dbcve.org
CellosOperating system · Cellopoint

CVE-2020-17386

MEDIUM · 6.5 CVSS v3.1 Published 2020-08-25
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
71/100
Remediation priority · Elevated
Remotely reachable 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
Cellopoint CelloOS v4.1.10 Build 20190922 does not validate URL inputted properly. With cookie of an authenticated user, attackers can temper with the URL parameter and access arbitrary file on system.

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 · moderate confidence

Cellopoint CelloOS v4.1.10 contains a path traversal vulnerability in URL parameter handling. An authenticated attacker can manipulate the URL parameter to read arbitrary files from the filesystem, potentially exposing sensitive system files, configuration data, or credentials.

MitigationImplement strict input validation on all URL parameters, using allowlist validation and canonicalization to prevent path traversal sequences. Restrict file access to intended directories and validate user session cookies for all sensitive operations.

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
CellosOperating system
Affected:= 4.1.10

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
Low
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/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 Cellopoint CelloOS installation
    Identify if Cellopoint CelloOS is installed in your environment. Check system inventory, running services, or installed applications for the Cellopoint product.
    Affected if Cellopoint CelloOS is present on the system
  2. Verify installed version is 4.1.10
    Locate and inspect the installed CelloOS version. Check the web interface version display, system information files, or use the product's admin console to determine the exact version number.
    Affected if The installed version is exactly 4.1.10
  3. Confirm web interface is accessible
    Verify that the CelloOS web interface is exposed and reachable. Check if port 443, 80, or the configured web service port is listening and accessible.
    Affected if The web interface is accessible and accepting connections
  4. Check authentication configuration
    Review the authentication settings for the CelloOS web interface. Determine whether user session management and authentication mechanisms are enabled and properly configured.
    Affected if User authentication is enabled for the web interface (required for exploitation)
  5. Inspect URL parameter handling
    Examine the web server configuration and application logs for URL parameter processing. Look for path traversal patterns in request handling that may indicate the vulnerability is present.
    Affected if URL parameters are processed without proper validation (vulnerability is triggered)
  6. Review file access controls
    Check file system permissions and access controls on the CelloOS host. Determine if the web application process has access to directories outside the intended web root.
    Affected if File system restrictions are insufficient, allowing arbitrary file access

You are affected if Cellopoint CelloOS version 4.1.10 is installed with its web interface accessible and user authentication enabled, as the path traversal vulnerability in URL parameter handling can be exploited by an authenticated attacker to read arbitrary files.

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

Implement strict input validation on all URL parameters, using allowlist validation and canonicalization to prevent path traversal sequences. Restrict file access to intended directories and validate user session cookies for all sensitive operations.

Fix this in Cellos Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
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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-2020-17386 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
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