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ChromeWeb browser · Google

CVE-2018-6164

MEDIUM · 6.5 CVSS v3.0 Published 2019-01-09
Fix available
A fix is available. Upgrade to 68.0.3440.75 or later.
See remediation →
72/100
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 origin checks for CSS content in Blink in Google Chrome prior to 68.0.3440.75 allowed a remote attacker to leak cross-origin data via a crafted HTML page.

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

Insufficient origin checks in Chrome's Blink rendering engine allowed CSS content to be read across origins, violating the same-origin policy. A remote attacker could embed malicious CSS in a crafted HTML page to exfiltrate sensitive data from other origins, such as authentication tokens or CSRF tokens hidden in CSS selectors or background URLs.

MitigationUpdate Google Chrome to version 68.0.3440.75 or later. For enterprise environments, deploy browser update policies to ensure all client systems have the patched version.

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:< 68.0.3440.75
Debian LinuxOperating system
Affected:= 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
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/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. Determine Chrome browser version
    Navigate to chrome://settings/help in the Chrome browser, or run 'google-chrome --version' or 'chromium --version' from command line
    Affected if The displayed version is earlier than 68.0.3440.75
  2. Check Chrome package on Debian systems
    Run 'dpkg -l | grep -i chrome' or 'apt-cache policy google-chrome-stable' on Debian-based systems
    Affected if The installed Chrome version is less than 68.0.3440.75
  3. Check Chrome package on Red Hat systems
    Run 'rpm -qa | grep -i chrome' or 'yum list installed google-chrome-stable' on RHEL-based systems
    Affected if The installed Chrome version is less than 68.0.3440.75

You are affected if the installed Google Chrome browser version is earlier than 68.0.3440.75, as this version introduced the fix for the same-origin policy bypass in CSS content handling.

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 68.0.3440.75 or later
Fixed in 68.0.3440.75
Interim mitigation

Update Google Chrome to version 68.0.3440.75 or later. For enterprise environments, deploy browser update policies to ensure all client systems have the patched version.

Fix this in Chrome Scoped from the published advisory
  • Consultation1.0 h
  • Implementation0.5 h
  • Testing0.5 h
  • Review / QA0.5 h
2.5 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.

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-2018-6164 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