CVE intelligence and bounded remediation

CVE-2018-0424 — Cisco Rv110W Firmware security vulnerability

High CVSS 9

A vulnerability in the web-based management interface of the Cisco RV110W Wireless-N VPN Firewall, Cisco RV130W Wireless-N Multifunction VPN Router, and Cisco RV215W Wireless-N VPN Router could allow an authenticated, remote attacker to execute arbitrary commands. The vulnerability is due to improper validation of user-supplied input to scripts by the web-based management interface. An attacker could exploit this vulnerability by sending malicious requests to a targeted device. A successful exploit could allow the attacker to execute arbitrary commands with the privileges of the root user.

Severity
High
CVSS
9 (2.0)
Published
2018-10-05
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-77, CWE-78

Affected products

  • cisco / rv110w_firmware
  • cisco / rv130w_firmware
  • cisco / rv215w_firmware

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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