Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.3, macOS Mojave 10.14.5, tvOS 12.3, watchOS 5.2.1, Safari 12.1.1, iTunes for Windows 12.9.5, iCloud for Windows 7.12. Processing maliciously crafted web content may lead to arbitrary code execution.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://support.apple.com/HT210118 | vendor advisory |
| https://support.apple.com/HT210119 | vendor advisory |
| https://support.apple.com/HT210120 | vendor advisory |
| https://support.apple.com/HT210123 | vendor advisory |
| https://support.apple.com/HT210124 | vendor advisory |
| https://support.apple.com/HT210125 | vendor advisory |
| https://support.apple.com/HT210212 | vendor advisory |
| https://support.apple.com/HT210122 | vendor advisory |