CVE-2024-23270 Overview
CVE-2024-23270 is a memory handling flaw affecting multiple Apple operating systems. An application running on a vulnerable device can leverage the issue to execute arbitrary code with kernel privileges. Apple resolved the issue in iOS 17.4, iPadOS 17.4, macOS Monterey 12.7.4, macOS Sonoma 14.4, macOS Ventura 13.6.5, and tvOS 17.4. The vulnerability is categorized under [CWE-787] (Out-of-Bounds Write) and requires local access with user interaction to exploit.
Critical Impact
A malicious application can escalate to kernel privileges and take full control of the affected Apple device.
Affected Products
- Apple iOS and iPadOS prior to 17.4
- Apple macOS Monterey prior to 12.7.4, macOS Ventura prior to 13.6.5, and macOS Sonoma prior to 14.4
- Apple tvOS prior to 17.4
Discovery Timeline
- 2024-03-08 - CVE-2024-23270 published to the National Vulnerability Database (NVD)
- 2026-06-17 - Last updated in NVD database
Technical Details for CVE-2024-23270
Vulnerability Analysis
CVE-2024-23270 is a kernel-level memory handling defect present across Apple's operating system lineup. According to Apple's advisories, the issue was addressed with improved memory handling, indicating the original code path mishandled memory operations in a way that permitted arbitrary code execution at the kernel layer. The associated weakness classification [CWE-787] describes an out-of-bounds write, in which the kernel writes data past the intended boundary of a memory buffer.
Successful exploitation grants an attacker the ability to run code with the highest privilege level available on the device. Kernel-level code execution allows bypassing sandbox restrictions, disabling security controls, and persisting across reboots.
Root Cause
The root cause is improper memory handling within an Apple kernel component. The patch notes reference "improved memory handling" as the remediation, consistent with an out-of-bounds write ([CWE-787]) in a kernel-mode code path. Apple has not published detailed technical analysis beyond the advisory text.
Attack Vector
Exploitation requires local access. An application already running on the device must trigger the vulnerable code path and user interaction is required as noted by the CVSS vector. Because the flaw resides in the kernel, any application that reaches the vulnerable interface can attempt to escalate privileges.
No verified proof-of-concept code has been publicly released for CVE-2024-23270. Refer to the Apple Support Document HT214081 and related advisories for authoritative technical details.
Detection Methods for CVE-2024-23270
Indicators of Compromise
- Unexpected installation of applications from outside the App Store or from untrusted developer profiles.
- Kernel panic logs or unexpected system reboots that correlate with the launch of a specific third-party application.
- Newly created system-level LaunchDaemons, kernel extensions, or configuration profiles on macOS endpoints.
Detection Strategies
- Inventory Apple endpoints and flag devices running OS versions below the patched builds listed in Apple's advisories.
- Correlate application execution telemetry with subsequent privilege escalation events or suspicious kernel activity.
- Review Mobile Device Management (MDM) compliance reports to identify devices missing the March 2024 security updates.
Monitoring Recommendations
- Ingest macOS Unified Log data and iOS/iPadOS MDM telemetry into a centralized analytics platform for behavioral review.
- Alert on unsigned or ad-hoc signed applications requesting elevated entitlements on managed Apple devices.
- Track OS version drift over time to ensure fleets remain on patched builds.
How to Mitigate CVE-2024-23270
Immediate Actions Required
- Update all Apple devices to the fixed releases: iOS 17.4, iPadOS 17.4, macOS Monterey 12.7.4, macOS Sonoma 14.4, macOS Ventura 13.6.5, and tvOS 17.4 or later.
- Enforce automatic updates through MDM policy on managed Apple endpoints.
- Restrict installation of unvetted applications on corporate devices, particularly those requesting broad entitlements.
Patch Information
Apple released fixes on March 7, 2024. Consult the vendor advisories for build numbers and per-platform notes: Apple Support Document HT214081, HT214083, HT214084, HT214085, and HT214086.
Workarounds
- No vendor-supplied workaround exists; installing the patched OS version is the only supported remediation.
- Reduce exposure by limiting the applications installed on affected devices until updates are applied.
- Use MDM to block sideloading and require signed applications from trusted publishers.
# Verify the installed macOS build meets the patched version
sw_vers -productVersion
# Trigger available software updates on macOS
sudo softwareupdate --install --all --restart
Disclaimer: This content was generated using AI. While we strive for accuracy, please verify critical information with official sources.
