Home/CVE/Apple Multiple Products WebKit Memory Corruption Vulnerability
CVE

CVE-2023-42917

Apple Multiple Products WebKit Memory Corruption Vulnerability

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.

HIGH · CVSS 8.8 ⚠ CISA KEV EPSS 0.00089
Act now
  • Listed on CISA KEV (known exploited in the wild)
  • SSVC exploitation status: active
  • CVSS base score ≥ 7.0
Sigma rules8 YARA rules0
⬢

Required Remediation

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

⬡

Weakness Classification

CWE-787Out-of-bounds Write
CWE-787Out-of-bounds Write
▤

Affected Products & Versions

11
apple safari< 17.1.2
apple ipados< 15.8.1
apple ipados>= 16.0 and < 16.7.3
apple ipados>= 17.0 and < 17.1.2
apple iphone os< 15.8.1
apple iphone os>= 16.0 and < 16.7.3
apple iphone os>= 17.0 and < 17.1.2
apple macos>= 14.0 and < 14.1.2
◈

Sigma Hunt Rules

8
Exact rules name this CVE ID. Product rules name an affected product in their title. Related rules cover techniques used by actors who exploited this CVE. Showing the most relevant matches; the complete related set is on the full drill-down.
producthighSuspicious Microsoft Office Child Process - MacOS
producthighRemote Access Tool - Renamed MeshAgent Execution - MacOS
producthighBinary Padding - MacOS
productmediumSuspicious Execution via macOS Script Editor
productmediumSystem Information Discovery Via Sysctl - MacOS
productmediumNew File Exclusion Added To Time Machine Via Tmutil - MacOS
▣

Scoring & Timeline

8.8
HIGH · CVSS v3.1 · product-security@apple.com
View on NVD
Attack Vector
Network Adjacent Local Physical
Attack Complexity
Low High
Privileges Required
None Low High
User Interaction
None Required
Scope
Unchanged Changed
Confidentiality
None Low High
Integrity
None Low High
Availability
None Low High
Published to NVD30 Nov 2023 · 11:15 PM
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC triage · cisa-vulnrichment
Exploitation
active
Automatable
no
Technical impact
total
SSVC asks the questions that actually drive patch urgency: is it being exploited, can attacks be automated, and how total is the impact.
⚑

Vendor Advisories

19
rhsaRHSA-2025:10364Important
rhsaRHSA-2024:9679Important
rhsaRHSA-2024:9646Important
rhsaRHSA-2024:9653Important
rhsaRHSA-2024:9680Important
🔗

References & Sources

19
Source URLs (vendor pages, mailing lists, write-ups). Exploit/PoC links are in their own section above to avoid duplication.
http://seclists.org/fulldisclosure/2023/Dec/12Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/13Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/3Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/4Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/5Mailing ListThird Party Advisory
http://seclists.org/fulldisclosure/2023/Dec/8Mailing ListThird Party Advisory
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