Vulnerability CVE-2023-46116
Published: 2023-12-15

Description:
Tutanota (Tuta Mail) is an encrypted email provider. Tutanota allows users to open links in emails in external applications. Prior to version 3.118.12, it correctly blocks the `file:` URL scheme, which can be used by malicious actors to gain code execution on a victims computer, however fails to check other harmful schemes such as `ftp:`, `smb:`, etc. which can also be used. Successful exploitation of this vulnerability will enable an attacker to gain code execution on a victim's computer. Version 3.118.2 contains a patch for this issue.

Type:

CWE-20

 (Improper Input Validation)

 References:
https://github.com/tutao/tutanota/security/advisories/GHSA-mxgj-pq62-f644
https://github.com/tutao/tutanota/commit/88ecad17d00d05a722399aed35f0d280899d55a2
https://github.com/tutao/tutanota/blob/master/src/desktop/ApplicationWindow.ts#L417
https://github.com/tutao/tutanota/blob/master/src/desktop/ApplicationWindow.ts#L423
https://user-images.githubusercontent.com/46137338/270564886-7a0389d3-f9ef-44e1-9f5e-57ccc72dcaa8.mp4
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