CVE-2023-2317 Typora DOM-Based Cross-site Scripting leading to Remote Code Execution
A DOM-based XSS in Typora allows attackers to execute arbitrary code via malicious markdown files or pasted content.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Local or same network only
- Victim action needed
- A user has to click or open something
- Fix
- None listed
What is CVE-2023-2317?
CVE-2023-2317 is a high-severity cross-site scripting vulnerability in Typora, published on 19 Aug 2023. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Official description
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.
Weakness: CWE-79
Which versions are affected by CVE-2023-2317?
It affects 1 product.
Products include Typora Typora.
How do I fix CVE-2023-2317?
No fix has been published for CVE-2023-2317 yet. Limit exposure of the affected software until one is available.
Escape output for the context it lands in and set a strict Content Security Policy. Upgrading the affected component is the real fix. More about Cross-site scripting.
Is CVE-2023-2317 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2023-2317 exists.
Other vulnerabilities in Typora
Sources
Also known as GHSA-vwv2-9jpv-577p.