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Improper Input ValidationWeakness · CWE-20

CVE-2024-25656

MEDIUM · 5.9 CVSS v3.1 Published 2024-03-18
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
68/100
Remediation priority · Elevated
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
Improper input validation in AVSystem Unified Management Platform (UMP) 23.07.0.16567~LTS can result in unauthenticated CPE (Customer Premises Equipment) devices storing arbitrarily large amounts of data during registration. This can potentially lead to DDoS attacks on the application database and, ultimately, affect the entire product.

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

Improper input validation in AVSystem Unified Management Platform (UMP) version 23.07.0.16567~LTS allows unauthenticated CPE devices to store arbitrarily large amounts of data during the registration process. This creates a resource exhaustion vulnerability where an attacker can flood the application database with excessive data, potentially enabling DDoS attacks against the database and impacting the availability of the entire platform.

MitigationImplement strict input validation and size limits on CPE device registration endpoints, enforce authentication requirements for registration, and consider implementing rate limiting to prevent abuse. Apply vendor-provided patches when available.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

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

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/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 AVSystem UMP installation
    Locate the UMP installation directory and check for unified-management-platform or ump processes running on the system. Common paths include /opt/avsystem/ump or C:\Program Files\AVSystem\UMP on Windows.
    Affected if The system is running AVSystem Unified Management Platform (UMP)
  2. Check UMP version against affected release
    Run the version check command for your UMP installation (typically via admin console, about page, or command line: umpctl --version or similar). Compare the installed version to 23.07.0.16567~LTS.
    Affected if Installed version equals or is earlier than 23.07.0.16567~LTS (or falls within the ~LTS range before patching)
  3. Verify CPE registration endpoint exposure
    Inspect network configuration and UMP service settings to confirm whether the CPE device registration endpoint (typically /api/device/register or similar) is accessible without authentication. Check firewall rules and UMP access control lists.
    Affected if CPE registration endpoint allows unauthenticated access from network locations
  4. Check input validation configuration on registration
    Review UMP configuration files (commonly in conf/ or config/ directories) for registration handler settings. Look for parameters controlling input length, data size limits, or validation rules on registration payloads.
    Affected if No input size limits or validation rules are defined for CPE registration data fields
  5. Monitor database growth from registration operations
    Query database storage metrics or logs for registration-related insert operations. Check if registration data (device info, certificates, profiles) shows unusually large payload sizes or excessive volume from single sources.
    Affected if Database shows large or excessive registration data stored from unauthenticated requests

A system is affected if it runs AVSystem UMP version 23.07.0.16567~LTS or earlier with unauthenticated CPE registration endpoint exposed and lacking input size validation on registration data.

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 and size limits on CPE device registration endpoints, enforce authentication requirements for registration, and consider implementing rate limiting to prevent abuse. Apply vendor-provided patches when available.

Have this fixed Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
30.0 hours of engineering $5,280
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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-2024-25656 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
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  • Version or environment caveats, and links to real fixes
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