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ChromeWeb browser · Google

CVE-2017-15405

HIGH · 7.0 CVSS v3.0 Published 2019-01-09
Fix available
A fix is available. Upgrade to 61.0.3163.113 or later.
See remediation →
72/100
Remediation priority · Elevated
Zero-click

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
Inappropriate symlink handling and a race condition in the stateful recovery feature implementation could lead to a persistance established by a malicious code running with root privileges in cryptohomed in Google Chrome on Chrome OS prior to 61.0.3163.113 allowed a local attacker to execute arbitrary code 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 · moderate confidence

Vulnerability in Chrome OS cryptohomed daemon involving inappropriate symlink handling and a race condition in the stateful recovery feature. Allows a local attacker with existing root privileges in cryptohomed to establish persistence and execute arbitrary code via a crafted HTML page. Fixed in Chrome OS version 61.0.3163.113.

MitigationUpdate Chrome OS to version 61.0.3163.113 or later. The vulnerability is in the cryptohomed system daemon, so no application-level changes are applicable.

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:< 61.0.3163.113

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
Local
Complexity
High
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.0/AV:L/AC:H/PR:L/UI:N/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://settings/help or use 'google-chrome --version' command in terminal
    Affected if The displayed version is earlier than 61.0.3163.113
  2. Verify cryptohomed daemon status
    On Chrome OS, check if cryptohomed daemon is running via 'ps aux | grep cryptohomed' or review system daemon status
    Affected if cryptohomed daemon is active (required condition for exploitation)
  3. Check for stateful recovery configuration
    Inspect /home/.shadow/recovery directory or recovery configuration files for symlinks related to stateful recovery
    Affected if Symlinks exist in recovery paths without proper ownership checks (vulnerable configuration)

A system is affected if Chrome OS version is earlier than 61.0.3163.113 and the cryptohomed daemon with stateful recovery feature is in use by a privileged attacker.

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 61.0.3163.113 or later
Fixed in 61.0.3163.113
Interim mitigation

Update Chrome OS to version 61.0.3163.113 or later. The vulnerability is in the cryptohomed system daemon, so no application-level changes are applicable.

Fix this in Chrome Scoped from the published advisory
  • Consultation1.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
5.0 hours of engineering $860
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,376.

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-2017-15405 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