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Category:   OS (UNIX)  >   Apple macOS/OS X Vendors:   Apple
Apple macOS/OS X Character Processing Flaw in CoreText Lets Remote Users Cause the Target Service to Crash
SecurityTracker Alert ID:  1040396
SecurityTracker URL:  http://securitytracker.com/id/1040396
CVE Reference:   CVE-2018-4124   (Links to External Site)
Date:  Feb 20 2018
Impact:   Denial of service via network
Fix Available:  Yes  Vendor Confirmed:  Yes  Exploit Included:  Yes  
Version(s): 10.13.3
Description:   A vulnerability was reported in Apple macOS/OS X. A remote user can cause the target service to crash.

A remote user can send a specially crafted Telugu character in a message to trigger a memory corruption error in the CoreText component and cause the target application to crash.

An anonymous researcher reported this vulnerability.

Impact:   A remote user can cause the target service or application to crash.
Solution:   The vendor has issued a fix (10.13.3 Supplemental Update).

The vendor advisory is available at:

https://support.apple.com/en-us/HT208535

Vendor URL:  support.apple.com/en-us/HT208535 (Links to External Site)
Cause:   Access control error, Input validation error

Message History:   This archive entry has one or more follow-up message(s) listed below.
Feb 20 2018 (Apple Issues Fix for Apple iOS) Apple macOS/OS X Character Processing Flaw in CoreText Lets Remote Users Cause the Target Service to Crash
Apple has issued a fix for Apple iOS.
Feb 20 2018 (Apple Issues Fix for Apple TV) Apple macOS/OS X Character Processing Flaw in CoreText Lets Remote Users Cause the Target Service to Crash
Apple has issued a fix for Apple TV.
Feb 20 2018 (Apple Issues Fix for Apple Watch) Apple macOS/OS X Character Processing Flaw in CoreText Lets Remote Users Cause the Target Service to Crash
Apple has issued a fix for Apple Watch.



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