CVE intelligence and bounded remediation

CVE-2018-0338 — Cisco Unified Computing System security vulnerability

High CVSS 7.8

A vulnerability in the role-based access-checking mechanisms of Cisco Unified Computing System (UCS) Software could allow an authenticated, local attacker to execute arbitrary commands on an affected system. The vulnerability exists because the affected software lacks proper input and validation checks for certain file systems. An attacker could exploit this vulnerability by issuing crafted commands in the CLI of an affected system. A successful exploit could allow the attacker to cause other users to execute unwanted arbitrary commands on the affected system. Cisco Bug IDs: CSCvf52994.

Severity
High
CVSS
7.8 (3.1)
Published
2018-06-07
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-20, CWE-863

Affected products

  • cisco / unified_computing_system / 5.5(203)
  • cisco / unified_computing_system / 7.0(0)bz(0.46)
  • cisco / unified_computing_system / 9.0(100.20)b
  • cisco / unified_computing_system / 9.1(1.13)
  • cisco / unified_computing_system / 9.9(0.902)

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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