CVE-2020-28200

EUVD-2020-20684
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
mitreCNA
4.3 MEDIUM
NETWORK
LOW
LOW
CVSS:3.1/AC:L/AV:N/A:L/C:N/I:N/PR:L/S:U/UI:N
Base Score
CVSS 3.x
EPSS Score
Percentile: 76%
Affected Products (NVD)
VendorProductVersion
dovecotdovecot
𝑥
< 2.3.15
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
dovecot
bookworm
1:2.3.19.1+dfsg1-2.1+deb12u1
fixed
bookworm (security)
1:2.3.19.1+dfsg1-2.1+deb12u1
fixed
bullseye
postponed
bullseye (security)
vulnerable
buster
ignored
sid
1:2.3.21.1+dfsg1-1
fixed
stretch
no-dsa
trixie
1:2.3.21.1+dfsg1-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
dovecot
bionic
ignored
focal
ignored
groovy
ignored
hirsute
ignored
impish
ignored
jammy
not-affected
kinetic
not-affected
lunar
not-affected
mantic
not-affected
noble
not-affected
trusty
ignored
xenial
ignored
Common Weakness Enumeration
References
https://dovecot.org/security
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/
https://www.openwall.com/lists/oss-security/2021/06/28/3
https://dovecot.org/security
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JB2VTJ3G2ILYWH5Y2FTY2PUHT2MD6VMI/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/TK424DWFO2TKJYXZ2H3XL633TYJL4GQN/
https://www.openwall.com/lists/oss-security/2021/06/28/3