CVE intelligence and bounded remediation

CVE-2019-1000017 — Chamilo Chamilo Lms security vulnerability

Medium CVSS 6.5

Chamilo Chamilo-lms version 1.11.8 and earlier contains an Incorrect Access Control vulnerability in Tickets component that can result in an authenticated user can read all tickets available on the platform, due to lack of access controls. This attack appears to be exploitable via ticket_id=[ticket number]. This vulnerability appears to have been fixed in 1.11.x after commit 33e2692a37b5b6340cf5bec1a84e541460983c03.

Severity
Medium
CVSS
6.5 (3.0)
Published
2019-02-04
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-862

Affected products

  • chamilo / chamilo_lms

Matched remediation archetype

Authorization bypass, IDOR, and cross-tenant access

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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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