Apple Safari Web Contents memory corruption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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7.9$5k-$25k0.00

Summaryinfo

A vulnerability was found in Apple Safari. It has been classified as critical. This affects an unknown part of the component Web Contents Handler. The manipulation leads to memory corruption. This vulnerability is referenced as CVE-2023-42917. Remote exploitation of the attack is possible. Furthermore, an exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability was found in Apple Safari (Web Browser) (unknown version). It has been rated as critical. This issue affects an unknown code block of the component Web Contents Handler. 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 summary by CVE is:

A memory corruption vulnerability was addressed with improved locking. This issue is fixed in iOS 17.1.2 and iPadOS 17.1.2, macOS Sonoma 14.1.2, Safari 17.1.2. Processing web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been exploited against versions of iOS before iOS 16.7.1.

The weakness was published 12/01/2023. The advisory is shared at support.apple.com. The identification of this vulnerability is CVE-2023-42917 since 09/14/2023. It demands that the victim is doing some kind of user interaction. Technical details are unknown but an exploit is available. The price for an exploit might be around USD $5k-$25k at the moment (estimation calculated on 02/04/2025).

It is declared as attacked. The vulnerability scanner Nessus provides a plugin with the ID 209883 (RHEL 9 : webkit2gtk3 (RHSA-2024:8496)), which helps to determine the existence of the flaw in a target environment. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 12/04/2023 with a due date of 12/25/2023:

Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Zero-Day.cz (838) and Tenable (209883). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 8.0
VulDB Meta Temp Score: 7.9

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 8.8
NVD Vector: 🔍

CNA Base Score: 8.8
CNA Vector: 🔍

CVSSv2info

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

Exploitinginfo

Class: Memory corruption
CWE: 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: 209883
Nessus Name: RHEL 9 : webkit2gtk3 (RHSA-2024:8496)

Zero-Day.cz: 🔍

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

09/14/2023 🔍
12/01/2023 +78 days 🔍
12/01/2023 +0 days 🔍
04/21/2025 +507 days 🔍

Sourcesinfo

Vendor: apple.com

Advisory: FEDORA-2023-540bb86780
Status: Confirmed

CVE: CVE-2023-42917 (🔍)
GCVE (CVE): GCVE-0-2023-42917
GCVE (VulDB): GCVE-100-246545
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 12/01/2023 06:44
Updated: 04/21/2025 02:36
Changes: 12/01/2023 06:44 (40), 12/21/2023 13:03 (1), 12/21/2023 13:11 (11), 04/30/2024 07:27 (23), 05/15/2024 17:15 (1), 06/05/2024 14:20 (2), 06/11/2024 05:07 (2), 09/09/2024 22:30 (1), 10/30/2024 09:40 (2), 02/04/2025 01:40 (11), 04/21/2025 02:36 (3)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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