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SafariWeb browser · Apple

CVE-2019-8684

HIGH · 8.8 CVSS v3.1 Published 2019-12-18
Fix available
A fix is available. Upgrade to 7.13 / 10.6 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable 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
Multiple memory corruption issues were addressed with improved memory handling. This issue is fixed in iOS 12.4, macOS Mojave 10.14.6, tvOS 12.4, watchOS 5.3, Safari 12.1.2, iTunes for Windows 12.9.6, iCloud for Windows 7.13, iCloud for Windows 10.6. Processing maliciously crafted web content may lead to arbitrary code execution.

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

Memory corruption vulnerability in WebKit allowing arbitrary code execution via malicious web content. Affects Safari, iOS, macOS, tvOS, watchOS, and iCloud/iTunes for Windows through processing of crafted web pages.

MitigationApply vendor-supplied patches by updating all affected Apple products (iOS 12.4+, macOS Mojave 10.14.6+, Safari 12.1.2+, tvOS 12.4+, watchOS 5.3+) to patched versions.

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
SafariWeb browser
Affected:< 12.1.2
Enterprise Linux DesktopOperating system
Affected:= 7.0
Enterprise Linux ServerOperating system
Affected:= 7.0
Enterprise Linux WorkstationOperating system
Affected:= 7.0
IcloudApplication
Affected:< 7.13>= 10.0, < 10.6
ItunesApplication
Affected:< 12.9.6
Iphone OsOperating system
Affected:< 12.4
Mac Os XOperating system
Affected:< 10.14.6

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

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

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
    On the system to be checked, look for installed Apple software: Safari (check /Applications/Safari.app or browser version), iTunes (check Program Files/iTunes or version info), iCloud (check Program Files/Apple/Software Update or version info), or check macOS/iOS version via System Preferences/Settings
    Affected if Any of Safari, iTunes, iCloud, or Apple device OS versions fall within the affected ranges listed in the CVE
  2. Check Safari version
    On macOS: Open Safari > Safari menu > About Safari. On Windows: Open iTunes > Help > About iTunes (iTunes includes Safari component). Compare the version number to 12.1.2
    Affected if Safari version is earlier than 12.1.2
  3. Check macOS version
    Click Apple menu > About This Mac. Look for the version number (e.g., 10.14.5)
    Affected if macOS version is earlier than 10.14.6
  4. Check iOS version on Apple devices
    On iPhone/iPad: Settings > General > About > Version
    Affected if iOS version is earlier than 12.4
  5. Check iTunes version on Windows
    Open iTunes > Help > About iTunes. Compare version to 12.9.6
    Affected if iTunes version is earlier than 12.9.6
  6. Check iCloud for Windows version
    Open iCloud > Help > About iCloud. Check against versions 10.0 to 10.5 (vulnerable) and versions below 7.13
    Affected if iCloud for Windows version is 7.13 or higher but less than 10.0, OR 10.0 or higher but less than 10.6

The environment is affected if any Apple product (Safari, macOS, iOS, iTunes, or iCloud for Windows) with WebKit component is installed with a version lower than the fixed versions specified in the CVE.

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 7.13 / 10.6 / 10.14.6 or later
Fixed in 7.1310.610.14.6
Interim mitigation

Apply vendor-supplied patches by updating all affected Apple products (iOS 12.4+, macOS Mojave 10.14.6+, Safari 12.1.2+, tvOS 12.4+, watchOS 5.3+) to patched versions.

Fix this in Safari Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA2.0 h
10.0 hours of engineering $1,780
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Scan for this in your stack

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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-2019-8684 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