOS, Mojave, High Sierra and Sierra. The most severe of these vulnerabilities could allow for arbitrary code execution.

• watchOS is the mobile operating system for the Apple Watch and is based on the iOS operating system.
• Safari is a web browser available for OS X.
• 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.
• Mojave
• High Sierra is a desktop and server operating system for Macintosh computers.
• Sierra is a desktop and server operating system for Macintosh computers.

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.

Learn more from the following Apple References:

https://support.apple.com/en-us/HT210118
https://support.apple.com/en-us/HT210119
https://support.apple.com/en-us/HT210120
https://support.apple.com/en-us/HT210121
https://support.apple.com/en-us/HT210122
https://support.apple.com/en-us/HT210123

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

Systems Affected:

• watchOS versions prior to 5.2.1
• Safari versions prior to 12.1.1
• Apple TV Software 7.3
• tvOS versions prior to 12.3
• iOS versions prior to 12.3
• macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra

Risk:
Government:
• Large and medium government entities: High
• Small government entities: High
Businesses:
• Large and medium business entities: High
• Small business entities: High
Home users: Low

What It Means:
If you and/or your business utilize the above Apple products, you will need to download the appropriate update(s) for your device(s) following proper testing.

Technical Summary:
Multiple vulnerabilities have been discovered in watchOS, Safari, tvOS, iOS, Mojave, High Sierra and Sierra. 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)
• Multiple memory corruption issues were addressed with improved memory handling. (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)

What To Do:
We recommend the following actions be taken:

• Apply appropriate patches provided by Apple to vulnerable 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 download, accept, or execute files from untrusted or unknown sources.
• Remind users not to visit untrusted websites or follow links provided by unknown or untrusted sources.
• Apply the Principle of Least Privilege to all systems and services.

Negative Consequences of Lost or Stolen Data:
The loss or theft of proprietary data can have severe impacts, particularly if the compromise becomes public and sensitive information is exposed. Possible impacts include:

• Temporary or permanent loss of sensitive or proprietary information.
• Disruption to regular operations.
• Financial losses incurred to restore systems and files.
• Potential harm to an organization’s reputation.

Should your agency or business need assistance with issues arising from vulnerabilities in Apple products including updates and/or patches, Dox can help. Please contact Dox if there is anything we can do to assist in securing your agency, business, or organization.

Thank you for your time and stay safe online.