CVE-2019-10691
Published: 18 April 2019
The JSON encoder in Dovecot before 2.3.5.2 allows attackers to repeatedly crash the authentication service by attempting to authenticate with an invalid UTF-8 sequence as the username.
Notes
| Author | Note |
|---|---|
| mdeslaur | 2.3 only |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
dovecot Launchpad, Ubuntu, Debian |
bionic |
Not vulnerable
(1:2.2.33.2-1ubuntu4.3)
|
| cosmic |
Released
(1:2.3.2.1-1ubuntu3.3)
|
|
| disco |
Released
(1:2.3.4.1-1ubuntu2.1)
|
|
| trusty |
Not vulnerable
(1:2.2.9-1ubuntu2.6)
|
|
| upstream |
Released
(2.3.5.2)
|
|
| xenial |
Not vulnerable
(1:2.2.22-1ubuntu2.10)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.5 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | High |
| Vector | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |