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Unified Communications ManagerApplication · Cisco

CVE-2019-1915

MEDIUM · 6.5 CVSS v3.1 Published 2019-10-02
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
72/100
Remediation priority · Elevated
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 interface of Cisco Unified Communications Manager, Cisco Unified Communications Manager Session Management Edition (SME), Cisco Unified Communications Manager IM and Presence (Unified CM IM&P) Service, and Cisco Unity Connection 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 by the affected software. An attacker could exploit this vulnerability by persuading a targeted user to click a malicious link. A successful exploit could allow the attacker to send arbitrary requests that could change the password of a targeted user. An attacker could then take unauthorized actions on behalf 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 confidence

This is a cross-site request forgery (CSRF) vulnerability in the web-based management interfaces of Cisco Unified Communications Manager, Unified CM IM&P Service, and Cisco Unity Connection. The affected software lacks proper CSRF protection mechanisms (such as anti-CSRF tokens), allowing unauthenticated attackers to craft malicious links that, when clicked by an authenticated administrator, can force the browser to send arbitrary requests that change user passwords or perform other unauthorized actions.

MitigationApply the vendor-supplied patch from Cisco Security Advisory. Until patched, warn users not to click untrusted links and consider implementing additional network-level access controls to the administrative interfaces.

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
Unified Communications ManagerApplication
Affected:= 10.5\(2.10000.5\)= 11.5\(1.10000.6\)= 12.0\(1.10000.10\)= 12.5\(1.10000.22\)
Unity ConnectionApplication
Affected:= 11.5= 12.0= 12.5= 14.0
Unified Communications Manager Im And Presence ServiceApplication
Affected:= 12.5\(1\)

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
None
Integrity
High
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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 checks

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

  1. Identify the Cisco UC product
    Log into the server CLI or check the installed applications to determine if the system is running Cisco Unified Communications Manager (CUCM), Cisco Unity Connection, or Unified CM IM&P Service. Common CLI command: 'show version active' or check the application inventory.
    Affected if The system runs any of the three affected products: CUCM, Unity Connection, or IM&P Service.
  2. Determine the installed version
    Run the CLI command 'show version' or access the Cisco Unified Communications Manager Administration page and navigate to 'Help > About' to retrieve the exact version number.
    Affected if The installed version matches or falls within these affected ranges: CUCM 10.5(2.10000.5), 11.5(1.10000.6), 12.0(1.10000.10), 12.5(1.10000.22); Unity Connection 11.5, 12.0, 12.5, 14.0; IM&P 12.5(1).
  3. Verify web management interface is accessible
    Confirm the Cisco web-based management interface is enabled and reachable. This is typically accessible on port 8443 or 443 (for example, https://<hostname>:8443/ccmadmin or https://<hostname>/cuadmin). Check if the web service is running via 'show web security' or similar CLI command.
    Affected if The web management interface is enabled and exposed, which is required for the CSRF vulnerability to be exploitable.
  4. Check for CSRF protection tokens
    Inspect the web forms in the management interface (such as user password change forms or admin configuration pages) by viewing the HTML source. Look for the presence of anti-CSRF tokens, hidden form fields, or unique request identifiers that validate the origin of requests. If these are missing, the system is likely vulnerable.
    Affected if The web forms lack anti-CSRF tokens or unique request validation mechanisms, indicating the vulnerability is present.

The system is affected if it runs any of the vulnerable product versions (CUCM 10.5.2 through 12.5.1, Unity Connection 11.5 through 14.0, or IM&P 12.5(1)) AND the web-based management interface is accessible without the protective anti-CSRF mechanisms in place.

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
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor-supplied patch from Cisco Security Advisory. Until patched, warn users not to click untrusted links and consider implementing additional network-level access controls to the administrative interfaces.

Fix this in Unified Communications Manager Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA2.0 h
11.0 hours of engineering $1,980
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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-2019-1915 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