CVE-2022-40276 Path traversal in Zettlr
An attacker can read arbitrary local files by tricking a user into opening a malicious markdown file in Zettlr.
- 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-2022-40276?
CVE-2022-40276 is a medium-severity path traversal vulnerability in Zettlr, published on 3 Nov 2022. 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
Zettlr version 2.3.0 allows an external attacker to remotely obtain arbitrary local files on any client that attempts to view a malicious markdown file through Zettlr. This is possible because the application does not have a CSP policy (or at least not strict enough) and/or does not properly validate the contents of markdown files before rendering them.
Weakness: CWE-20
Which versions are affected by CVE-2022-40276?
It affects 1 product.
Products include Zettlr Zettlr.
How do I fix CVE-2022-40276?
No fix has been published for CVE-2022-40276 yet. Limit exposure of the affected software until one is available.
Upgrade, and resolve every user-supplied path against an allowed base folder before opening it. More about Path traversal.
Is CVE-2022-40276 being exploited?
There is no known exploitation of CVE-2022-40276 in the wild and no public exploit code.
Other vulnerabilities in Zettlr
Sources
Also known as GHSA-gq8w-3h98-m48x.