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APPLE-SA-2015-06-30-3 Mac EFI Security Update 2015-001

Mac EFI Security Update 2015-001 is now available and addresses the
following:

EFI
Available for:  OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5
Impact:  A malicious application with root privileges may be able to
modify EFI flash memory
Description:  An insufficient locking issue existed with EFI flash
when resuming from sleep states. This issue was addressed through
improved locking.
CVE-ID
CVE-2015-3692 : Trammell Hudson of Two Sigma Investments, Xeno Kovah
and Corey Kallenberg of LegbaCore LLC, Pedro Vilaca

EFI
Available for:  OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5
Impact:  A malicious application may induce memory corruption to
escalate privileges
Description:  A disturbance error, also known as Rowhammer, exists
with some DDR3 RAM that could have led to memory corruption. This
issue was mitigated by increasing memory refresh rates.
CVE-ID
CVE-2015-3693 : Mark Seaborn and Thomas Dullien of Google, working
from original research by Yoongu Kim et al (2014)


Mac EFI Security Update 2015-001 may be obtained from
the Mac App Store.

Information will also be posted to the Apple Security Updates
web site: http://support.apple.com/kb/HT1222

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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