A buffer overflow issue was addressed with improved memory handling. 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.
http://seclists.org/fulldisclosure/2020/Dec/32
https://support.apple.com/kb/HT211288
https://support.apple.com/kb/HT211289
https://support.apple.com/kb/HT211290
https://support.apple.com/kb/HT211291
https://support.apple.com/kb/HT211293
https://support.apple.com/kb/HT211294
https://support.apple.com/kb/HT211295
Source: MITRE
Published: 2020-10-22
Updated: 2020-12-15
Type: CWE-120
Base Score: 6.8
Vector: AV:N/AC:M/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 8.6
Severity: MEDIUM
Base Score: 7.8
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 1.8
Severity: HIGH