Apple watchOS up to 8.8.0/9.5.1 Kernel integer overflow

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

Summaryinfo

A vulnerability has been found in Apple watchOS up to 8.8.0/9.5.1 and classified as critical. This affects an unknown part of the component Kernel. Performing a manipulation results in integer overflow. This vulnerability is cataloged as CVE-2023-32434. The attack must be initiated from a local position. Furthermore, there is an exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Apple watchOS up to 8.8.0/9.5.1 (Smartwatch Operating System). It has been classified as critical. This affects an unknown part of the component Kernel. The manipulation with an unknown input leads to a integer overflow vulnerability. CWE is classifying the issue as CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. This is going to have an impact on confidentiality, integrity, and availability.

The weakness was shared 06/21/2023 as HT213808/HT213812 as advisory (Website). It is possible to read the advisory at support.apple.com. This vulnerability is uniquely identified as CVE-2023-32434. The exploitability is told to be easy. Attacking locally is a requirement. Technical details are unknown but an exploit is available. The advisory points out:

An app may be able to execute arbitrary code with kernel privileges. Apple is aware of a report that this issue may have been actively exploited against versions of iOS released before iOS 15.7.

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 06/23/2023 with a due date of 07/14/2023:

Apply updates per vendor instructions.

Upgrading to version 8.8.1 or 9.5.2 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

An integer overflow was addressed with improved input validation.

The vulnerability is also documented in the vulnerability database at Zero-Day.cz (781). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔍
ATT&CK: 🔍

Physical: Partially
Local: Yes
Remote: Partially

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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Zero-Day.cz: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: watchOS 8.8.1/9.5.2

Timelineinfo

05/08/2023 🔍
06/21/2023 +44 days 🔍
06/21/2023 +0 days 🔍
06/22/2023 +1 days 🔍
02/03/2025 +592 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213808/HT213812
Status: Confirmed

CVE: CVE-2023-32434 (🔍)
GCVE (CVE): GCVE-0-2023-32434
GCVE (VulDB): GCVE-100-232179
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 06/22/2023 21:48
Updated: 02/03/2025 23:43
Changes: 06/22/2023 21:48 (2), 06/22/2023 21:49 (12), 06/22/2023 21:53 (13), 06/22/2023 21:55 (29), 07/17/2023 09:59 (2), 07/17/2023 10:02 (10), 04/28/2024 21:19 (26), 06/10/2024 13:40 (3), 09/09/2024 22:30 (1), 02/03/2025 23:43 (10)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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