Apple macOS up to 12.3 AMD buffer overflow

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.
7.5	$0-$5k	0.00

A vulnerability classified as critical was found in Apple macOS up to 12.3 (Operating System). Affected by this vulnerability is some unknown functionality of the component AMD. The manipulation with an unknown input leads to a memory corruption vulnerability. The CWE definition for the vulnerability is CWE-120. The program copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

A buffer overflow issue was addressed with improved memory handling. This issue is fixed in macOS Monterey 12.4. An application may be able to execute arbitrary code with kernel privileges.

The weakness was published 05/16/2022 with ABC Research s.r.o as HT213257 as confirmed advisory (Website). The advisory is shared at support.apple.com. This vulnerability is known as CVE-2022-26741 since 03/08/2022. The exploitation appears to be easy. An attack has to be approached locally. A single authentication is required for exploitation. Neither technical details nor an exploit are publicly available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 05/28/2022). It is expected to see the exploit prices for this product increasing in the near future. The advisory points out:

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

Upgrading to version 12.4 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A buffer overflow issue was addressed with improved memory handling.

Productinfoedit

Type

Operating System

Vendor

Apple

Name

macOS

CPE 2.3infoedit

CPE 2.2infoedit

CVSSv3infoedit

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.5

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

CVSSv2infoedit

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-120
ATT&CK: Unknown

Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

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

Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
Exposure Time: 🔒

Upgrade: macOS 12.4

Timelineinfoedit

03/08/2022 CVE reserved
05/16/2022 +68 days Advisory disclosed
05/16/2022 +0 days Countermeasure disclosed
05/18/2022 +2 days VulDB entry created
05/28/2022 +10 days VulDB last update

Sourcesinfoedit

Vendor: apple.com

Advisory: HT213257
Organization: ABC Research s.r.o
Status: Confirmed

CVE: CVE-2022-26741 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfoedit

Created: 05/18/2022 07:08 AM
Updated: 05/28/2022 10:46 AM
Changes: (1) source_cve_nvd_summary
Complete: 🔍