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             AUSCERT External Security Bulletin Redistribution

                               ESB-2021.3159
                      APPLE-SA-2021-09-20-5 Safari 15
                             21 September 2021

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           Safari
Publisher:         Apple
Operating System:  Mac OS
Impact/Access:     Execute Arbitrary Code/Commands -- Remote with User Interaction
Resolution:        Patch/Upgrade
CVE Names:         CVE-2021-30851 CVE-2021-30849 CVE-2021-30848
                   CVE-2021-30846  

Original Bulletin: 
   https://support.apple.com/HT212816

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APPLE-SA-2021-09-20-5 Safari 15

Safari 15 addresses the following issues. Information about the
security content is also available at 
https://support.apple.com/HT212816.

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2021-30846: Sergei Glazunov of Google Project Zero

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to code
execution
Description: A memory corruption issue was addressed with improved
memory handling.
CVE-2021-30848: Sergei Glazunov of Google Project Zero

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to
arbitrary code execution
Description: Multiple memory corruption issues were addressed with
improved memory handling.
CVE-2021-30849: Sergei Glazunov of Google Project Zero

WebKit
Available for: macOS Big Sur and macOS Catalina
Impact: Processing maliciously crafted web content may lead to code
execution
Description: A memory corruption vulnerability was addressed with
improved locking.
CVE-2021-30851: Samuel Gro of Google Project Zero

Installation note:

This update may be obtained from the Mac App Store.

Information will also be posted to the Apple Security Updates
web site: https://support.apple.com/kb/HT201222

This message is signed with Apple's Product Security PGP key,
and details are available at:
https://www.apple.com/support/security/pgp/

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===========================================================================
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The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
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===========================================================================
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