dbcve.org
IpadosOperating system · Apple

CVE-2024-27823

MEDIUM · 5.9 CVSS v3.1 Published 2024-07-29
Fix available
A fix is available. Upgrade to 1.3 / 10.5 or later.
See remediation →
68/100
Remediation priority · Elevated
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
A race condition was addressed with improved locking. This issue is fixed in iOS 16.7.8 and iPadOS 16.7.8, iOS 17.5 and iPadOS 17.5, macOS Monterey 12.7.5, macOS Sonoma 14.5, macOS Ventura 13.6.7, tvOS 17.5, visionOS 1.3, watchOS 10.5. An attacker in a privileged network position may be able to spoof network packets.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

A race condition in Apple operating systems allowed attackers in a privileged network position to spoof network packets due to insufficient locking during network packet handling. The vulnerability was addressed by implementing improved locking mechanisms to prevent the race condition from occurring.

MitigationApply the relevant vendor security update: iOS 16.7.8 or later, iPadOS 16.7.8 or later, iOS 17.5 or later, iPadOS 17.5 or later, macOS Monterey 12.7.5 or later, macOS Ventura 13.6.7 or later, macOS Sonoma 14.5 or later, tvOS 17.5 or later, visionOS 1.3 or later, or watchOS 10.5 or later.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
IpadosOperating system
Affected:< 16.7.8>= 17.0, < 17.5
Iphone OsOperating system
Affected:< 16.7.8>= 17.0, < 17.5
macOSOperating system
Affected:< 12.7.5>= 13.0, < 13.6.7>= 14.0, < 14.5
TvosOperating system
Affected:< 17.5
VisionosOperating system
Affected:< 1.3
WatchosOperating system
Affected:< 10.5

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify the Apple product and version
    On macOS, run 'sw_vers' in Terminal. On iOS/iPadOS, go to Settings > General > About to view the version. On watchOS, tvOS, or visionOS, go to Settings > General > About.
    Affected if The displayed version falls within any of the affected ranges: iOS/iPadOS < 16.7.8 or >= 17.0 and < 17.5; macOS < 12.7.5 or >= 13.0 and < 13.6.7 or >= 14.0 and < 14.5; tvOS < 17.5; visionOS < 1.3; watchOS < 10.5
  2. Confirm network stack is in use
    This vulnerability affects network packet handling in the kernel. Any device using network connectivity (Wi-Fi or cellular) is using the affected component.
    Affected if The device has any network interface active or configured (Wi-Fi, cellular, or wired Ethernet).

You are affected if your device runs any of the Apple OS versions listed above and uses network connectivity, since the race condition exists in the kernel network packet handling regardless of specific configuration.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.3 / 10.5 / 12.7.5 or later
Fixed in 1.310.512.7.5
Interim mitigation

Apply the relevant vendor security update: iOS 16.7.8 or later, iPadOS 16.7.8 or later, iOS 17.5 or later, iPadOS 17.5 or later, macOS Monterey 12.7.5 or later, macOS Ventura 13.6.7 or later, macOS Sonoma 14.5 or later, tvOS 17.5 or later, visionOS 1.3 or later, or watchOS 10.5 or later.

Recommended fix High confidence

iOS 16.7.8, iOS 17.5, iPadOS 16.7.8, iPadOS 17.5, macOS Monterey 12.7.5, macOS Ventura 13.6.7, macOS Sonoma 14.5, tvOS 17.5, visionOS 1.3, or watchOS 10.5 depending on device

  1. Identify the Apple device type (iPhone, iPad, Mac, Apple TV, Apple Vision Pro, or Apple Watch)
  2. Determine the current installed OS version from Settings > General > About (iOS/iPadOS), System Settings > General > About (macOS), or Settings > General > About (tvOS/watchOS/visionOS)
  3. For iPhone/iPad: If running iOS/iPadOS < 16.7.8, upgrade to 16.7.8; if running >= 17.0 and < 17.5, upgrade to 17.5
  4. For Mac: If running Monterey (12.x), upgrade to 12.7.5; if running Ventura (13.x), upgrade to 13.6.7; if running Sonoma (14.x), upgrade to 14.5
  5. For Apple TV: Upgrade to tvOS 17.5
  6. For Apple Vision Pro: Upgrade to visionOS 1.3
  7. For Apple Watch: Upgrade to watchOS 10.5
  8. Install the update via Settings > General > Software Update (iOS/iPadOS/watchOS/tvOS/visionOS) or System Settings > Software Update (macOS)
Caveat Standard OS update; may require re-authentication for Apple services and could reset some settings; ensure backups exist before updating

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Ipados Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
5.0 hours of engineering $890
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-27823 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data