CVE-2020-9999

HIGH

iCloud < 11.5.0 - Out-of-bounds Write via Maliciously Crafted Text File

Title source: llm
STIX 2.1

Description

A memory corruption issue was addressed with improved state management. This issue is fixed in macOS Big Sur 11.0.1, iTunes for Windows 12.10.9. Processing a maliciously crafted text file may lead to arbitrary code execution.

References (7)

Core 7
Core References
Vendor Advisory x_refsource_confirm
https://support.apple.com/kb/HT211843
Vendor Advisory x_refsource_confirm
https://support.apple.com/kb/HT211850
Vendor Advisory x_refsource_confirm
https://support.apple.com/kb/HT211844
Vendor Advisory x_refsource_confirm
https://support.apple.com/kb/HT211935
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT211931
Vendor Advisory x_refsource_misc
https://support.apple.com/en-us/HT211952
Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2020/Dec/32

Scores

CVSS v3 7.8
EPSS 0.0849
EPSS Percentile 94.4%
Attack Vector LOCAL
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Details

CWE
CWE-787
Status published
Products (7)
apple/icloud < 11.5.0
apple/ipados < 14.0
apple/iphone_os < 14.0
apple/itunes < 12.10.9
apple/mac_os_x < 11.0.1
apple/tvos < 14.0
apple/watchos < 7.0
Published Dec 08, 2020
Tracked Since Feb 18, 2026