dbcve.org
IcloudApplication · Apple

CVE-2019-8582

MEDIUM · 5.5 CVSS v3.1 Published 2020-10-27
Fix available
A fix is available. Upgrade to 7.12 / 10.14.5 or later.
See remediation →
58/100
Remediation priority · Elevated
No privileges

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
An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in iCloud for Windows 7.12, tvOS 12.3, iTunes 12.9.5 for Windows, macOS Mojave 10.14.5, Security Update 2019-003 High Sierra, Security Update 2019-003 Sierra, iOS 12.3. Processing a maliciously crafted font may result in the disclosure of process memory.

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 · high confidence

An out-of-bounds read vulnerability exists in the font parsing subsystem of multiple Apple products. When processing a maliciously crafted font file, the application reads memory outside the intended buffer boundaries due to insufficient bounds checking, potentially exposing sensitive process memory to an attacker.

MitigationApply the relevant security updates for the affected products: iOS 12.3, macOS Mojave 10.14.5/Security Update 2019-003, tvOS 12.3, iTunes 12.9.5 for Windows, or iCloud for Windows 7.12, depending on the deployment.

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
IcloudApplication
Affected:< 7.12
ItunesApplication
Affected:< 12.9.5
Iphone OsOperating system
Affected:< 12.3
Mac Os XOperating system
Affected:< 10.14.5
TvosOperating system
Affected:< 12.3

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
Local
Complexity
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/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 installed Apple products
    Check which of the following Apple software is installed on the system: iCloud for Windows, iTunes for Windows or macOS, or determine if the system is running macOS, iOS, or tvOS. Use system settings, installed programs list, or About menus to list all Apple products present.
    Affected if Any of the following products are installed: iCloud for Windows, iTunes, or the system runs macOS, iOS, or tvOS.
  2. Check iCloud for Windows version
    Open iCloud (if installed on Windows), navigate to the application menu or About section, and note the version number displayed. Alternatively, open Windows Programs and Features, find iCloud, and check the version in the details pane.
    Affected if The installed version is lower than 7.12.
  3. Check iTunes version
    Open iTunes and go to Help > About iTunes (Windows) or iTunes > About iTunes (macOS). Note the version number displayed in the window.
    Affected if The installed version is lower than 12.9.5.
  4. Check macOS version
    Click the Apple menu > About This Mac. Note the macOS version number displayed (for example, 10.14.4 or similar).
    Affected if The macOS version is lower than 10.14.5 (for example, 10.14.4, 10.14.3, etc.).
  5. Check iOS or tvOS version
    On the iOS device, go to Settings > General > About > Version. On tvOS, go to Settings > General > About > Version. Note the version number displayed.
    Affected if The iOS version is lower than 12.3 or the tvOS version is lower than 12.3.

The environment is affected if any installed Apple product (iCloud for Windows < 7.12, iTunes < 12.9.5, iOS < 12.3, macOS < 10.14.5, or tvOS < 12.3) is present at a version below its fixed release.

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.

From vendor data
Upgrade available Upgrade to 7.12 / 10.14.5 / 12.3 or later
Fixed in 7.1210.14.512.3
Interim mitigation

Apply the relevant security updates for the affected products: iOS 12.3, macOS Mojave 10.14.5/Security Update 2019-003, tvOS 12.3, iTunes 12.9.5 for Windows, or iCloud for Windows 7.12, depending on the deployment.

Fix this in Icloud Scoped from the published advisory
  • Consultation4.0 h
  • Implementation6.0 h
  • Testing3.0 h
  • Review / QA2.0 h
15.0 hours of engineering $2,690
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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-2019-8582 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