CVE-2020-9876

HIGH

iCloud < 7.20 - Out-of-bounds Write via Maliciously Crafted PDF File

Title source: llm
STIX 2.1

Description

An out-of-bounds write issue was addressed with improved bounds checking. 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. Opening a maliciously crafted PDF file may lead to an unexpected application termination or arbitrary code execution.

References (17)

Core 17
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_misc
https://support.apple.com/kb/HT211289
Vendor Advisory x_refsource_misc
https://support.apple.com/kb/HT211288
Vendor Advisory x_refsource_misc
https://support.apple.com/kb/HT211290
Vendor Advisory x_refsource_misc
https://support.apple.com/kb/HT211291
Vendor Advisory x_refsource_misc
https://support.apple.com/kb/HT211293
Vendor Advisory x_refsource_misc
https://support.apple.com/kb/HT211294
Vendor Advisory x_refsource_misc
https://support.apple.com/kb/HT211295
Vendor Advisory x_refsource_confirm
https://support.apple.com/kb/HT211931
Vendor Advisory x_refsource_confirm
https://support.apple.com/kb/HT211952
Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2020/Nov/19
Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2020/Nov/20
Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2020/Nov/22
Vendor Advisory x_refsource_confirm
https://support.apple.com/kb/HT211935
Mailing List, Third Party Advisory mailing-list x_refsource_fulldisc
http://seclists.org/fulldisclosure/2020/Dec/32

Scores

CVSS v3 7.8
EPSS 0.0195
EPSS Percentile 77.8%
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 (10)
apple/icloud < 7.20
apple/ipados < 14.0
apple/iphone_os < 14.0
apple/itunes < 12.10.9
apple/mac_os_x 10.13.6 (13 CPE variants)
apple/mac_os_x 10.14.6 (10 CPE variants)
apple/mac_os_x 10.13 - 10.13.6
apple/macos 11.0 - 11.0.1
apple/tvos < 14.0
apple/watchos < 7.0
Published Oct 22, 2020
Tracked Since Feb 18, 2026