CISA KEV · Known exploitedHigh

CVE-2023-42917

Apple Multiple Products

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.

CVSS
8.8
EPSS
9.37%
94.9% percentile
CISA KEV
Listed
Published
2023.12.01
PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV
Exploit probability9.37%
Technical severityCVSS 8.8

Vulnerability overview

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 product and versions

Product
Apple Multiple Products
Affected versions
unspecified, < 17.1.2, < 15.8.1, >= 16.0 < 16.7.3, >= 17.0 < 17.1.2, >= 14.0 < 14.1.2, 11.0, 12.0, 38, 39, < 2.42.3
Fixed versions
17.1.2, 15.8.1, 16.7.3, 14.1.2, 2.42.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
CISA required action

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

Due date: 2023.12.25
  1. 1
    Identify

    Confirm that Apple Multiple Products and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CWE
CWE-787
KEV added
2023.12.04
Ransomware use
미확인
CVE-2023-42917 — Apple Multiple Products | SECUFOCUS NOW