2021-30796 | Apple macOS Model I/O denial of service (HT212602)


CVSS Meta Temp Score

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Current Exploit Price (≈)

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CTI Interest Score

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4.1 $0-$5k 0.10

A vulnerability classified as problematic was found in Apple macOS (Operating System) (affected version unknown). Affected by this vulnerability is some unknown functionality of the component Model I/O. The manipulation with an unknown input leads to a denial of service vulnerability. The CWE definition for the vulnerability is CWE-404. As an impact it is known to affect availability.

The weakness was disclosed 07/21/2021 by Mickey Jin as HT212602 as confirmed advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is known as CVE-2021-30796 since 04/13/2021. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn’t need any form of authentication. It demands that the victim is doing some kind of user interaction. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/28/2021). It is expected to see the exploit prices for this product increasing in the near future.The attack technique deployed by this issue is T1499 according to MITRE ATT&CK. The advisory points out:

Processing a maliciously crafted image may lead to a denial of service

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

A logic issue was addressed with improved validation.

Type

Vendor

Name

VulDB Meta Base Score: 4.3
VulDB Meta Temp Score: 4.1

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

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Vector Complexity Authentication Confidentiality Integrity Availability
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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍
Class: Denial of service
CWE: CWE-404
ATT&CK: T1499

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒


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Threat Intelligenceinfoedit

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍Recommended: Upgrade
Status: 🔍

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

Upgrade: support.apple.com

04/13/2021 CVE assigned
07/21/2021 +99 days Advisory disclosed
07/21/2021 +0 days Countermeasure disclosed
07/23/2021 +2 days VulDB entry created
07/28/2021 +5 days VulDB last updateVendor: https://www.apple.com/

Advisory: HT212602
Researcher: Mickey Jin
Status: Confirmed

CVE: CVE-2021-30796 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20180712

Created: 07/23/2021 10:27
Updated: 07/28/2021 11:37
Changes: (1) source_cve_assigned
Complete: 🔍

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