CVE-2021-30787

Apple macOS process_token_BindQueryStoreRegisterToMemoryList Out-Of-Bounds Write Privilege Escalation Vulnerability

Severity Score

7.8

*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 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. An application may be able to cause unexpected system termination or write kernel memory.

Este problema se corrigió con comprobaciones mejoradas. Este problema se corrigió en macOS Big Sur versión 11.5, Security Update 2021-004 Catalina, Security Update 2021-005 Mojave. Una aplicación puede causar una terminación inesperada del sistema o escribir en la memoria del kernel

This vulnerability allows local attackers to escalate privileges on affected installations of Apple macOS. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within the AppleIntelKBLGraphics kext. The issue results from the lack of proper validation of user-supplied data, which can result in a write past the end of an allocated data structure. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of the kernel.

*Credits: Anonymous

CVSS Scores

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Medium

Authentication

None

Confidentiality

Partial

Integrity

Partial

Availability

Partial

* Common Vulnerability Scoring System

SSVC

Decision:-

Exploitation

Automatable

Tech. Impact

* Organization's Worst-case Scenario

Timeline

2021-04-13 CVE Reserved
2021-07-23 CVE Published
2024-08-03 CVE Updated
2024-08-27 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date
---------- First Exploit

CWE

CAPEC

References (3)

URL	Tag	Source

URL	Date	SRC

URL	Date	SRC

URL	Date	SRC
https://support.apple.com/en-us/HT212600	2021-09-15
https://support.apple.com/en-us/HT212602	2021-09-15
https://support.apple.com/en-us/HT212603	2021-09-15

Affected Vendors, Products, and Versions

Vendor		Product				Version		Other		Status
Vendor	Product	Version	Other	Status	<-- -->	Vendor	Product	Version	Other	Status
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				>= 10.14 <= 10.14.5 Search vendor "Apple" for product "Mac Os X" and version " >= 10.14 <= 10.14.5"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				>= 10.15 <= 10.15.6 Search vendor "Apple" for product "Mac Os X" and version " >= 10.15 <= 10.15.6"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2019-001		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2019-002		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2019-004		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2019-005		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2019-006		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2019-007		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2020-001		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2020-002		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2020-003		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2020-004		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2020-005		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2020-006		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2020-007		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2021-001		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2021-002		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2021-003		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		security_update_2021-004		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		supplemental_update		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.14.6 Search vendor "Apple" for product "Mac Os X" and version "10.14.6"		supplemental_update_2		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		-		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2020		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2020-001		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2020-005		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2020-007		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-001		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-002		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		security_update_2021-003		Affected
Apple Search vendor "Apple"		Mac Os X Search vendor "Apple" for product "Mac Os X"				10.15.7 Search vendor "Apple" for product "Mac Os X" and version "10.15.7"		supplemental_update		Affected
Apple Search vendor "Apple"		Macos Search vendor "Apple" for product "Macos"				>= 11.0 < 11.5 Search vendor "Apple" for product "Macos" and version " >= 11.0 < 11.5"		-		Affected