Apple watchOS IOMobileFrameBuffer memory corruption

CVSS Meta Temp Score
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CTI Interest Score
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7.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Apple watchOS. It has been declared as critical. This affects an unknown function of the component IOMobileFrameBuffer. Such manipulation leads to memory corruption. This vulnerability is referenced as CVE-2021-30807. The attack can only be performed from a local environment. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in Apple watchOS (Smartwatch Operating System) (version now known). Affected by this issue is some unknown processing of the component IOMobileFrameBuffer. The manipulation with an unknown input leads to a memory corruption vulnerability. Using CWE to declare the problem leads to CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. Impacted is confidentiality, integrity, and availability.

The weakness was published 07/26/2021 as confirmed advisory (Website). This vulnerability is handled as CVE-2021-30807 since 04/13/2021. The exploitation is known to be easy. Local access is required to approach this attack. Required for exploitation is a simple authentication. Technical details are unknown but a public exploit is available.

A public exploit has been developed by Saar Amar in Objective-C and been published immediately after the advisory. The exploit is available at saaramar.github.io. It is declared as attacked. This issue was added on 11/03/2021 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 11/17/2021:

Apply updates per vendor instructions.

Upgrading 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 Zero-Day.cz (654). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.8
VulDB Meta Temp Score: 7.7

VulDB Base Score: 7.8
VulDB Temp Score: 7.5
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: Memory corruption
CWE: CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Yes

Availability: 🔍
Access: Public
Status: Attacked
Author: Saar Amar
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

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

Price Prediction: 🔍
Current Price Estimation: 🔍

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Zero-Day.cz: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Timelineinfo

04/13/2021 🔍
07/26/2021 +104 days 🔍
07/26/2021 +0 days 🔍
07/26/2021 +0 days 🔍
10/19/2021 +85 days 🔍
01/30/2025 +1199 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: support.apple.com
Status: Confirmed

CVE: CVE-2021-30807 (🔍)
GCVE (CVE): GCVE-0-2021-30807
GCVE (VulDB): GCVE-100-184610
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/19/2021 18:29
Updated: 01/30/2025 02:49
Changes: 10/19/2021 18:29 (40), 10/23/2021 01:17 (10), 10/23/2021 01:25 (17), 04/21/2024 17:32 (23), 06/25/2024 18:00 (2), 09/15/2024 00:30 (1), 01/30/2025 02:49 (11)
Complete: 🔍
Cache ID: 216::103

If you want to get best quality of vulnerability data, you may have to visit VulDB.

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