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ChromeWeb browser · Google

CVE-2017-5018

MEDIUM · 6.1 CVSS v3.0 Published 2017-02-17
Fix available
A fix is available. Upgrade to after 55.0.2883.87 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
Google Chrome prior to 56.0.2924.76 for Linux, Windows and Mac, and 56.0.2924.87 for Android, had an insufficiently strict content security policy on the Chrome app launcher page, which allowed a remote attacker to inject scripts or HTML into a privileged page 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

Google Chrome had an insufficiently strict Content Security Policy (CSP) on the Chrome app launcher page. This allowed a remote attacker to inject scripts or HTML into a privileged page by tricking users into visiting a crafted HTML page, bypassing the browser's security controls.

MitigationUpdate Google Chrome to version 56.0.2924.76 or later (56.0.2924.87 for Android) to apply the fixed content security policy. No configuration changes are required beyond the browser update.

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:<= 55.0.2883.87

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 the installed Chrome version
    Open chrome://settings/help in the Chrome address bar and note the version number displayed under 'Google Chrome'
    Affected if The version shown is 55.0.2883.87 or lower (any version up to and including 55.0.2883.87)
  2. Verify the exact version string
    Alternatively, type 'chrome://version' in the address bar to see the full version string including the revision number
    Affected if The full version string shows a build number <= 55.0.2883.87
  3. Confirm the app launcher page exists
    Type 'chrome://apps' in the address bar to access the Chrome app launcher page
    Affected if The page loads successfully (indicating the vulnerable CSP-enabled page is accessible in this browser instance)

You are affected if Google Chrome version 55.0.2883.87 or lower is installed and the chrome://apps page is accessible 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 a release after 55.0.2883.87
Interim mitigation

Update Google Chrome to version 56.0.2924.76 or later (56.0.2924.87 for Android) to apply the fixed content security policy. No configuration changes are required beyond the browser update.

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-2017-5018 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