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ChromeWeb browser · Google

CVE-2018-6039

MEDIUM · 6.1 CVSS v3.0 Published 2018-09-25
Fix available
A fix is available. Upgrade to 64.0.3282.119 or later.
See remediation →
68/100
Remediation priority · Elevated
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
Insufficient data validation in DevTools in Google Chrome prior to 64.0.3282.119 allowed a remote attacker to potentially leak user cross-origin data via a crafted Chrome Extension.

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 confidence

Insufficient data validation in Chrome DevTools allowed a malicious Chrome extension to potentially leak cross-origin user data. The vulnerability existed in Chrome versions prior to 64.0.3282.119 and required user interaction (installing a crafted extension).

MitigationUpdate Chrome to version 64.0.3282.119 or later. For enterprise environments, deploy the browser update via patch management. Review installed extensions and remove any untrusted or unnecessary extensions.

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
ChromeWeb browser
Affected:< 64.0.3282.119
Debian LinuxOperating system
Affected:= 8.0= 9.0
Enterprise Linux DesktopOperating system
Affected:= 6.0
Enterprise Linux ServerOperating system
Affected:= 6.0
Enterprise Linux WorkstationOperating system
Affected:= 6.0

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
Changed
Confidentiality
Low
Integrity
Low
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/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 Google Chrome version
    Open Chrome, click the three-dot menu > Help > About Google Chrome, or navigate to chrome://settings/help
    Affected if The displayed version is less than 64.0.3282.119
  2. Check installed Chrome extensions
    Open Chrome, navigate to chrome://extensions, or click the puzzle piece icon in the toolbar to view enabled extensions
    Affected if Any third-party extensions are installed (the flaw requires a crafted malicious extension to exploit)

You are affected if your Chrome version is below 64.0.3282.119 and you have any non-default extensions installed, as the exploit requires a malicious extension to leak cross-origin data via DevTools.

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 64.0.3282.119 or later
Fixed in 64.0.3282.119
Interim mitigation

Update Chrome to version 64.0.3282.119 or later. For enterprise environments, deploy the browser update via patch management. Review installed extensions and remove any untrusted or unnecessary extensions.

Fix this in Chrome Scoped from the published advisory
  • Consultation2.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,090
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,744.

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-2018-6039 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