Apple tvOS up to 16.4.1 WebKit out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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5.7$0-$5k0.00

Summaryinfo

A vulnerability described as problematic has been identified in Apple tvOS up to 16.4.1. This affects an unknown function of the component WebKit. Such manipulation leads to out-of-bounds. This vulnerability is documented as CVE-2023-28204. The attack can be executed remotely. Additionally, an exploit exists. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Apple tvOS up to 16.4.1 (Digital Media Player). Affected by this issue is an unknown code block of the component WebKit. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is confidentiality. CVE summarizes:

An out-of-bounds read was addressed with improved input validation. This issue is fixed in watchOS 9.5, tvOS 16.5, macOS Ventura 13.4, iOS 15.7.6 and iPadOS 15.7.6, Safari 16.5, iOS 16.5 and iPadOS 16.5. Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been actively exploited.

The weakness was released 05/18/2023 as HT213761 as confirmed advisory (Website). The advisory is shared for download at support.apple.com. This vulnerability is handled as CVE-2023-28204. Successful exploitation requires user interaction by the victim. Technical details are unknown but an exploit is available. The advisory points out:

Processing web content may disclose sensitive information. Apple is aware of a report that this issue may have been actively exploited.

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 212173 (Apple Safari 16.5 Multiple Vulnerabilities (102735)), which helps to determine the existence of the flaw in a target environment. This issue was added on 05/22/2023 to the CISA Known Exploited Vulnerabilities Catalog with a due date of 06/12/2023:

Apply updates per vendor instructions.

Upgrading to version 16.5 eliminates this vulnerability. A possible mitigation has been published immediately after the disclosure of the vulnerability. The advisory contains the following remark:

An out-of-bounds read was addressed with improved input validation.

The vulnerability is also documented in the databases at Zero-Day.cz (768), Tenable (212173) and EUVD (EUVD-2023-31912). Once again VulDB remains the best source for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.8
VulDB Meta Temp Score: 5.7

VulDB Base Score: 4.3
VulDB Temp Score: 4.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

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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Nessus ID: 212173
Nessus Name: Apple Safari 16.5 Multiple Vulnerabilities (102735)

Zero-Day.cz: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

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

Upgrade: tvOS 16.5

Timelineinfo

03/13/2023 🔍
05/18/2023 +65 days 🔍
05/18/2023 +0 days 🔍
05/20/2023 +2 days 🔍
12/03/2025 +928 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: HT213761
Status: Confirmed

CVE: CVE-2023-28204 (🔍)
GCVE (CVE): GCVE-0-2023-28204
GCVE (VulDB): GCVE-100-229556
EUVD: 🔍
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 05/20/2023 08:23
Updated: 12/03/2025 17:02
Changes: 05/20/2023 08:23 (18), 05/20/2023 08:26 (27), 06/15/2023 09:00 (1), 04/28/2024 17:59 (26), 05/15/2024 17:15 (1), 06/12/2024 00:36 (2), 06/28/2024 02:28 (12), 09/09/2024 22:30 (2), 12/09/2024 18:44 (2), 02/03/2025 23:43 (11), 04/26/2025 15:00 (3), 12/03/2025 17:02 (1)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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