[Tech-l] FW: MS-ISAC CYBERSECURITY ADVISORY - A Vulnerability in Apple Products Could Allow for Arbitrary Code Execution - PATCH: NOW - TLP: WHITE
Thor Sage
sage at mveca.org
Wed Mar 10 07:30:25 EST 2021
Please see the additional advisory from MS-ISAC regarding vulnerabilities in Apple Products. Recommendations include.
• 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 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.
Thank you,
Thor
Thor Sage
Executive Director
Miami Valley Educational Computer Association
937-767-1468 x3101
[http://www.mveca.org/images/logo.gif]<http://www.mveca.org/> [i] <https://www.linkedin.com/company/mveca/> [t] <https://twitter.com/mvecarcog> [f] <https://www.facebook.com/MVECA-707401659416692/>
Not-for-profit Technology Services for Education and Local Governments
From: MS-ISAC Advisory <MS-ISAC.Advisory at msisac.org>
Sent: Tuesday, March 9, 2021 9:20 PM
To: Michael Aliperti <Michael.Aliperti at cisecurity.org>
Subject: MS-ISAC CYBERSECURITY ADVISORY - A Vulnerability in Apple Products Could Allow for Arbitrary Code Execution - PATCH: NOW - TLP: WHITE
Importance: High
TLP: WHITE
MS-ISAC CYBERSECURITY ADVISORY
MS-ISAC ADVISORY NUMBER:
2021-033
DATE(S) ISSUED:
03/09/2021
SUBJECT:
A Vulnerability in Apple Products Could Allow for Arbitrary Code Execution
OVERVIEW:
Multiple vulnerabilities have been discovered in Apple products, the most severe of which could allow for arbitrary code execution.
* macOS Big Sur is a desktop operating system for Macintosh computers.
* watchOS is a mobile operating system created & developed by Apple to be utilized by its Apple Watch product line.
* iOS is a mobile operating system created & developed by Apple to be utilized by its mobile devices such as the iPhone.
* Safari is a web browser available for macOS.
* iPadOS is a mobile operating system created & developed by Apple to be utilized by its iPad product line.
Successful exploitation of this vulnerability 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 permission associated with the application running the exploit, an attacker could then install programs; view, change, or delete data.
THREAT INTELLIGENCE:
There are no reports of these vulnerabilities being exploited in the wild.
SYSTEMS AFFECTED:
* watchOS versions prior to 7.3.2
* macOS versions prior to Big Sur 11.2.3
* iOS versions prior to 14.4.1
* iPadOS versions prior to 14.4.1
* Safari versions prior to 14.0.3
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
TECHNICAL SUMMARY:
A vulnerability has been discovered in Apple products, which could allow for arbitrary code execution. This vulnerability occurs when processing a specially crafted web content due to a memory corruption issue.
Successful exploitation of this vulnerability 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 permission associated with the application running the exploit, an attacker could then install programs; view, change, or delete data.
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 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/HT212220
https://support.apple.com/en-us/HT212221
https://support.apple.com/en-us/HT212222
https://support.apple.com/en-us/HT212223
CVE:
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1844
24x7 Security Operations Center
Multi-State Information Sharing and Analysis Center (MS-ISAC)
Elections Infrastructure Information Sharing and Analysis Center (EI-ISAC)
31 Tech Valley Drive
East Greenbush, NY 12061
SOC at cisecurity.org<mailto:SOC at cisecurity.org> - 1-866-787-4722
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TLP: WHITE
Disclosure is not limited. Subject to standard copyright rules, TLP: WHITE information may be distributed without restriction.
http://www.us-cert.gov/tlp/
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