7.8
HIGH
CVE-2021-30916
Apple iOS/Catalina/Big Sur Kernel Memory Corruption Vulnerability
Description

A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to execute arbitrary code with kernel privileges.

INFO

Published Date :

Aug. 24, 2021, 7:15 p.m.

Last Modified :

Nov. 7, 2023, 3:33 a.m.

Remotely Exploitable :

No

Impact Score :

5.9

Exploitability Score :

1.8
Public PoC/Exploit Available at Github

CVE-2021-30916 has a 1 public PoC/Exploit available at Github. Go to the Public Exploits tab to see the list.

Affected Products

The following products are affected by CVE-2021-30916 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Apple macos
2 Apple mac_os_x
3 Apple iphone_os
4 Apple tvos
5 Apple watchos
6 Apple ipad_os
7 Apple ipados

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

My Personal Reading lists for CVE Writeups

Python

Updated: 4 months ago
30 stars 5 fork 5 watcher
Born at : April 15, 2021, 1:15 a.m. This repo has been linked 30 different CVEs too.

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2021-30916 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2021-30916 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • CVE Source Update by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Changed Source MITRE Apple Inc.
  • CVE Modified by [email protected]

    Nov. 07, 2023

    Action Type Old Value New Value
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212869 [No types assigned]
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212871 [No types assigned]
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212872 [No types assigned]
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212867 [No types assigned]
    Added Reference Apple Inc. https://support.apple.com/en-us/HT212868 [No types assigned]
    Added Reference Apple Inc. https://support.apple.com/kb/HT212975 [No types assigned]
    Added Reference Apple Inc. https://support.apple.com/kb/HT212980 [No types assigned]
    Added Reference Apple Inc. http://seclists.org/fulldisclosure/2021/Dec/43 [No types assigned]
    Added Reference Apple Inc. http://seclists.org/fulldisclosure/2021/Dec/44 [No types assigned]
    Removed Reference MITRE https://support.apple.com/en-us/HT212868
    Removed Reference MITRE https://support.apple.com/en-us/HT212869
    Removed Reference MITRE https://support.apple.com/en-us/HT212867
    Removed Reference MITRE https://support.apple.com/en-us/HT212871
    Removed Reference MITRE https://support.apple.com/en-us/HT212872
    Removed Reference MITRE https://support.apple.com/kb/HT212975
    Removed Reference MITRE https://support.apple.com/kb/HT212980
    Removed Reference MITRE http://seclists.org/fulldisclosure/2021/Dec/43
    Removed Reference MITRE http://seclists.org/fulldisclosure/2021/Dec/44
  • CPE Deprecation Remap by [email protected]

    Jan. 09, 2023

    Action Type Old Value New Value
    Changed CPE Configuration OR *cpe:2.3:o:apple:ipad_os:15.0:*:*:*:*:*:*:* OR *cpe:2.3:o:apple:ipados:15.0:*:*:*:*:*:*:*
  • Modified Analysis by [email protected]

    Apr. 01, 2022

    Action Type Old Value New Value
    Changed Reference Type http://seclists.org/fulldisclosure/2021/Dec/43 No Types Assigned http://seclists.org/fulldisclosure/2021/Dec/43 Mailing List, Third Party Advisory
    Changed Reference Type http://seclists.org/fulldisclosure/2021/Dec/44 No Types Assigned http://seclists.org/fulldisclosure/2021/Dec/44 Mailing List, Third Party Advisory
    Changed Reference Type https://support.apple.com/kb/HT212975 No Types Assigned https://support.apple.com/kb/HT212975 Vendor Advisory
    Changed Reference Type https://support.apple.com/kb/HT212980 No Types Assigned https://support.apple.com/kb/HT212980 Vendor Advisory
    Changed CPE Configuration OR *cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* versions up to (excluding) 14.8.1 *cpe:2.3:o:apple:ipad_os:15.0:*:*:*:*:*:*:* *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 14.8.1 *cpe:2.3:o:apple:iphone_os:15.0:*:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions up to (excluding) 10.15.7 *cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-005:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:* *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 11.0 up to (excluding) 11.6.1 *cpe:2.3:o:apple:macos:12.0:*:*:*:*:*:*:* OR *cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* versions up to (excluding) 14.8.1 *cpe:2.3:o:apple:ipad_os:15.0:*:*:*:*:*:*:* *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 14.8.1 *cpe:2.3:o:apple:iphone_os:15.0:*:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions up to (excluding) 10.15.7 *cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-005:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:* *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 11.0 up to (excluding) 11.6.1 *cpe:2.3:o:apple:macos:12.0:*:*:*:*:*:*:* *cpe:2.3:o:apple:tvos:*:*:*:*:*:*:*:* versions up to (excluding) 15.2 *cpe:2.3:o:apple:watchos:*:*:*:*:*:*:*:* versions up to (excluding) 8.3
  • CVE Modified by [email protected]

    Dec. 17, 2021

    Action Type Old Value New Value
    Added Reference http://seclists.org/fulldisclosure/2021/Dec/43 [No Types Assigned]
    Added Reference http://seclists.org/fulldisclosure/2021/Dec/44 [No Types Assigned]
  • CVE Modified by [email protected]

    Dec. 13, 2021

    Action Type Old Value New Value
    Added Reference https://support.apple.com/kb/HT212975 [No Types Assigned]
    Added Reference https://support.apple.com/kb/HT212980 [No Types Assigned]
  • Initial Analysis by [email protected]

    Nov. 01, 2021

    Action Type Old Value New Value
    Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism
    Added CVSS V2 NIST (AV:N/AC:M/Au:N/C:C/I:C/A:C)
    Added CVSS V3.1 NIST AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
    Changed Reference Type https://support.apple.com/en-us/HT212867 No Types Assigned https://support.apple.com/en-us/HT212867 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT212868 No Types Assigned https://support.apple.com/en-us/HT212868 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT212869 No Types Assigned https://support.apple.com/en-us/HT212869 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT212871 No Types Assigned https://support.apple.com/en-us/HT212871 Vendor Advisory
    Changed Reference Type https://support.apple.com/en-us/HT212872 No Types Assigned https://support.apple.com/en-us/HT212872 Vendor Advisory
    Added CWE NIST CWE-787
    Added CPE Configuration OR *cpe:2.3:o:apple:ipad_os:*:*:*:*:*:*:*:* versions up to (excluding) 14.8.1 *cpe:2.3:o:apple:ipad_os:15.0:*:*:*:*:*:*:* *cpe:2.3:o:apple:iphone_os:*:*:*:*:*:*:*:* versions up to (excluding) 14.8.1 *cpe:2.3:o:apple:iphone_os:15.0:*:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:*:*:*:*:*:*:*:* versions up to (excluding) 10.15.7 *cpe:2.3:o:apple:mac_os_x:10.15.7:-:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2020-001:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-001:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-002:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-003:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-004:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-005:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:security_update_2021-006:*:*:*:*:*:* *cpe:2.3:o:apple:mac_os_x:10.15.7:supplemental_update:*:*:*:*:*:* *cpe:2.3:o:apple:macos:*:*:*:*:*:*:*:* versions from (including) 11.0 up to (excluding) 11.6.1 *cpe:2.3:o:apple:macos:12.0:*:*:*:*:*:*:*
  • CVE Modified by [email protected]

    Oct. 28, 2021

    Action Type Old Value New Value
    Changed Description ** REJECT ** DO NOT USE THIS CANDIDATE NUMBER. ConsultIDs: none. Reason: This candidate was withdrawn by the CVE program. Notes: none. A memory corruption issue was addressed with improved memory handling. This issue is fixed in iOS 15.1 and iPadOS 15.1, macOS Monterey 12.0.1, iOS 14.8.1 and iPadOS 14.8.1, Security Update 2021-007 Catalina, macOS Big Sur 11.6.1. A malicious application may be able to execute arbitrary code with kernel privileges.
    Added Reference https://support.apple.com/en-us/HT212868 [No Types Assigned]
    Added Reference https://support.apple.com/en-us/HT212869 [No Types Assigned]
    Added Reference https://support.apple.com/en-us/HT212867 [No Types Assigned]
    Added Reference https://support.apple.com/en-us/HT212871 [No Types Assigned]
    Added Reference https://support.apple.com/en-us/HT212872 [No Types Assigned]
  • CVE Unrejected by [email protected]

    Oct. 28, 2021

    Action Type Old Value New Value
  • CVE Rejected by [email protected]

    Aug. 24, 2021

    Action Type Old Value New Value
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2021-30916 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2021-30916 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.14 }} 0.02%

score

0.49050

percentile

CVSS31 - Vulnerability Scoring System
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability