Apple tvOS XPC Service launchd access control

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CVSS Meta Temp Score
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CTI Interest Score
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7.0$0-$5k0.00

A vulnerability was found in Apple tvOS (Digital Media Player) (affected version not known). It has been rated as critical. Affected by this issue is an unknown functionality of the file launchd of the component XPC Service. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-264. Impacted is confidentiality, integrity, and availability. CVE summarizes:

A logic issue was addressed with improved validation. This issue is fixed in watchOS 7.0, tvOS 14.0, iOS 14.0 and iPadOS 14.0, macOS Big Sur 11.0.1. A malicious application may be able to elevate privileges.

The weakness was published 01/20/2021. The advisory is available at xlab.tencent.com. This vulnerability is handled as CVE-2020-9971 since 03/02/2020. The exploitation is known to be easy. Local access is required to approach this attack. The successful exploitation needs a simple authentication. Technical details as well as a public exploit are known. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

It is declared as proof-of-concept. The exploit is available at xlab.tencent.com.

Upgrading eliminates this vulnerability.

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CVSSv3infoedit

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.0

VulDB Base Score: 7.8
VulDB Temp Score: 7.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfoedit

Class: Privilege escalation
CWE: CWE-264
ATT&CK: T1068

Local: Yes
Remote: No

Availability: 🔒
Access: Public
Status: Proof-of-Concept
Download: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfoedit

Threat: 🔍
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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Timelineinfoedit

03/02/2020 CVE assigned
01/20/2021 +324 days Advisory disclosed
04/03/2021 +73 days VulDB entry created
04/08/2021 +5 days VulDB last update

Sourcesinfoedit

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

Advisory: xlab.tencent.com
Status: Confirmed

CVE: CVE-2020-9971 (🔒)
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfoedit

Created: 04/03/2021 11:17 AM
Updated: 04/08/2021 05:11 PM
Changes: (9) source_cve_nvd_summary software_type vulnerability_cvss2_vuldb_basescore vulnerability_cvss2_vuldb_tempscore vulnerability_cvss3_vuldb_basescore vulnerability_cvss3_vuldb_tempscore vulnerability_cvss3_meta_basescore vulnerability_cvss3_meta_tempscore exploit_price_0day
Complete: 🔍

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