// For flags

CVE-2020-15228

Environment Variable Injection in GitHub Actions

Severity Score

5.0
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

2
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

In the `@actions/core` npm module before version 1.2.6,`addPath` and `exportVariable` functions communicate with the Actions Runner over stdout by generating a string in a specific format. Workflows that log untrusted data to stdout may invoke these commands, resulting in the path or environment variables being modified without the intention of the workflow or action author. The runner will release an update that disables the `set-env` and `add-path` workflow commands in the near future. For now, users should upgrade to `@actions/core v1.2.6` or later, and replace any instance of the `set-env` or `add-path` commands in their workflows with the new Environment File Syntax. Workflows and actions using the old commands or older versions of the toolkit will start to warn, then error out during workflow execution.

En el módulo npm "@actions/core" versiones anteriores a 1.2.6, las funciones "addPath" y "exportVariable" se comunican con Actions Runner a través de stdout al generar una cadena en un formato específico. Los flujos de trabajo que registran datos no confiables en stdout pueden invocar estos comandos, resultando que la ruta o las variables de entorno sean modificadas sin la intención del flujo de trabajo o el autor de la acción. El corredor lanzará una actualización que deshabilita los comandos de flujo de trabajo "set-env" y "add-path" en un futuro cercano. Por ahora, los usuarios deben actualizar a "@actions/core v1.2.6" o posterior, y reemplazar cualquier instancia de los comandos "set-env" o "add-path" en sus flujos de trabajo con la nueva sintaxis de archivo de entorno. Los flujos de trabajo y las acciones que utilizan los comandos antiguos o las versiones antiguas del kit de herramientas comenzarán a advertir y luego aparecerán errores durante la ejecución del flujo de trabajo

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
None
Integrity
Low
Availability
None
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Changed
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
None
Integrity
Partial
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-06-25 CVE Reserved
  • 2020-10-01 CVE Published
  • 2020-11-16 First Exploit
  • 2024-01-18 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-20: Improper Input Validation
  • CWE-77: Improper Neutralization of Special Elements used in a Command ('Command Injection')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Toolkit Project
Search vendor "Toolkit Project"
 Toolkit
Search vendor "Toolkit Project" for product "Toolkit"
 < 1.2.6
Search vendor "Toolkit Project" for product "Toolkit" and version " < 1.2.6"
node.js
Affected