CVE intelligence and bounded remediation

CVE-2019-3933 — Crestron Am-100 Firmware security vulnerability

Medium CVSS 5.3

Crestron AM-100 with firmware 1.6.0.2 and AM-101 with firmware 2.7.0.2 allows anyone to bypass the presentation code simply by requesting /images/browserslide.jpg via HTTP. A remote, unauthenticated attacker can use this vulnerability to watch a slideshow without knowing the access code.

Severity
Medium
CVSS
5.3 (3.1)
Published
2019-04-30
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-284, CWE-425

Affected products

  • crestron / am-100_firmware / 1.6.0.2
  • crestron / am-101_firmware / 2.7.0.2

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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