CVE intelligence and bounded remediation

CVE-2020-28884 — Liferay Portal Server tested on 7.3.5 GA6, 7.2.0 GA1 is affected by OS Command Injection

High CVSS 9

Liferay Portal Server tested on 7.3.5 GA6, 7.2.0 GA1 is affected by OS Command Injection. An administrator user can inject Groovy script to execute any OS command on the Liferay Portal Sever. NOTE: The developer disputes this as a vulnerability since it is a feature for administrators to run groovy scripts and therefore not a design flaw.

Severity
High
CVSS
9 (2.0)
Published
2022-01-28
CISA KEV
Not currently listed
Ecosystem
software/application
Weaknesses
CWE-78

Affected products

  • liferay / liferay_portal / 7.2
  • liferay / liferay_portal / 7.3.5

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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