Apple tvOS up to 13.4.5 Kernel Application resource consumption

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CTI Interest Score
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8.1$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple tvOS up to 13.4.5. It has been classified as critical. Affected by this issue is some unknown functionality of the component Kernel. The manipulation as part of Application leads to resource consumption. This vulnerability is referenced as CVE-2020-9859. The attack can only be performed from a local environment. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple tvOS up to 13.4.5 (Digital Media Player) and classified as critical. This issue affects an unknown code block of the component Kernel. The manipulation as part of a Application leads to a resource consumption vulnerability. Using CWE to declare the problem leads to CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

A memory consumption issue was addressed with improved memory handling. This issue is fixed in iOS 13.5.1 and iPadOS 13.5.1, macOS Catalina 10.15.5 Supplemental Update, tvOS 13.4.6, watchOS 6.2.6. An application may be able to execute arbitrary code with kernel privileges.

The weakness was published 06/01/2020 by unc0ver as HT211216 as confirmed advisory (Website). The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2020-9859 since 03/02/2020. An attack has to be approached locally. The requirement for exploitation is a simple authentication. Technical details are unknown but an exploit is available.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 11/03/2021 with a due date of 05/03/2022:

Apply updates per vendor instructions.

Upgrading to version 13.4.6 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2020-30638). Similar entries are available at VDB-156243, VDB-156244 and VDB-156246. If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.1
VulDB Meta Temp Score: 8.0

VulDB Base Score: 8.8
VulDB Temp Score: 8.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.8
NVD Vector: 🔍

CNA Base Score: 7.8
CNA Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: No

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

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: tvOS 13.4.6

Timelineinfo

03/02/2020 🔍
06/01/2020 +91 days 🔍
06/01/2020 +0 days 🔍
06/06/2020 +5 days 🔍
07/29/2025 +1879 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT211216
Researcher: unc0ver
Status: Confirmed

CVE: CVE-2020-9859 (🔍)
GCVE (CVE): GCVE-0-2020-9859
GCVE (VulDB): GCVE-100-156245
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013
See also: 🔍

Entryinfo

Created: 06/06/2020 09:18
Updated: 07/29/2025 04:48
Changes: 06/06/2020 09:18 (45), 06/06/2020 09:23 (18), 04/20/2024 11:21 (28), 09/10/2024 22:45 (2), 01/29/2025 20:46 (19), 07/29/2025 04:48 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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