CVE-2023-42917

HIGH KEV

Safari < 17.1.2 - Memory Corruption via Improved Locking

Title source: llm
STIX 2.1

Exploitation Summary

CVE-2023-42917 is actively exploited and listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added December 4, 2023.

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.

References (19)

Core 19
Core References
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/12
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/13
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/3
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/4
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/5
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/8
Mailing List, Third Party Advisory
http://seclists.org/fulldisclosure/2024/Jan/35
Mailing List, Third Party Advisory
http://www.openwall.com/lists/oss-security/2023/12/05/1
Mailing List, Third Party Advisory
https://www.debian.org/security/2023/dsa-5575

Scores

CVSS v3 8.8
EPSS 0.0009
EPSS Percentile 25.6%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation active
Automatable no
Technical Impact total

Details

CISA KEV 2023-12-04
VulnCheck KEV 2023-11-30
InTheWild.io 2023-11-30
ENISA EUVD EUVD-2023-47338
CWE
CWE-787
Status published
Products (9)
apple/ipados < 15.8.1
apple/iphone_os < 15.8.1
apple/macos 14.0 - 14.1.2
apple/safari < 17.1.2
debian/debian_linux 11.0
debian/debian_linux 12.0
fedoraproject/fedora 38
fedoraproject/fedora 39
webkitgtk/webkitgtk\+ < 2.42.3
Published Nov 30, 2023
KEV Added Dec 04, 2023
Tracked Since Feb 18, 2026