CVE-2019-3814
Publication date 5 February 2019
Last updated 25 August 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| dovecot | ||
| 18.04 LTS bionic |
Fixed 1:2.2.33.2-1ubuntu4.2
|
|
| 16.04 LTS xenial |
Fixed 1:2.2.22-1ubuntu2.9
|
|
| 14.04 LTS trusty |
Fixed 1:2.2.9-1ubuntu2.5
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score |
6.8 · Medium
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | High |
| Availability impact | None |
| Vector | CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:N |
References
Related Ubuntu Security Notices (USN)
- USN-3881-1
- Dovecot vulnerability
- 5 February 2019
- USN-3881-2
- Dovecot vulnerability
- 5 February 2019