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Manageengine Applications ManagerApplication · Zohocorp

CVE-2018-11808

CRITICAL · 9.1 CVSS v3.0 Published 2018-06-06
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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
Incorrect Access Control in CustomFieldsFeedServlet in Zoho ManageEngine Applications Manager Version 13 before build 13740 allows an attacker to delete any file and read certain files on the server in the context of the user (which by default is "NT AUTHORITY / SYSTEM") by sending a specially crafted request to the server.

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

Zoho ManageEngine Applications Manager version 13 before build 13740 contains an incorrect access control vulnerability in the CustomFieldsFeedServlet component. The vulnerability allows unauthenticated attackers to send specially crafted requests that can delete arbitrary files and read sensitive files on the server. The attack executes with NT AUTHORITY/SYSTEM privileges, giving the attacker full control over the affected Windows host.

MitigationApply the vendor patch by upgrading to Applications Manager build 13740 or later. If immediate patching is not possible, restrict network access to the affected servlet endpoint and monitor for suspicious file access patterns.

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
Manageengine Applications ManagerApplication
Affected:= 13

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
None

CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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. Confirm Applications Manager installation
    Locate the ManageEngine Applications Manager installation directory. On Windows, common paths include C:\ManageEngine\ApplicationsManager or C:\Program Files\ManageEngine\ApplicationsManager. Check for the presence of run.bat, start.bat, or the main executable.
    Affected if Applications Manager is installed on the system
  2. Check installed build version
    Open the file 'buildnum.txt' in the Applications Manager installation directory, or access the product's 'About' page in the admin console. Compare the build number to 13740.
    Affected if Build number is less than 13740 (e.g., 13690, 13600, etc.)
  3. Identify if CustomFieldsFeedServlet is exposed
    Check network accessibility of the endpoint /feed/CustomFieldsFeedServlet. This can be done by reviewing web server configuration files in the conf directory or attempting a local HTTP request to http://localhost:8080/feed/CustomFieldsFeedServlet (adjust port if different).
    Affected if The servlet endpoint is reachable and responds to requests
  4. Verify Windows platform and service context
    Confirm the operating system is Windows. Check the service configuration in Windows Services (services.msc) to see if Applications Manager runs under NT AUTHORITY/SYSTEM or another high-privilege account.
    Affected if Applications Manager runs on Windows as NT AUTHORITY/SYSTEM service

The environment is affected if Zoho ManageEngine Applications Manager version 13 is installed with a build number below 13740 on a Windows host where the CustomFieldsFeedServlet endpoint is accessible.

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.

dbcve · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply the vendor patch by upgrading to Applications Manager build 13740 or later. If immediate patching is not possible, restrict network access to the affected servlet endpoint and monitor for suspicious file access patterns.

Recommended fix High confidence

Applications Manager Version 13 build 13740 or later

  1. 1. Log in to the ManageEngine Applications Manager administrative console.
  2. 2. Navigate to the 'Help' or 'About' section to verify the current build number.
  3. 3. If the build number is below 13740, initiate the upgrade process.
  4. 4. Download the latest build (13740 or later) from the official ManageEngine support portal at www.manageengine.com.
  5. 5. Back up the current Applications Manager installation and database before proceeding with the upgrade.
  6. 6. Run the upgrade installer and follow the on-screen prompts to complete the update.
  7. 7. After installation, verify the build number has been updated to 13740 or higher.
  8. 8. Test that the CustomFieldsFeedServlet functionality is working correctly after the upgrade.

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Manageengine Applications Manager Scoped from the published advisory
  • Consultation4.0 h
  • Implementation8.0 h
  • Testing8.0 h
  • Review / QA4.0 h
24.0 hours of engineering $4,160
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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-2018-11808 in production — separate from our analysis above.

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What this is

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What belongs here
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  • Version or environment caveats, and links to real fixes
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