CVE intelligence and bounded remediation

CVE-2023-44410 — D-Link D-View showUsers Improper Authorization Privilege Escalation Vulnerability

High CVSS 8.8

D-Link D-View showUsers Improper Authorization Privilege Escalation Vulnerability. This vulnerability allows remote attackers to escalate privileges on affected installations of D-Link D-View. Authentication is required to exploit this vulnerability. The specific flaw exists within the showUsers method. The issue results from the lack of proper authorization before accessing a privileged endpoint. An attacker can leverage this vulnerability to escalate privileges to resources normally protected from the user. . Was ZDI-CAN-19535.

Severity
High
CVSS
8.8 (3.0)
Published
2024-05-03
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-285

Affected products

  • dlink / d-view_8 / 1.0.2.13

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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