CVE-2020-36892
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 · uneditedEibiz i-Media Server Digital Signage 3.8.0 contains an unauthenticated privilege escalation vulnerability in the updateUser object that allows attackers to modify user roles. Attackers can exploit the /messagebroker/amf endpoint to elevate privileges and take over user accounts by manipulating role settings without authentication.
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 confidenceEibiz i-Media Server Digital Signage 3.8.0 has an unauthenticated privilege escalation vulnerability in the updateUser object. Attackers can exploit the /messagebroker/amf endpoint to modify user role settings without any authentication, allowing them to elevate privileges to admin and take over user accounts.
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= 3.8.0CVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:N/AC:L/PR:N/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 checksWork through these to decide whether this CVE applies to you.
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Identify Eibiz i-Media Server installationLocate the application installation directory or check running services for 'Eibiz', 'i-Media', or 'Digital Signage' components. Common paths may include C:\Program Files\Eibiz or /opt/eibiz on Linux systems.Affected if The software is present on the system
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Confirm installed version is 3.8.0Check version information in the application about page, installation logs, or service properties. Compare against the affected version 3.8.0 specifically.Affected if The installed version is exactly 3.8.0
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Verify /messagebroker/amf endpoint is exposedInspect web server configuration files (such as web.xml, server.xml, or nginx/apache config) to determine if the /messagebroker/amf endpoint is mapped and accessible. Check network ACLs or firewall rules for this endpoint.Affected if The endpoint is reachable from the network without authentication filters
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Check for authentication on updateUser functionReview application configuration or security settings for the updateUser object or AMF messaging handler. Verify whether authentication is required before processing updateUser requests.Affected if No authentication or authorization control is enforced on the updateUser function
The environment is affected only if Eibiz i-Media Server Digital Signage version 3.8.0 is running with the /messagebroker/amf endpoint exposed and the updateUser function accessible without authentication.
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 dataApply vendor patches if available; otherwise, restrict network access to the /messagebroker/amf endpoint or implement authentication/authorization controls on the updateUser function.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA3.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-36892 — 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-2020-36892 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
- No weaponised exploit code, or anything meant to cause harm
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