Data Center Network ManagerApplication · Cisco
CVE-2020-3114
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 · uneditedA vulnerability in the web-based management interface of Cisco Data Center Network Manager (DCNM) could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack on an affected system. The vulnerability is due to insufficient CSRF protections for the web-based management interface on an affected device. An attacker could exploit this vulnerability by persuading a user of the interface to follow a malicious link while having an active session on an affected device. A successful exploit could allow the attacker to perform arbitrary actions with the privilege level of the targeted user.
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 confidenceCisco Data Center Network Manager (DCNM) web interface lacks proper CSRF token validation, allowing attackers to craft malicious links that force authenticated users to perform unintended actions. The vulnerability is exploitable remotely without authentication by tricking users with active sessions into clicking malicious URLs.
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
Data Center Network ManagerApplication
< 11.3\(1\)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
- Network
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/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.
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Confirm DCNM is installedCheck if Cisco Data Center Network Manager is running in your environment by accessing the web interface URL (typically https://<dcnm-host>) or checking for the dcnm service process on the host.Affected if DCNM is accessible and running in your environment.
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Identify installed DCNM versionLog into the DCNM web interface and navigate to the About or Administration > System > Inventory page to view the installed version number. Alternatively, check the version via CLI if you have direct access to the DCNM server.Affected if The installed version is displayed as anything lower than 11.3(1).
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Verify web interface is enabledConfirm the DCNM web interface (HTTP/HTTPS) is enabled and accessible by attempting to reach the login page.Affected if The web interface is accessible and accepts user authentication sessions.
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Check for active user sessionsReview active authenticated sessions on DCNM by checking the Sessions or Active Users panel in the web interface Administration section.Affected if Users have active authenticated sessions logged into DCNM.
You are affected if DCNM is running with a web interface version lower than 11.3(1) and users have active authenticated sessions, as the CSRF protection gap can be exploited via malicious links.
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 data11.3
Apply Cisco's vendor patches for CVE-2020-3114. Until patched, users should avoid clicking untrusted links and should log out of DCNM sessions when not in use.
Fix this in Data Center Network Manager
Scoped from the published advisory
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,960.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2020-3114 — 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-2020-3114 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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