Improper input validation in Tuta Tutanota

CVE-2023-46116

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

EPSS: 0.013 (66.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.3 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N.

Affected products

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2023-46116?
CVE-2023-46116 is a critical-severity vulnerability in Tuta Tutanota, classified under Improper Input Validation. CVSS score: 9.3/10. Published 2023-12-15.
How severe is CVE-2023-46116?
Critical severity. CVSS v3 base score is 9.3 out of 10.