For the protection of our customers, Apple does not disclose, discuss, or confirm security issues until a full investigation has occurred and any necessary patches or releases are available. To learn more about Apple Product Security, see the Apple Product Security website.
For information about the Apple Product Security PGP Key, see How to use the Apple Product Security PGP Key.
Where possible, CVE IDs are used to reference the vulnerabilities for further information.
To learn about other security updates, see Apple security updates.
iBooks Author 2.4.1
iBooks Author
Available for: OS X Yosemite v10.10 or later
Impact: Parsing a maliciously crafted iBooks Author file may lead to disclosure of user information
Description: An XML external entity reference issue existed with iBook Author parsing. This issue was addressed through improved parsing.
CVE-ID
CVE-2016-1789 : Behrouz Sadeghipour (@Nahamsec) and Patrik Fehrenbach (@ITSecurityguard)