CVE-2023-46116 — Tutanota (Tuta Mail) is an encrypted email provider
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,
Published
2023-12-15T13:44:05.153Z
Last modified
2024-10-08T14:14:03.776Z
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:N
01What is this vulnerability?
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…
02Affected products
| Vendor | Product | Versions |
|---|
| tutao | tutanota | < 3.118.12 |
03Active exploitation status
Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.
04Recommended remediation
- Patch to a fixed version listed in the vendor advisory (see references below).
- Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
- Hunt historical logs for exploitation indicators — see Detection signatures below.
05Technical details
For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.
06Detection signatures
Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.
07Related CVEs
No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.
08Timeline
- Published: 2023-12-15T13:44:05.153Z
- Last modified: 2024-10-08T14:14:03.776Z
09References
- github.com — https://github.com/tutao/tutanota/security/advisories/GHSA-mxgj-pq62-f644
- github.com — https://github.com/tutao/tutanota/commit/88ecad17d00d05a722399aed35f0d280899d55a…
- github.com — https://github.com/tutao/tutanota/blob/master/src/desktop/ApplicationWindow.ts#L…
- github.com — https://github.com/tutao/tutanota/blob/master/src/desktop/ApplicationWindow.ts#L…
- user-images.githubusercontent.com — https://user-images.githubusercontent.com/46137338/270564886-7a0389d3-f9ef-44e1-…
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