An integer overflow was addressed through improved input validation. This issue is fixed in iOS 13.6 and iPadOS 13.6, macOS Catalina 10.15.6, tvOS 13.4.8, watchOS 6.2.8, iTunes 12.10.8 for Windows, iCloud for Windows 11.3, iCloud for Windows 7.20. Processing a maliciously crafted image 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/kb/HT211289 | vendor advisory |
| https://support.apple.com/kb/HT211288 | vendor advisory |
| https://support.apple.com/kb/HT211290 | vendor advisory |
| https://support.apple.com/kb/HT211291 | vendor advisory |
| https://support.apple.com/kb/HT211293 | vendor advisory |
| https://support.apple.com/kb/HT211294 | vendor advisory |
| https://support.apple.com/kb/HT211295 | vendor advisory |