CVE-2017-16767
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 · uneditedCross-site scripting (XSS) vulnerability in User Profile in Synology Surveillance Station before 8.1.2-5469 allows remote authenticated users to inject arbitrary web script or HTML via the userDesc parameter.
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 is a stored Cross-Site Scripting (XSS) vulnerability in Synology Surveillance Station's User Profile functionality. An authenticated remote attacker can inject malicious JavaScript or HTML code through the userDesc parameter, which gets stored and executed when other users view the affected profile.
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< 8.1.2-5469CVSS 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
- Low
- User interaction
- Required
- Scope
- Changed
- Confidentiality
- Low
- Integrity
- Low
- Availability
- None
CVSS:3.0/AV:N/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
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Confirm Synology Surveillance Station is installedCheck if the Synology Surveillance Station package is installed on the Synology NAS deviceAffected if If the package is present on the system
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Determine the installed versionCheck the installed version of Synology Surveillance Station through the package center or the application itselfAffected if If the version is below 8.1.2-5469
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Verify authenticated user access to User ProfileConfirm that authenticated users have access to modify their User Profile settings where the userDesc parameter existsAffected if If authenticated users can access and modify their profile description field
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Inspect userDesc parameter handlingExamine whether the userDesc field in the User Profile accepts and stores HTML or JavaScript input without sanitizationAffected if If the userDesc field stores unsanitized input that could be executed when viewed by other users
A user is affected if Synology Surveillance Station is installed with a version lower than 8.1.2-5469 and authenticated users can access the User Profile feature where malicious userDesc input could be stored and executed.
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 data8.1.2-5469
Upgrade Synology Surveillance Station to version 8.1.2-5469 or later. As a temporary workaround, restrict administrative access to trusted users only and implement input validation on the userDesc field.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Free · runs locallyCheck whether your project pulls in CVE-2017-16767 — 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-2017-16767 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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- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
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