Assessment
Why it matters
CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 23.8%; technical severity is CVSS 8.8.
A type confusion issue was addressed with improved checks. This issue is fixed in iOS 16.5.1 and iPadOS 16.5.1, iOS 15.7.7 and iPadOS 15.7.7, macOS Ventura 13.4.1, Safari 16.5.1. Processing maliciously crafted web content may lead to arbitrary code execution. Apple is aware of a report that this issue may have been actively exploited.
Who should care
- Teams operating Ipados, Iphone Os, macOS +3 more
- Vulnerability and exposure management teams
- Security operations teams monitoring exploitation activity
Response plan
What I would do
- Confirm whether Ipados, Iphone Os, macOS +3 more is present in the environment.
- Identify affected versions and establish whether vulnerable services are exposed or reachable.
- Apple Security patch HT213814
- Review relevant security telemetry for evidence of attempted or successful exploitation.
- Document the remediation decision and track it to verified completion.
Treatment intelligence
Remediation intelligence
Vendor sources are listed before government and third-party guidance. Confirm product applicability and change prerequisites before deployment.
Verification noteAutomated link verification has not completed for this guidance yet.
Patch
Upgrade
- Apple Security release notes HT213811Apple · Vendor sourceVerification pending ↗
- Apple Security release notes HT213813Apple · Vendor sourceVerification pending ↗
- Apple Security release notes HT213814Apple · Vendor sourceVerification pending ↗
- Apple Security release notes HT213816Apple · Vendor sourceVerification pending ↗
Technical details
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- CWE
- CWE-843
- Affected versions
- Apple Ipados (End Excluding 15.7.7 | Start Including 16.0, End Excluding 16.5.1); Apple Iphone Os (End Excluding 15.7.7 | Start Including 16.0, End Excluding 16.5.1); Apple macOS (Start Including 13.0, End Excluding 13.4.1); Apple Multiple Products; Apple Safari (End Excluding 16.5.1); WebKitGTK WebKitGTK (End Excluding 2.42.3)
- Fixed versions
- Apple Ipados (Fixed from 15.7.7, 16.5.1); Apple Iphone Os (Fixed from 15.7.7, 16.5.1); Apple macOS (Fixed from 13.4.1); Apple Safari (Fixed from 16.5.1); WebKitGTK WebKitGTK (Fixed from 2.42.3)
- Published
- 23 June 2023
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
Signal timeline
- CVE published
- Added to CISA KEV
- Latest EPSS score: 23.8%
- Signal calculated at 74