Apple tvOS Kernel memory corruption

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CVSS Meta Temp Score
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CTI Interest Score
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8.4$0-$5k0.13

A vulnerability was found in Apple tvOS (Digital Media Player) (unknown version) and classified as very critical. This issue affects an unknown code block of the component Kernel. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Multiple memory corruption issues were addressed with improved input validation. This issue is fixed in macOS Big Sur 11.0.1, tvOS 14.0, macOS Big Sur 11.1, Security Update 2020-001 Catalina, Security Update 2020-007 Mojave, watchOS 7.0, iOS 14.0 and iPadOS 14.0. A remote attacker may be able to cause unexpected system termination or corrupt kernel memory.

The weakness was disclosed 12/14/2020 by Alex Plaskett as confirmed advisory (Website). The identification of this vulnerability is CVE-2020-9967 since 03/02/2020. The attack may be initiated remotely. The requirement for exploitation is a simple authentication. 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 04/08/2021).

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

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VulDB Meta Base Score: 8.8
VulDB Meta Temp Score: 8.4

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

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

Exploitinginfoedit

Class: Memory corruption
CWE: CWE-119
ATT&CK: Unknown

Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

Price Prediction: 🔍
Current Price Estimation: 🔒

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Countermeasuresinfoedit

Recommended: Upgrade
Status: 🔍

Reaction Time: 🔒
0-Day Time: 🔒
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Timelineinfoedit

03/02/2020 CVE assigned
12/14/2020 +287 days Advisory disclosed
12/14/2020 +0 days Countermeasure disclosed
04/03/2021 +110 days VulDB entry created
04/08/2021 +5 days VulDB last update

Sourcesinfoedit

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

Researcher: Alex Plaskett
Status: Confirmed

CVE: CVE-2020-9967 (🔒)

Entryinfoedit

Created: 04/03/2021 11:16 AM
Updated: 04/08/2021 04:57 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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