An issue was discovered in certain Apple products. iOS before 11.4 is affected. Safari before 11.1.1 is affected. iCloud before 7.5 on Windows is affected. iTunes before 12.7.5 on Windows is affected. tvOS before 11.4 is affected. watchOS before 4.3.1 is affected. The issue involves the "WebKit" component. It allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site that triggers an @generatorState use-after-free.
The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.
| Link | Tags |
|---|---|
| https://support.apple.com/HT208850 | vendor advisory |
| https://www.exploit-db.com/exploits/44861/ | exploit vdb entry third party advisory |
| https://support.apple.com/HT208853 | vendor advisory |
| https://support.apple.com/HT208851 | vendor advisory |
| https://security.gentoo.org/glsa/201808-04 | third party advisory vendor advisory |
| https://support.apple.com/HT208854 | vendor advisory |
| http://www.securitytracker.com/id/1041029 | vdb entry third party advisory |
| https://usn.ubuntu.com/3687-1/ | third party advisory vendor advisory |
| https://support.apple.com/HT208848 | vendor advisory |
| https://bugs.chromium.org/p/project-zero/issues/detail?id=1553 | issue tracking exploit third party advisory |
| https://support.apple.com/HT208852 | vendor advisory |