CVE-2017-1000217
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 · uneditedOpencast 2.3.2 and older versions are vulnerable to script injections through media and metadata in the player and media module resulting in arbitrary code execution, fixed in 2.3.3 and 3.0.
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 confidenceOpencast versions 2.3.2 and older contain a stored cross-site scripting (XSS) vulnerability in the media player and media module. Attackers can inject malicious scripts through media files and their metadata, which then executes in the context of other users' browsers when the media is played, enabling arbitrary JavaScript execution.
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<= 2.3.2CVSS 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 checksWork through these to decide whether this CVE applies to you.
-
Identify Opencast installation and versionCheck the Opencast administrative interface or examine the installed package/version file to determine the running version of Opencast. This is typically visible in the admin dashboard under 'System' or 'About' information.Affected if The installed version is 2.3.2 or any version older than 2.3.2 (including all 2.x versions prior to 2.3.2).
-
Confirm media module is enabledReview the Opencast configuration to verify that the media module (media package) is loaded and active. This can be checked in the admin interface under 'Modules' or by examining the active OSGi bundles and services.Affected if The media module is enabled and processing user-uploaded media files.
-
Check for user-uploaded media contentExamine the Opencast media directory and workflow instances to identify if there are any media files that were uploaded by users, particularly those with custom metadata or filenames.Affected if User-uploaded media files exist in the system that could contain malicious metadata.
-
Review media metadata handlingInspect the media player configuration and any custom metadata processing workflows to determine if input validation and output encoding are being applied to media metadata before rendering in the player.Affected if Media metadata is rendered in the player without proper sanitization or encoding.
A system is affected if it runs Opencast version 2.3.2 or older, has the media module enabled, and processes user-uploaded media without proper input validation on metadata displayed in the media player.
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 dataUpgrade Opencast to version 2.3.3 or 3.0 to receive the security patch. If immediate upgrade is not feasible, implement input validation and output encoding on media metadata before rendering in the player.
- Consultation2.0 h
- Implementation4.0 h
- Testing3.0 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 $2,800.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2017-1000217 — 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-2017-1000217 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
Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.
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.
- 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