IOMobileFrameBuffer in Apple iOS Could Allow For Arbitrary Code Execution

ITS Advisory Number: 
2016-138
Date(s) Issued: 
Tuesday, August 23, 2016
Subject: 
IOMobileFrameBuffer in Apple iOS Could Allow For Arbitrary Code Execution
Overview: 

A vulnerability was discovered in IOMobile FrameBuffer affecting iPhone 4s, iPads, and iPod touch (5th generation) the most severe of which could allow for arbitrary code execution. Apple iOS is an operating system for iPhone, iPod touch, and iPad. Depending on the privileges associated with the user, a successful exploitation of this vulnerability could allow an attacker to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

 

Systems Affected: 
  • iOS prior to 9.3.4

    • iPhone 4s and later

    • iPod touch (5th generation) and later

    • iPad 2 and later

 

RISK
GOVERNMENT
Large and medium government entities: 
High
Small government entities: 
Medium
BUSINESS
Large and medium business entities: 
High
Small business entities: 
Medium
Home Users: 
Medium
Description: 

Apple has released a patch for a vulnerability that have been discovered in IOMobile FrameBuffer affecting iPhone 4s, iPads, and iPod touch (5th generation) the most severe of which could allow for arbitrary code execution. Details are as follows:

  • An application may be able to execute arbitrary code with kernel privileges (CVE-2016-4654)

 

Depending on the privileges associated with the user, a successful exploitation of this vulnerability could allow an attacker to execute arbitrary code in a privileged context or cause a denial of service (memory corruption) via a crafted app.

Actions: 
  • Apply applicable updates provided by Apple to vulnerable systems
  • Run all software as a non-privileged user to diminish the effects of a successful attack.
  • Remind users not to download, accept, or execute files from un-trusted or unknown sources.
  • Remind users not to visit un-trusted websites or follow links provided by unknown or un-trusted sources.
References: 

https://support.apple.com/en-us/HT207026

 

CVE:

Link not available