ChromeWeb browser · Google
CVE-2017-15390
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 · uneditedInsufficient Policy Enforcement in Omnibox in Google Chrome prior to 62.0.3202.62 allowed a remote attacker to perform domain spoofing via IDN homographs in a crafted domain name.
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 confidenceThis vulnerability in Google Chrome's Omnibox (address bar) allowed attackers to perform IDN homograph attacks. Attackers could register domains using lookalike characters from different scripts (e.g., Cyrillic 'а' instead of Latin 'a') to impersonate legitimate domains and deceive users.
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
< 62.0.3202.62
Debian LinuxOperating system
= 8.0= 9.0CVSS 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
- None
- Integrity
- High
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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 checksWork through these to decide whether this CVE applies to you.
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Check installed Google Chrome versionNavigate to chrome://settings/help or run 'google-chrome --version' in terminalAffected if Version is earlier than 62.0.3202.62
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Verify Debian package version (Debian systems only)Run 'dpkg -l | grep google-chrome' or 'apt-cache policy google-chrome-stable'Affected if Installed version is earlier than 62.0.3202.62-1
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Test IDN homograph display behaviorNavigate to an IDN domain using lookalike characters (e.g., a domain with Cyrillic 'а' instead of Latin 'a') and observe how the address bar displays itAffected if The browser displays the domain in native script rather than punycode format (xn--...) without warning
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Check Chrome Homograph Policy settingInspect Chrome policy settings at chrome://policy or check for 'UrlLoadingWithKeyboardFocus' and 'SafeBrowsingSuspiciousSiteTrigger' registry/group policy configurationsAffected if Homograph protection policies are not enabled or configured
A user is affected if Google Chrome version is earlier than 62.0.3202.62 and IDN domains display in their native script without punycode conversion or warning.
Generated from the published advisory. Verify against your own configuration.
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 data62.0.3202.62
Update Google Chrome to version 62.0.3202.62 or later. Alternatively, implement browser configuration policies that enforce display of punycode for IDN domains or enable Chrome's built-in homograph attack protections.
Fix this in Chrome
Scoped from the published advisory
- Consultation1.0 h
- Testing1.0 h
- Review / QA1.0 h
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
Free · runs locallyCheck whether your project pulls in CVE-2017-15390 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2017-15390 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
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