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ChromeWeb browser · Google

CVE-2018-17457

HIGH · 8.8 CVSS v3.0 Published 2019-01-09
Fix available
A fix is available. Upgrade to 69.0.3497.81 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
An object lifecycle issue in Blink could lead to a use after free in WebAudio in Google Chrome prior to 69.0.3497.81 allowed a remote attacker to execute arbitrary code inside a sandbox 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

A use-after-free vulnerability in WebAudio exists in Google Chrome prior to 69.0.3497.81 due to an object lifecycle issue in Blink. A remote attacker can exploit this by tricking users into visiting a crafted HTML page, potentially allowing arbitrary code execution within the sandboxed browser context.

MitigationUpdate Google Chrome to version 69.0.3497.81 or later to patch the use-after-free vulnerability in the WebAudio component.

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:< 69.0.3497.81

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 installed Chrome version
    Navigate to chrome://version or click Help > About Google Chrome to see the full version number
    Affected if Version number is less than 69.0.3497.81
  2. Verify Chrome version via command line
    On Windows, check registry key HKLM\Software\Google\Chrome\BLBeacon\version. On macOS, run: /Applications/Google\ Chrome.app/Contents/MacOS/Google\ Chrome --version
    Affected if Reported version is below 69.0.3497.81
  3. Review browser history for suspicious pages
    Check Chrome history (chrome://history) around the timeframe of potential exposure for unfamiliar or untrusted HTML pages
    Affected if History contains visits to untrusted or suspicious HTML pages while using a vulnerable Chrome version

You are affected if Chrome version is below 69.0.3497.81 and the browser could have rendered a maliciously crafted WebAudio HTML page.

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 69.0.3497.81 or later
Fixed in 69.0.3497.81
Interim mitigation

Update Google Chrome to version 69.0.3497.81 or later to patch the use-after-free vulnerability in the WebAudio component.

Fix this in Chrome 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.

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-2018-17457 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