CVE intelligence and bounded remediation

CVE-2018-0324 — Cisco Network Functions Virtualization Infrastructure security vulnerability

Medium CVSS 6.7

A vulnerability in the CLI of Cisco Enterprise NFV Infrastructure Software (NFVIS) could allow an authenticated, high-privileged, local attacker to perform a command injection attack. The vulnerability is due to insufficient input validation of command parameters in the CLI parser. An attacker could exploit this vulnerability by invoking a vulnerable CLI command with crafted malicious parameters. An exploit could allow the attacker to execute arbitrary commands with a non-root user account on the underlying Linux operating system of the affected device. Cisco Bug IDs: CSCvi09723.

Severity
Medium
CVSS
6.7 (3.1)
Published
2018-05-17
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-77, CWE-78

Affected products

  • cisco / network_functions_virtualization_infrastructure / 3.6.1
  • cisco / network_functions_virtualization_infrastructure / 3.6.2
  • cisco / network_functions_virtualization_infrastructure / 3.7.1

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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