Apple macOS Audio out-of-bounds write

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
7.6	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Apple macOS. It has been rated as critical. Impacted is an unknown function of the component Audio. The manipulation leads to out-of-bounds write. This vulnerability is traded as CVE-2022-32820. An attack has to be approached locally. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple macOS (Operating System) (version unknown). This issue affects an unknown function of the component Audio. The manipulation with an unknown input leads to a out-of-bounds write vulnerability. Using CWE to declare the problem leads to CWE-787. The product writes data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

An out-of-bounds write issue was addressed with improved input validation. This issue is fixed in iOS 15.6 and iPadOS 15.6, macOS Big Sur 11.6.8, watchOS 8.7, tvOS 15.6, macOS Monterey 12.5, Security Update 2022-005 Catalina. An app may be able to execute arbitrary code with kernel privileges.

The weakness was shared 07/20/2022 as HT213345 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2022-32820. Neither technical details nor an exploit are publicly available. The advisory points out:

An app may be able to execute arbitrary code with kernel privileges

Upgrading eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

An out-of-bounds write issue was addressed with improved input validation.

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Productinfo

Type

Operating System

Vendor

Apple

Name

macOS

License

commercial

Website

Vendor: https://www.apple.com/

CPE 2.3info

🔍

CPE 2.2info

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CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.6

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CVSSv2info

AV	AC	Au	C	I	A
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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds write
CWE: CWE-787 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔍
0-Day Time: 🔍
Exposure Time: 🔍

Timelineinfo

06/09/2022 🔍
07/20/2022 +41 days 🔍
07/20/2022 +0 days 🔍
07/22/2022 +2 days 🔍
05/23/2025 +1036 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213345
Status: Confirmed

CVE: CVE-2022-32820 (🔍)
GCVE (CVE): GCVE-0-2022-32820
GCVE (VulDB): GCVE-100-204869
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 07/22/2022 11:24
Updated: 05/23/2025 04:49
Changes: 07/22/2022 11:24 (8), 07/22/2022 11:25 (8), 07/22/2022 11:28 (28), 08/20/2022 08:46 (1), 05/23/2025 04:49 (26)
Complete: 🔍
Cache ID: 216::103