Apple macOS up to 11.2.3 DiskArbitration permission

CVSS Meta Temp Score
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CTI Interest Score
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5.1$0-$5k0.00

A vulnerability has been found in Apple macOS up to 11.2.3 (Operating System) and classified as problematic. Affected by this vulnerability is an unknown code block of the component DiskArbitration. The manipulation with an unknown input leads to a permission vulnerability. The CWE definition for the vulnerability is CWE-275. As an impact it is known to affect confidentiality, integrity, and availability.

The weakness was presented 04/26/2021 as HT212325 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2021-1784. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1222 according to MITRE ATT&CK. The advisory points out:

A malicious application may be able to modify protected parts of the file system

Upgrading to version 11.3 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

A permissions issue existed in DiskArbitration. This was addressed with additional ownership checks.

Productinfo

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Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB CVSS-B Score: 🔍
VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv2info

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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Permission
CWE: CWE-275 / CWE-266
ATT&CK: T1222

Local: Yes
Remote: No

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: macOS 11.3

Timelineinfo

12/08/2020 🔍
04/26/2021 +138 days 🔍
04/26/2021 +0 days 🔍
04/27/2021 +1 days 🔍
04/30/2021 +3 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT212325
Status: Confirmed

CVE: CVE-2021-1784 (🔍)
scip Labs: https://www.scip.ch/en/?labs.20180712

Entryinfo

Created: 04/27/2021 08:54
Updated: 04/30/2021 14:56
Changes: 04/27/2021 08:54 (18), 04/27/2021 08:57 (28), 04/30/2021 14:56 (4)
Complete: 🔍

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