CVE intelligence and bounded remediation

CVE-2023-6929 — Eurotel Etl3100 Firmware security vulnerability

Critical CVSS 9.8

EuroTel ETL3100 versions v01c01 and v01x37 are vulnerable to insecure direct object references that occur when the application provides direct access to objects based on user-supplied input. As a result of this vulnerability, attackers can bypass authorization, access the hidden resources on the system, and execute privileged functionalities.

Severity
Critical
CVSS
9.8 (3.1)
Published
2023-12-19
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-639

Affected products

  • eurotel / etl3100_firmware / 01c01
  • eurotel / etl3100_firmware / 01x37

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

Check exposure

  • Map object and action authorization checks across API, UI, batch, import/export, and background-job paths.
  • Identify tenant, ownership, role, and policy boundaries for affected resources and administrative operations.
  • Use synthetic fixtures to compare intended access matrices without accessing another user's real data.

Remediate safely

  • Enforce server-side authorization at each resource access and state transition using the authenticated principal and trusted tenant context.
  • Scope data queries by tenant and ownership; treat client-supplied identifiers, roles, and policy claims as untrusted.
  • Add deny-by-default policy tests for horizontal and vertical access across every affected transport.

Authoritative sources

Complete CVE record and remediation plan

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