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Mac Os XOperating system · Apple

CVE-2017-13892

HIGH · 7.5 CVSS v3.1 Published 2021-12-23
Fix available
A fix is available. Upgrade to 10.11.6 / 10.12.6 or later.
See remediation →
84/100
Remediation priority · High
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
An issue existed in the handling of Contact sharing. This issue was addressed with improved handling of user information. This issue is fixed in macOS High Sierra 10.13.2, Security Update 2017-002 Sierra, and Security Update 2017-005 El Capitan. Sharing contact information may lead to unexpected data sharing.

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

A vulnerability in macOS Contacts application allows unexpected data sharing when users share contact information. The issue stems from improper handling of user information during the contact sharing process, potentially exposing more data than intended to recipients.

MitigationApply the appropriate security update for the affected macOS version: High Sierra 10.13.2, Security Update 2017-002 for Sierra, or Security Update 2017-005 for El Capitan.

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
Mac Os XOperating system
Affected:>= 10.11, < 10.11.6>= 10.12, < 10.12.6= 10.11.6= 10.12.6
macOSOperating system
Affected:< 10.13.2

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
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/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. Check installed macOS version
    Run 'sw_vers' in Terminal or click Apple menu > About This Mac to view the version number
    Affected if The version shown is 10.11.x before 10.11.6, 10.12.x before 10.12.6, or any version below 10.13.2 (including unpatched 10.11.6 and 10.12.6)
  2. Confirm Contacts application is in use
    Verify the Contacts app exists at /Applications/Contacts.app or check for recent use in ~/Library/Application Support/AddressBook/
    Affected if Contacts application is present and has been used to store or share contact information
  3. Verify if the vulnerability is patched
    Check System Preferences > App Store for available updates, or run 'softwareupdate -l' to list available security updates
    Affected if Security Update 2017-002 (Sierra), Security Update 2017-005 (El Capitan), or High Sierra 10.13.2 has not been installed

Your environment is affected if you are running macOS 10.11.x, 10.12.x, or any version below 10.13.2 and use the Contacts application to share contact information without having applied the corresponding security update.

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 10.11.6 / 10.12.6 / 10.13.2 or later
Fixed in 10.11.610.12.610.13.2
Interim mitigation

Apply the appropriate security update for the affected macOS version: High Sierra 10.13.2, Security Update 2017-002 for Sierra, or Security Update 2017-005 for El Capitan.

Recommended fix High confidence

macOS High Sierra 10.13.2 or later (or latest macOS version available)

  1. Check the current macOS version by clicking Apple menu > About This Mac
  2. For macOS El Capitan (10.11.x): Install Security Update 2017-005 from the App Store or Apple Support downloads
  3. For macOS Sierra (10.12.x): Install Security Update 2017-002 from the App Store or Apple Support downloads
  4. For macOS High Sierra (10.13.x) or later: Upgrade to macOS 10.13.2 or later, preferably the latest available version
  5. After updating, verify the version by checking About This Mac to confirm the fix is applied
Caveat Standard macOS upgrade considerations apply - review app compatibility and backup data before upgrading

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

Fix this in Mac Os X Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing2.0 h
  • Review / QA1.0 h
7.0 hours of engineering $1,240
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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-2017-13892 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