CVE-2020-28200
Published: 21 June 2021
The Sieve engine in Dovecot before 2.3.15 allows Uncontrolled Resource Consumption, as demonstrated by a situation with a complex regular expression for the regex extension.
Notes
| Author | Note |
|---|---|
| mdeslaur | per upstream, fixing this is a massive change that cannot be backported to earlier releases |
Priority
Status
| Package | Release | Status |
|---|---|---|
|
dovecot Launchpad, Ubuntu, Debian |
trusty |
Needs triage
|
| xenial |
Needs triage
|
|
| groovy |
Ignored
(end of life)
|
|
| hirsute |
Ignored
(end of life)
|
|
| upstream |
Released
(2.3.15)
|
|
| jammy |
Not vulnerable
(1:2.3.16+dfsg1-3ubuntu2)
|
|
| impish |
Ignored
(end of life)
|
|
| bionic |
Needed
|
|
| focal |
Needed
|
|
| kinetic |
Not vulnerable
(1:2.3.16+dfsg1-3ubuntu3)
|
|
| lunar |
Not vulnerable
(1:2.3.16+dfsg1-3ubuntu3)
|
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 4.3 |
| Attack vector | Network |
| Attack complexity | Low |
| Privileges required | Low |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | None |
| Integrity impact | None |
| Availability impact | Low |
| Vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |