An issue was discovered in certain Apple products. iOS before 11.2.6 is affected. macOS before 10.13.3 Supplemental Update is affected. tvOS before 11.2.6 is affected. watchOS before 4.2.3 is affected. The issue involves the "CoreText" component. It allows remote attackers to cause a denial of service (memory corruption and system crash) or possibly have unspecified other impact via a crafted string containing a certain Telugu character.
The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
| Link | Tags |
|---|---|
| https://support.apple.com/HT208534 | vendor advisory |
| https://support.apple.com/HT208537 | vendor advisory |
| https://support.apple.com/HT208535 | vendor advisory |
| http://www.securitytracker.com/id/1040396 | vdb entry third party advisory |
| https://nakedsecurity.sophos.com/2018/02/20/apple-fixes-that-1-character-to-crash-your-mac-and-iphone-bug/ | third party advisory |
| https://support.apple.com/HT208536 | vendor advisory |