CVE-2017-7151
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 · uneditedA race condition was addressed with additional validation. This issue affected versions prior to iOS 11.2, macOS High Sierra 10.13.2, tvOS 11.2, watchOS 4.2, iTunes 12.7.2 for Windows, macOS High Sierra 10.13.4.
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 confidenceA race condition vulnerability in Apple products (iOS, macOS, tvOS, watchOS, iTunes for Windows) was addressed with additional validation. The vulnerability existed in versions prior to the fixes listed, allowing potential exploitation via the race condition.
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< 11.2< 10.13.2>= 10.13.3, < 10.13.4< 11.2< 4.2< 12.7.2CVSS 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
- High
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.0/AV:L/AC:H/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 checksWork through these to decide whether this CVE applies to you.
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Check iOS version on iPhone or iPadGo to Settings > General > About and look at the 'Version' field, or run 'nsurlsessiond' related queries via iOS management toolsAffected if Version is lower than 11.2 (for example, 11.1.2, 11.1.1, 11.0.x, 10.x)
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Check macOS versionRun 'sw_vers -productVersion' in Terminal, or click Apple menu > About This MacAffected if Version is 10.13.0, 10.13.1, or 10.13.3 (the 10.13.3 case applies only to specific 10.13.3 builds before 10.13.4)
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Check tvOS version on Apple TVGo to Settings > General > About > Version, or check via Xcode or Apple Configurator if managedAffected if Version is lower than 11.2 (for example, 11.1, 11.0.x, 10.x)
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Check watchOS version on Apple WatchOpen the Watch app on paired iPhone, go to General > About, or check via Settings on the watch itselfAffected if Version is lower than 4.2 (for example, 4.1, 4.0.x, 3.x)
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Check iTunes version on WindowsOpen iTunes, go to Help > About iTunes, or check the version in Add/Remove ProgramsAffected if Version is lower than 12.7.2 (for example, 12.7.1, 12.7.0, 12.6.x)
If the installed version of any Apple product falls below the safe version threshold (iOS 11.2+, macOS 10.13.2+ or 10.13.4+, tvOS 11.2+, watchOS 4.2+, iTunes 12.7.2+), the environment is affected by this race condition vulnerability.
Generated from the published advisory. Verify against your own configuration.
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 data4.210.13.210.13.4
Apply the vendor-supplied patches: update to iOS 11.2+, macOS High Sierra 10.13.2+ (or 10.13.4+ for specific builds), tvOS 11.2+, watchOS 4.2+, or iTunes 12.7.2+ for Windows.
- Consultation2.0 h
- Implementation4.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-7151 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2017-7151 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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