CVE-2023-46116
Tutanota allows users to open links in emails in external applications.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (1.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.1
- 8.8 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
- EPSS
- 1.26% probability · 68th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-20
- Affected
- tuta/tutanota
- Source
- security-advisories@github.com
References
- https://github.com/tutao/tutanota/blob/master/src/desktop/ApplicationWindow.ts#L417Product
- https://github.com/tutao/tutanota/blob/master/src/desktop/ApplicationWindow.ts#L423Product
- https://github.com/tutao/tutanota/commit/88ecad17d00d05a722399aed35f0d280899d55a2Patch
- https://github.com/tutao/tutanota/security/advisories/GHSA-mxgj-pq62-f644Exploit, Vendor Advisory
- https://user-images.githubusercontent.com/46137338/270564886-7a0389d3-f9ef-44e1-9f5e-57ccc72dcaa8.mp4Exploit
- https://github.com/tutao/tutanota/blob/master/src/desktop/ApplicationWindow.ts#L417Product
- https://github.com/tutao/tutanota/blob/master/src/desktop/ApplicationWindow.ts#L423Product
- https://github.com/tutao/tutanota/commit/88ecad17d00d05a722399aed35f0d280899d55a2Patch
- https://github.com/tutao/tutanota/security/advisories/GHSA-mxgj-pq62-f644Exploit, Vendor Advisory
- https://user-images.githubusercontent.com/46137338/270564886-7a0389d3-f9ef-44e1-9f5e-57ccc72dcaa8.mp4Exploit
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.