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Category:   OS (Other)  >   Apple iOS Vendors:   Apple
(Apple Issues Fix for Apple iOS) Apple macOS/OS X LinkPresentation and Crash Reporter Bugs Let Remote Users Spoof the User Interface and Local Users Gain Elevated Privileges
SecurityTracker Alert ID:  1040746
SecurityTracker URL:  http://securitytracker.com/id/1040746
CVE Reference:   CVE-2018-4187, CVE-2018-4206, CVE-2018-8897   (Links to External Site)
Date:  Apr 24 2018
Impact:   Execution of arbitrary code via local system, Modification of system information, Root access via local system
Fix Available:  Yes  Vendor Confirmed:  Yes  

Description:   Two vulnerabilities were reported in Apple macOS/OS X. A local user can obtain elevated privileges on the target system. A remote user can spoof the user interface. Apple iOS is affected.

A remote user can send a specially crafted text message trigger a input validation flaw in the LinkPresentation component and spoof the user interface [CVE-2018-4187].

An application can trigger a memory corruption error in the Crash Reporter component to gain elevated privileges [CVE-2018-4206].

The system does not properly handle debug exceptions delivered after a stack switch operation via mov SS or pop SS instructions. During the stack switch operation, the exceptions are deferred. As a result, a local user can gain elevated privileges on the target system [CVE-2018-8897].

Ian Beer of Google Project Zero, Zhiyang Zeng (@Wester) of Tencent Security Platform Department, Nick Peterson, Everdox Tech LLC, Andy Lutomirski, and Roman Mueller (@faker_) reported these vulnerabilities.

Impact:   A local user can obtain elevated privileges on the target system.

A remote user can spoof the user interace.

Solution:   Apple has issued a fix for Apple iOS (11.3.1).

The Apple advisory is available at:

https://support.apple.com/en-us/HT208743

Vendor URL:  support.apple.com/en-us/HT208743 (Links to External Site)
Cause:   Access control error, Input validation error, State error

Message History:   This archive entry is a follow-up to the message listed below.
Apr 24 2018 Apple macOS/OS X LinkPresentation, Crash Reporter, and Kernel Bugs Let Remote Users Spoof the User Interface and Local Users Gain Elevated Privileges



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