dbcve.org
Iphone OsOperating system · Apple

CVE-2015-3800

HIGH · 7.2 CVSS v2.0 Published 2015-08-17
Fix available
A fix is available. Upgrade to after 10.10.4 or later.
See remediation →
77/100
Remediation priority · High
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
The DiskImages component in Apple iOS before 8.4.1 and OS X before 10.10.5 allows local users to gain privileges or cause a denial of service (memory corruption and application crash) via a malformed DMG image.

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

The DiskImages component in Apple iOS before 8.4.1 and OS X before 10.10.5 contains a memory corruption vulnerability when parsing malformed DMG image files. A local attacker who tricks a user into mounting a specially crafted DMG image can exploit this to elevate privileges or cause a denial of service through application crash.

MitigationApply Apple security updates: upgrade iOS to version 8.4.1 or later, and upgrade OS X to version 10.10.5 or later. Avoid mounting DMG images from untrusted sources.

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
Iphone OsOperating system
Affected:<= 8.4
Mac Os XOperating system
Affected:<= 10.10.4

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
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:L/AC:L/Au:N/C:C/I:C/A:C

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 iOS version on iPhone or iPad
    Open Settings app, go to General > About, and look at the Version field
    Affected if Version displays 8.4 or lower (for example, 8.3, 8.2, 8.1, 8.0)
  2. Check OS X version on Mac
    Click Apple menu > About This Mac, the version number appears below the macOS name (such as 10.10.4 or lower)
    Affected if Version displays 10.10.4 or lower (for example, 10.10.3, 10.10.2, 10.10.1, 10.10)
  3. Identify DiskImages component usage
    This component handles DMG file mounting - the vulnerability triggers when mounting a malformed DMG file using DiskImageMounter or the Finder
    Affected if You mount DMG files from any source, especially untrusted or downloaded DMG images

You are affected if your iOS version is 8.4 or lower, or your OS X version is 10.10.4 or lower, and you mount DMG images from untrusted sources.

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 a release after 10.10.4
Interim mitigation

Apply Apple security updates: upgrade iOS to version 8.4.1 or later, and upgrade OS X to version 10.10.5 or later. Avoid mounting DMG images from untrusted sources.

Fix this in Iphone Os Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
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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-2015-3800 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