http://www.zdnet.com/article/apple-fixes-security-bugs-in-ios-9-1-kills-jailbreak/
By Zack Whittaker
Zero Day
ZDNet.com
October 21, 2015
Apple has fixed 49 separate security vulnerabilities in iOS 9.1.
The company, which released the software on Wednesday for iPhones and
iPads, detailed the flaws in its updated security documentation.
Two of the fixes were credited to PanguTeam, a well-known jailbreak team
based out of China, which earlier this month released the first jailbreak
tool for devices running iOS 9.
Jailbreaking (similar to "rooting" for Android phones) allows a user to
gain access to more features on a iPhone or iPad, but it comes with
additional security risks. It's not illegal but it will void a user's
warranty.
Apple said a heap based buffer overflow issue could allow a malicious app
"to elevate privileges," similar to how jailbreaking works.Another flaw
allows a malicious app to exploit a memory corruption issue to "execute
arbitrary code with kernel privileges," which Apple said it fixed this
flaw with improved memory handling.
[...]
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