CVE intelligence and bounded remediation

CVE-2020-3412 — Cisco Webex Meetings Online security vulnerability

Medium CVSS 4.3

A vulnerability in the scheduled meeting template feature of Cisco Webex Meetings could allow an authenticated, remote attacker to create a scheduled meeting template that would belong to another user in their organization. The vulnerability is due to insufficient authorization enforcement for the creation of scheduled meeting templates. An attacker could exploit this vulnerability by sending a crafted request to the Webex Meetings interface to create a scheduled meeting template. A successful exploit could allow the attacker to create a scheduled meeting template that would belong to a user other than themselves.

Severity
Medium
CVSS
4.3 (3.1)
Published
2020-08-17
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-284, CWE-863

Affected products

  • cisco / webex_meetings_online

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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