Vulnerability Monitor

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CVE-2019-20374

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.

Published

2020-01-09T23:15:10.367

Last Modified

2024-11-21T04:38:19.910

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 9.6 (CRITICAL)

CVSSv2 Vector

AV:N/AC:M/Au:N/C:P/I:P/A:P

  • Access Vector: NETWORK
  • Access Complexity: MEDIUM
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: PARTIAL
  • Availability Impact: PARTIAL
Exploitability Score

8.6

Impact Score

6.4

Weaknesses
  • Type: Primary
    CWE-79
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application typora typora ≤ 0.9.81 Yes
Operating System linux linux_kernel - No
Application typora typora ≤ 0.9.9.31.2 Yes
Operating System apple macos - No
References