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SafariWeb browser · Apple

CVE-2012-3627

HIGH · 9.3 CVSS v2.0 Published 2012-07-25
Fix available
A fix is available. Upgrade to after 5.1.7 or later.
See remediation →
100/100
Remediation priority · Urgent
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
WebKit, as used in Apple Safari before 6.0, allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption and application crash) via a crafted web site, a different vulnerability than other WebKit CVEs listed in APPLE-SA-2012-07-25-1.

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 (used by Safari before version 6.0) allows remote attackers to execute arbitrary code or cause a denial of service via a crafted website.

MitigationUpdate Safari to version 6.0 or later, or apply Apple's corresponding security patch (APPLE-SA-2012-07-25-1).

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:<= 5.1.7= 1.0= 1.0.0= 1.0.0b1= 1.0.0b2= 1.0.1= 1.0.2= 1.0.3= 1.0b1= 1.1= 1.1.0= 1.1.1

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
M
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete

AV:N/AC:M/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. Determine installed Safari version
    Open Safari, click Safari menu, select About Safari, or run: defaults read /Applications/Safari.app/Contents/Info CFBundleShortVersionString
    Affected if Version displays as 5.1.7 or lower, or any version listed in the affected versions (1.0 through 5.1.7)
  2. Verify WebKit component exists
    Check for WebKit framework presence: ls /System/Library/Frameworks/WebKit.framework/ on macOS
    Affected if WebKit framework is present and version corresponds to pre-6.0 Safari bundle
  3. Cross-check via system profiler
    Run: system_profiler SPApplicationsDataType | grep -A2 Safari
    Affected if Reported Safari version is below 6.0

You are affected if your installed Safari version is any version lower than 6.0, as the memory corruption flaw in the bundled WebKit exists in all those versions.

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 a release after 5.1.7
Interim mitigation

Update Safari to version 6.0 or later, or apply Apple's corresponding security patch (APPLE-SA-2012-07-25-1).

Recommended fix High confidence

Safari 6.0 or later (requires OS X 10.7.3 or later)

  1. Open Safari and navigate to Safari > About Safari (or the Help menu on Windows) to confirm the current version number
  2. If running Safari 5.1.7 or earlier on OS X 10.7.3 or later, upgrade to Safari 6.0 or later via the Software Update mechanism (Apple Menu > Software Update)
  3. For systems that cannot run Safari 6.0 (OS X versions earlier than 10.7.3), upgrade the operating system to a supported version first, then upgrade Safari
  4. After upgrading, verify the new Safari version by checking Safari > About Safari
Caveat Safari 6.0 requires OS X 10.7.3 (Lion) or later; older OS X versions must be upgraded first, which may have additional compatibility implications

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

Fix this in Safari Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing1.0 h
  • Review / QA1.0 h
4.0 hours of engineering $750
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,200.

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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-2012-3627 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