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APPLE-SA-2015-04-08-5 Xcode 6.3

Xcode 6.3 is now available and addresses the following:

Clang
Available for:  OS X Mavericks v10.9.4 or later
Impact:  An attacker may be able to bypass stack guards
Description:  A register allocation issue existed in clang which
sometimes led to stack cookie pointers being stored on the stack
itself. This issue was addressed with improved register allocation.

Swift
Available for:  OS X Mavericks v10.9.4 or later
Impact:  Swift programs performing certain type conversions may
receive unexpected values
Description:  A integer overflow issue existed in the simulator that
could lead to conversions returning unexpected values. This issue was
addressed by using improved checks.
CVE-ID
CVE-2015-1149


Xcode 6.3 may be obtained from:
https://developer.apple.com/xcode/downloads/

To check that the Xcode has been updated:

* Select Xcode in the menu bar
* Select About Xcode
* The version after applying this update will be "6.3".

Information will also be posted to the Apple Security Updates
web site: https://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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