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ChromeWeb browser · Google

CVE-2018-6144

HIGH · 8.8 CVSS v3.0 Published 2019-01-09
Fix available
A fix is available. Upgrade to 67.0.3396.62 or later.
See remediation →
95/100
Remediation priority · Urgent
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
Off-by-one error in PDFium in Google Chrome prior to 67.0.3396.62 allowed a remote attacker to perform an out of bounds memory write via a crafted PDF file.

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

An off-by-one error in PDFium (Google Chrome's PDF rendering engine) allows a remote attacker to perform an out-of-bounds memory write by tricking a user into opening a specially crafted malicious PDF file. The vulnerability stems from incorrect boundary checking during PDF parsing that writes one element past the allocated buffer.

MitigationUpdate Google Chrome to version 67.0.3396.62 or later to patch the vulnerability. Users should avoid opening untrusted PDF files until the update is applied.

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:< 67.0.3396.62
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
High
Availability
High

CVSS:3.0/AV:N/AC:L/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 checks

Work through these to decide whether this CVE applies to you.

  1. Check Google Chrome version
    Navigate to chrome://settings/help or run 'google-chrome --version' in terminal to see the installed Chrome version
    Affected if Version is earlier than 67.0.3396.62
  2. Check if running on affected Debian Linux
    Run 'cat /etc/debian_version' to identify the Debian release version
    Affected if Version is 9.0 (and Chrome is installed)
  3. Check if running on affected RHEL/CentOS 6
    Run 'cat /etc/redhat-release' to identify the Red Hat Enterprise Linux version
    Affected if Version shows 6.0 (and Chrome is installed)
  4. Verify PDFium is accessible
    Attempt to open a PDF file in Google Chrome or check if a PDF viewer extension/plugin is enabled in the browser
    Affected if PDF files can be opened in Chrome - the vulnerability triggers when a user opens a specially crafted malicious PDF

A user is affected if they are running Google Chrome versions before 67.0.3396.62 on vulnerable systems (Debian 9.0 or RHEL 6.0) and can open PDF files in the browser.

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 67.0.3396.62 or later
Fixed in 67.0.3396.62
Interim mitigation

Update Google Chrome to version 67.0.3396.62 or later to patch the vulnerability. Users should avoid opening untrusted PDF files until the update is applied.

Fix this in Chrome Scoped from the published advisory
  • Consultation1.0 h
  • Implementation2.0 h
  • Testing1.0 h
  • Review / QA1.0 h
5.0 hours of engineering $890
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,424.

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-2018-6144 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