CVE intelligence and bounded remediation

CVE-2019-7632 — Lifesize Team 220 Firmware security vulnerability

High CVSS 9

LifeSize Team, Room, Passport, and Networker 220 devices allow Authenticated Remote OS Command Injection, as demonstrated by shell metacharacters in the support/mtusize.php mtu_size parameter. The lifesize default password for the cli account may sometimes be used for authentication.

Severity
High
CVSS
9 (2.0)
Published
2019-02-08
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-78

Affected products

  • lifesize / team_220_firmware
  • lifesize / passport_220_firmware
  • lifesize / networker_220_firmware
  • lifesize / room_220_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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