// For flags

CVE-2019-20374

 

Severity Score

9.6
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

A mutation cross-site scripting (XSS) issue in Typora through 0.9.9.31.2 on macOS and through 0.9.81 on Linux leads to Remote Code Execution through Mermaid code blocks. To exploit this vulnerability, one must open a file in Typora. The XSS vulnerability is then triggered due to improper HTML sanitization. Given that the application is based on the Electron framework, the XSS leads to remote code execution in an unsandboxed environment.

Un problema de mutación de tipo cross-site scripting (XSS) en Typora versiones hasta 0.9.9.31.2 en macOS y versiones hasta 0.9.81 en Linux, conlleva a una Ejecución de Código Remota por medio de bloques de código de Mermaid. Para explotar esta vulnerabilidad, uno necesita abrir un archivo en Typora. La vulnerabilidad de tipo XSS es entonces desencadenada debido al saneamiento inapropiado de HTML. Dado que la aplicación es basada en el framework Electron, la vulnerabilidad de tipo XSS conlleva a una ejecución de código remota en un entorno sin sandbox.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
Required
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
Partial
Integrity
Partial
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-01-09 CVE Reserved
  • 2020-01-09 CVE Published
  • 2024-08-05 CVE Updated
  • 2025-02-06 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Typora
Search vendor "Typora"
 Typora
Search vendor "Typora" for product "Typora"
 <= 0.9.81
Search vendor "Typora" for product "Typora" and version " <= 0.9.81"
-
Affected
in Linux
Search vendor "Linux"
 Linux Kernel
Search vendor "Linux" for product "Linux Kernel"
--
Safe
Typora
Search vendor "Typora"
 Typora
Search vendor "Typora" for product "Typora"
 <= 0.9.9.31.2
Search vendor "Typora" for product "Typora" and version " <= 0.9.9.31.2"
-
Affected
in Apple
Search vendor "Apple"
 Macos
Search vendor "Apple" for product "Macos"
--
Safe