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===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2017.2521
     APPLE-SA-2017-10-05-1 macOS High Sierra 10.13 Supplemental Update
                              6 October 2017

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

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

Product:           Apple StorageKit
                   Apple Security
Publisher:         Apple
Operating System:  Mac OS High Sierra 10.13
Impact/Access:     Access Privileged Data -- Remote with User Interaction
                   Unauthorised Access    -- Existing Account            
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-7150 CVE-2017-7149 

Original Bulletin: 
   https://support.apple.com/kb/HT201222

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APPLE-SA-2017-10-05-1 macOS High Sierra 10.13 Supplemental Update

macOS High Sierra 10.13 Supplemental Update is now available
and addresses the following:

StorageKit
Available for: macOS High Sierra 10.13
Impact: A local attacker may gain access to an encrypted APFS volume
Description: If a hint was set in Disk Utility when creating an APFS
encrypted volume, the password was stored as the hint. This was 
addressed by clearing hint storage if the hint was the password, and 
by improving the logic for storing hints.
CVE-2017-7149: Matheus Mariano of Leet Tech

Security
Available for: macOS High Sierra 10.13
Impact: A malicious application can extract keychain passwords
Description: A method existed for applications to bypass the
keychain access prompt with a synthetic click. This was addressed by
requiring the user password when prompting for keychain access.
CVE-2017-7150: Patrick Wardle of Synack

New downloads of macOS High Sierra 10.13 include the security
content of the macOS High Sierra 10.13 Supplemental Update.

Installation note:

macOS High Sierra 10.13 Supplemental Update may be obtained from the
Mac App Store or Apple's Software Downloads web site:
https://www.apple.com/support/downloads/

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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===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

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