CVE-2020-9991

Apple Security Advisory 2020-11-13-3

Severity Score

7.5

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

*SSVC

Descriptions

This issue was addressed with improved checks. This issue is fixed in macOS Big Sur 11.0.1, watchOS 7.0, iOS 14.0 and iPadOS 14.0, iCloud for Windows 7.21, tvOS 14.0. A remote attacker may be able to cause a denial of service.

Este problema se abordó con comprobaciones mejoradas. Este problema se corrigió en macOS Big Sur versión 11.0.1, watchOS versión 7.0, iOS versión 14.0 y iPadOS versión 14.0, iCloud para Windows versión 7.21, tvOS versión 14.0. Un atacante remoto puede ser capaz de causar una denegación de servicio

macOS Big Sur 11.0.1 addresses buffer overflow, bypass, code execution, denial of service, information leakage, integer overflow, out of bounds read, out of bounds write, path sanitization, spoofing, and use-after-free vulnerabilities.

*Credits: N/A

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

None

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

None

Integrity

None

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2020-03-02 CVE Reserved
2020-11-13 CVE Published
2024-08-04 CVE Updated
2025-03-30 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (8)

URL	Tag	Source
http://seclists.org/fulldisclosure/2020/Dec/32	Mailing List
https://lists.apache.org/thread.html/rf9fa47ab66495c78bb4120b0754dd9531ca2ff0430f6685ac9b07772%40%3Cdev.mina.apache.org%3E	Mailing List

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/HT211843	2023-11-07
https://support.apple.com/en-us/HT211844	2023-11-07
https://support.apple.com/en-us/HT211847	2023-11-07
https://support.apple.com/en-us/HT211850	2023-11-07
https://support.apple.com/en-us/HT211931	2023-11-07
https://support.apple.com/kb/HT211846	2023-11-07

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Icloud Search vendor "Apple" for product "Icloud"				< 7.21 Search vendor "Apple" for product "Icloud" and version " < 7.21"		windows		Affected
Apple Search vendor "Apple"		Icloud Search vendor "Apple" for product "Icloud"				>= 11.0 < 11.4 Search vendor "Apple" for product "Icloud" and version " >= 11.0 < 11.4"		windows		Affected
Apple Search vendor "Apple"		Ipados Search vendor "Apple" for product "Ipados"				< 14.0 Search vendor "Apple" for product "Ipados" and version " < 14.0"		-		Affected
Apple Search vendor "Apple"		Iphone Os Search vendor "Apple" for product "Iphone Os"				< 14.0 Search vendor "Apple" for product "Iphone Os" and version " < 14.0"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				< 11.0.1 Search vendor "Apple" for product "Mac Os X" and version " < 11.0.1"		-		Affected
Apple Search vendor "Apple"		Tvos Search vendor "Apple" for product "Tvos"				< 14.0 Search vendor "Apple" for product "Tvos" and version " < 14.0"		-		Affected
Apple Search vendor "Apple"		Watchos Search vendor "Apple" for product "Watchos"				< 7.0 Search vendor "Apple" for product "Watchos" and version " < 7.0"		-		Affected