x
Limited Time Offer: Save up to 20% on a new CIS SecureSuite Membership | Learn more
×
Why CIS Solutions Join CIS Resources
CIS WorkBench Sign-in CIS WorkBench Sign In CIS Hardened Images CIS Hardened Images Support CIS Support


Why CIS

Who We Are

CIS is an independent, nonprofit organization with a mission to create confidence in the connected world



About Us Leadership Principles Testimonials

Solutions

secure your organization
Secure Your Organization


secure specific platforms
Secure Specific Platforms


cis securesuite CIS SecureSuite® Learn More      Apply Now  
u s state local tribal and territorial governments
U.S. State, Local, Tribal & Territorial Governments


View All Products & Services  

Join CIS

Get Involved

Join CIS as a member, partner, or volunteer - or explore our career opportunities



CIS SecureSuite® Membership Multi-State ISAC (MS-ISAC®) Elections Infrastructure ISAC (EI-ISAC®) CIS CyberMarket® Vendors CIS Communities Careers

Resources

resources
Resources


learn
Learn


filter by topic
Filter by Topic


View All Resources  
CIS Logo Show Search Expand Menu

Multiple Vulnerabilities in Apple Products Could Allow for Remote Code Execution

MS-ISAC ADVISORY NUMBER:

2021-111

DATE(S) ISSUED:

09/14/2021

OVERVIEW:

Multiple vulnerabilities have been discovered in Apple Products, the most severe of which could allow for remote code execution.  
  • Safari is a graphical web browser developed by Apple, based on the WebKit engine.
  • watchOS is the mobile operating system for Apple Watch and is based on the iOS operating system.
  • iOS is a mobile operating system for mobile devices, including the iPhone, iPad, and iPod touch.
  • iPadOS is the successor to iOS 12 and is a mobile operating system for iPads.
  • macOS Big Sur is the 17th and current major release of macOS.
  • macOS Catalina is the 16th major release of macOS.
  • macOS Mojave is the 15th major release of macOS.
Successful exploitation of the most severe of these vulnerabilities could result in remote code execution in the context of the affected user.

THREAT INTELLIGENCE:

Apple has reported both CVE-2021-30858 and CVE-2021-30860 are being exploited in the wild.

SYSTEMS AFFECTED:

  • watchOS versions before 7.6.2
  • Safari versions before 14.1.2 (14611.3.10.1.7 on macOS Mojave and 15611.3.10.1.7 on macOS Catalina)
  • iOS/iPadOS versions before 14.8
  • macOS Big Sur versions before 11.6
  • macOS Catalina without Security Update 2021-005

RISK:

Government:
  • Large and medium government entities: Medium
  • Small government entities: Medium
Businesses:
  • Large and medium business entities: MEDIUM
  • Small business entities: MEDIUM
Home Users: LOW

TECHNICAL SUMMARY:

Multiple vulnerabilities have been discovered in Apple Products, the most severe of which could allow for remote code execution.  
  • Safari is a graphical web browser developed by Apple, based on the WebKit engine.
  • watchOS is the mobile operating system for Apple Watch and is based on the iOS operating system.
  • iOS is a mobile operating system for mobile devices, including the iPhone, iPad, and iPod touch.
  • iPadOS is the successor to iOS 12 and is a mobile operating system for iPads.
  • macOS Big Sur is the 17th and current major release of macOS.
  • macOS Catalina is the 16th major release of macOS.
  • macOS Mojave is the 15th major release of macOS.
  Successful exploitation of the most severe of these vulnerabilities could result in remote code execution in the context of the affected user.  

RECOMMENDATIONS:

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 nonprivileged user (one without administrative privileges) to diminish the effects of a successful attack.
  • Remind users not to download, accept or execute files from untrusted and unknown sources.
  • Remind users not to visit untrusted websites or follow links provided by untrusted or unknown sources.
  • Evaluate read, write, and execute permissions on all newly installed software.
  • Apply the Principle of Least Privilege to all systems and services.

REFERENCES:

Apple:

https://support.apple.com/en-us/HT201222

https://support.apple.com/en-us/HT212804

https://support.apple.com/en-us/HT212805

https://support.apple.com/en-us/HT212806

https://support.apple.com/en-us/HT212807

https://support.apple.com/en-us/HT212808

CVE:

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30858

https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-30860

Get Email Updates When Cyber Threats Like This Arise

Arrow Subscribe to Advisories

Information Hub : Advisories


CONTROL: 1 --- ADVISORY CONTROL: 0
CONTROL: 2 --- ADVISORY CONTROL: 0
CONTROL: 3 --- ADVISORY CONTROL: 0
CONTROL: 4 --- ADVISORY CONTROL: 0