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Ios XeOperating system · Cisco

CVE-2019-12624

HIGH · 8.8 CVSS v3.0 Published 2019-08-21
Fix available
A fix is available. Upgrade to after 3.11.xe or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges

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 · unedited
A vulnerability in the web-based management interface of Cisco IOS XE New Generation Wireless Controller (NGWC) could allow an unauthenticated, remote attacker to conduct a cross-site request forgery (CSRF) attack and perform arbitrary actions on an affected device. The vulnerability is due to insufficient CSRF protections for the web-based management interface of the affected software. An attacker could exploit this vulnerability by persuading a user of the interface to follow a crafted link. A successful exploit could allow the attacker to perform arbitrary actions on an affected device by using a web browser and with the privileges of the 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 confidence

This is a CSRF (Cross-Site Request Forgery) vulnerability in Cisco IOS XE NGWC web-based management interface. The flaw stems from insufficient anti-CSRF protections, allowing an unauthenticated attacker to trick authenticated users into executing unintended actions via malicious links. Successful exploitation grants the attacker arbitrary administrative actions with the victim's privileges.

MitigationImplement anti-CSRF tokens for all state-changing operations (POST/PUT/DELETE) in the web interface and validate the Origin/Referer headers server-side. Alternatively, enable Clickjacking protection via X-Frame-Options header and deploy a WAF rule set to mitigate CSRF attacks until the vendor patch is applied.

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
Ios XeOperating system
Affected:>= 3.0.xe, <= 3.11.xe

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:3.0/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 checks

Work through these to decide whether this CVE applies to you.

  1. Identify the device and software platform
    Run 'show version' or 'show running-config | include platform' to confirm the device runs Cisco IOS XE and includes the NGWC (Next Generation Wireline Controller) platform.
    Affected if The device is not running Cisco IOS XE with NGWC platform.
  2. Check if the web-based management interface is enabled
    Run 'show ip http server status' or 'show running-config | include ip http' to see if the HTTP/HTTPS management interface is active.
    Affected if The web interface is enabled (HTTP or HTTPS server is active). CSRF only applies when the web interface is accessible.
  3. Determine the installed IOS XE version
    Run 'show version' and locate the version string (for example, 'Version 3.7.1' or 'Version 3.10.5'). Compare this version against the affected range: 3.0.xe through 3.11.xe.
    Affected if The installed version falls within 3.0.xe through 3.11.xe inclusive.
  4. Inspect web responses for anti-CSRF protections
    Use a browser or curl to access the web management login page over HTTPS, then log in and inspect a POST request (such as a configuration change). Look for a_csrf_token parameter or similar anti-CSRF token in the request body or headers.
    Affected if No anti-CSRF token is present in state-changing requests, or the Origin/Referer headers are not validated server-side (this requires manual testing or code review).

You are affected if the device runs Cisco IOS XE NGWC with the web interface enabled and the installed version is between 3.0.xe and 3.11.xe inclusive, and state-changing web requests lack anti-CSRF token validation.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 data
Upgrade available Upgrade to a release after 3.11.xe
Interim mitigation

Implement anti-CSRF tokens for all state-changing operations (POST/PUT/DELETE) in the web interface and validate the Origin/Referer headers server-side. Alternatively, enable Clickjacking protection via X-Frame-Options header and deploy a WAF rule set to mitigate CSRF attacks until the vendor patch is applied.

Fix this in Ios Xe Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing4.0 h
  • Review / QA2.0 h
18.0 hours of engineering $3,200
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Scan for this in your stack

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2019-12624 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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