CVE-2023-2317

Typora DOM-Based Cross-site Scripting leading to Remote Code Execution

Severity Score

9.6

*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

*Multiple Sources

Exploited in Wild

*KEV

Decision

Attend

*SSVC

Descriptions

DOM-based XSS in updater/update.html in Typora before 1.6.7 on Windows and Linux allows a crafted markdown file to run arbitrary JavaScript code in the context of Typora main window via loading typora://app/typemark/updater/update.html in <embed> tag. This vulnerability can be exploited if a user opens a malicious markdown file in Typora, or copies text from a malicious webpage and paste it into Typora.

*Credits: Li Jiantao (@CurseRed) of STAR Labs SG Pte. Ltd. (@starlabs_sg)

CVSS Scores

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Local

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Attack Vector

Network

Attack Complexity

Low

Authentication

None

Confidentiality

Complete

Integrity

Complete

Availability

Complete

* Common Vulnerability Scoring System

SSVC

Decision:Attend

Exploitation

Poc

Automatable

Tech. Impact

Total

* Organization's Worst-case Scenario

Timeline

2023-04-27 CVE Reserved
2023-08-19 CVE Published
2024-10-07 CVE Updated
2024-10-07 First Exploit
2025-01-29 EPSS Updated
---------- Exploited in Wild
---------- KEV Due Date

CWE

CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CAPEC

CAPEC-549: Local Execution of Code
CAPEC-588: DOM-Based XSS

References (2)

URL	Tag	Source

URL	Date	SRC
https://starlabs.sg/advisories/23/23-2317	2024-10-07

URL	Date	SRC

URL	Date	SRC
https://support.typora.io/What's-New-1.6	2023-08-24

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"	< 1.6.7 Search vendor "Typora" for product "Typora" and version " < 1.6.7"	-	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"	< 1.6.7 Search vendor "Typora" for product "Typora" and version " < 1.6.7"	-	Affected	in	Microsoft Search vendor "Microsoft"	Windows Search vendor "Microsoft" for product "Windows"	-	-	Safe