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 |