// For flags

CVE-2020-14000

 

Severity Score

9.8
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

MIT Lifelong Kindergarten Scratch scratch-vm before 0.2.0-prerelease.20200714185213 loads extension URLs from untrusted project.json files with certain _ characters, resulting in remote code execution because the URL's content is treated as a script and is executed as a worker. The responsible code is getExtensionIdForOpcode in serialization/sb3.js. The use of _ is incompatible with a protection mechanism in older versions, in which URLs were split and consequently deserialization attacks were prevented. NOTE: the scratch.mit.edu hosted service is not affected because of the lack of worker scripts.

MIT Lifelong Kindergarten Scratch scratch-vm versiones anteriores a 0.2.0-prerelease.20200714185213, carga una URL de extensión de archivos project.json no confiables con determinados caracteres _, resultando en una ejecución de código remota porque el contenido de la URL es tratado como un script y es ejecutado como un trabajador. El código responsable es getExtensionIdForOpcode en serialization/sb3.js. El uso de _ es incompatible con un mecanismo de protección en versiones anteriores, en las que las URL fueron divididas y, en consecuencia, los ataques de deserialización fueron impedidos. NOTA: el servicio alojado scratch.mit.eduno está afectado por la falta de scripts de trabajo

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-06-10 CVE Reserved
  • 2020-06-11 First Exploit
  • 2020-07-16 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-08-25 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
  • CWE-502: Deserialization of Untrusted Data
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Mit
Search vendor "Mit"
 Scratch-vm
Search vendor "Mit" for product "Scratch-vm"
 < 0.2.0-prerelease.20200714185213
Search vendor "Mit" for product "Scratch-vm" and version " < 0.2.0-prerelease.20200714185213"
-
Affected