CVEvulnerability

CVE-2023-42917

8.8 HIGH Known exploited Published 2023-11-30 Modified 2026-06-17 Official page ↗

CISA Known Exploited Vulnerability

Apple Multiple Products WebKit Memory Corruption Vulnerability — Apple Multiple Products

Apple iOS, iPadOS, macOS, and Safari WebKit contain a memory corruption vulnerability that leads to code execution when processing maliciously crafted web content. This vulnerability could impact HTML parsers that use WebKit, including but not limited to Apple Safari and non-Apple products which rely on WebKit for HTML processing.

Added to KEV
2023-12-04
Remediation due
2023-12-25
Ransomware use
Unknown
Required action
Apply remediations or mitigations per vendor instructions or discontinue use of the product if remediation or mitigations are unavailable.
Notes
https://support.apple.com/en-us/HT214031, https://support.apple.com/en-us/HT214032, https://support.apple.com/en-us/HT214033 ; https://nvd.nist.gov/vuln/detail/CVE-2023-42917
Status
Analyzed
Published
2023-11-30
Last modified
2026-06-17
Assigner
[email protected]
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weaknesses
CWE-787

Description

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.

Affected configurations

• apple safari (< 17.1.2) • apple ipados (< 15.8.1) • apple ipados (>= 16.0 < 16.7.3) • apple ipados (>= 17.0 < 17.1.2) • apple iphone os (< 15.8.1) • apple iphone os (>= 16.0 < 16.7.3) • apple iphone os (>= 17.0 < 17.1.2) • apple macos (>= 14.0 < 14.1.2) • debian debian linux 11.0 • debian debian linux 12.0 • fedoraproject fedora 38 • fedoraproject fedora 39 • webkitgtk webkitgtk\+ (< 2.42.3)

Related

Weakness · CWE (1)

  • CWE-787 Out-of-bounds Write weakness

References