Summary: In addition to Mavericks 10.9.5, the company released updates for earlier OS X versions, multiple new versions of Safari, and patches for Xcode, OS X Server and Apple TV.
In addition to the large list of vulnerabilities fixed in iOS 8, Apple has released new versions of many other products to fix many other vulnerabilities.
iOS 8 fixed 53 vulnerabilities in earlier versions. The other new versions — OS X Mavericks 10.9.5; Security Update 2014-004; Safari 6.1.6, 7.0.6, 6.2 and 7.2; Xcode 6.0.1; OS X Server 2.2.3 and 3.2.1; and Apple TV 7 — fix another 53.
Many of the fixes in OS X Mavericks 10.9.5 and Security Update 2014-004 are problems with common open source programs which the average user might not use. Among these are Apache mod_php, Ruby and QT Media Foundation. But several are serious, especially the bugs in the Intel Graphics Driver, IOAcceleratorFamily and Libnotify, one of which allows a malicious application to execute arbitrary code with root privileges. This is a very critical update for Mac users. All of the bugs fixed in Apple TV were among those fixed in OS X.
Apple adds that the new version of Mavericks "[f]ixes an issue with group membership in large network groups, that also might prevent administrators from performing some administrative tasks successfully" and "[a]llows for faster authentication when roaming on 802.1x networks which use EAP-TLS." Mavericks 10.9.5 also includes Safari 7.0.6, about which more below.
Nearly all the flaws fixed in Safari 6.1.6, 6.2, 7.0.6 and 7.2 are memory corruption bugs in the WebKit browser engine which could allow remote code execution. The others are information disclosure bugs. XCode 6.0.1 stops a potential crash bug in Apache Subversion, a revision control system.
As with the iOS 8 fixes, Ian Beer of Google Project Zero was the greatest contributor to these security disclosures.
Reference :- https://bitly.com/1qigtsS