CVE-2021-33582

Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (multiple-minute daemon hang) via input that is mishandled during hash-table interaction. Because there are many insertions into a single bucket, strcmp becomes slow. This is fixed in 3.4.2, 3.2.8, and 3.0.16.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 86.71%
Affected Products (NVD)
VendorProductVersion
cyrusimap
𝑥
< 3.0.16
cyrusimap
3.2.0 ≤
𝑥
< 3.2.8
cyrusimap
3.4.0 ≤
𝑥
< 3.4.2
debiandebian_linux
9.0
𝑥
= Vulnerable software versions
Debian logo
Debian Releases
Debian Product
Codename
cyrus-imapd
bookworm
3.6.1-4+deb12u3
fixed
bookworm (security)
3.6.1-4+deb12u2
fixed
bullseye
3.2.6-2+deb11u2
fixed
sid
3.10.0-1
fixed
Ubuntu logo
Ubuntu Releases
Ubuntu Product
Codename
cyrus-imapd
bionic
Fixed 2.5.10-3ubuntu1.1+esm1
released
focal
Fixed 3.0.13-5ubuntu0.1~esm1
released
jammy
not-affected
mantic
not-affected
noble
not-affected
oracular
not-affected
plucky
not-affected
questing
not-affected
resolute
not-affected
trusty
dne
xenial
ignored
cyrus-imapd-2.4
bionic
dne
focal
dne
jammy
dne
mantic
dne
noble
dne
oracular
dne
plucky
dne
questing
dne
resolute
dne
trusty
dne
xenial
ignored
Red Hat logo
Red Hat Enterprise Linux Releases
Red Hat Product
Release
cyrus-imapd
RHEL 8
0:3.0.7-20.el8_4.1
fixed
RHEL 8.1 E4S
0:3.0.7-16.el8_1.1
fixed
RHEL 8.1 EUS
0:3.0.7-16.el8_1.1
fixed
RHEL 8.2 AUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 E4S
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 EUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 TUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.4 AUS
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 E4S
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 EUS
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 TUS
0:3.0.7-20.el8_4.1
fixed
cyrus-imapd-utils
RHEL 8
0:3.0.7-20.el8_4.1
fixed
RHEL 8.1 E4S
0:3.0.7-16.el8_1.1
fixed
RHEL 8.1 EUS
0:3.0.7-16.el8_1.1
fixed
RHEL 8.2 AUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 E4S
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 EUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 TUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.4 AUS
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 E4S
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 EUS
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 TUS
0:3.0.7-20.el8_4.1
fixed
cyrus-imapd-vzic
RHEL 8
0:3.0.7-20.el8_4.1
fixed
RHEL 8.1 E4S
0:3.0.7-16.el8_1.1
fixed
RHEL 8.1 EUS
0:3.0.7-16.el8_1.1
fixed
RHEL 8.2 AUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 E4S
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 EUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.2 TUS
0:3.0.7-16.el8_2.1
fixed
RHEL 8.4 AUS
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 E4S
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 EUS
0:3.0.7-20.el8_4.1
fixed
RHEL 8.4 TUS
0:3.0.7-20.el8_4.1
fixed
Amazon Linux logo
Amazon Linux Releases
Amazon Package
Release
cyrus-imapd
Amazon Linux 1
0:2.4.22-1.10.amzn1
fixed
Amazon Linux 2
0:2.4.22-1.amzn2.0.1
fixed
cyrus-imapd-debuginfo
Amazon Linux 1
0:2.4.22-1.10.amzn1
fixed
Amazon Linux 2
0:2.4.22-1.amzn2.0.1
fixed
cyrus-imapd-devel
Amazon Linux 1
0:2.4.22-1.10.amzn1
fixed
Amazon Linux 2
0:2.4.22-1.amzn2.0.1
fixed
cyrus-imapd-utils
Amazon Linux 1
0:2.4.22-1.10.amzn1
fixed
Amazon Linux 2
0:2.4.22-1.amzn2.0.1
fixed
Common Weakness Enumeration
References
https://cyrus.topicbox.com/groups/announce/T3dde0a2352462975-M1386fc44adf967e072f8df13/cyrus-imap-3-4-2-3-2-8-and-3-0-16-released
https://github.com/cyrusimap/cyrus-imapd/commits/master
https://github.com/cyrusimap/cyrus-imapd/security/advisories
https://lists.debian.org/debian-lts-announce/2022/06/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HEO3RURJW6NLIXS7NK5PVU6MGHC4SCM/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJZB45QBUN7CZFGOWCZYUYACNBTX7LVS/
https://www.cyrusimap.org/imap/download/release-notes/index.html
https://cyrus.topicbox.com/groups/announce/T3dde0a2352462975-M1386fc44adf967e072f8df13/cyrus-imap-3-4-2-3-2-8-and-3-0-16-released
https://github.com/cyrusimap/cyrus-imapd/commits/master
https://github.com/cyrusimap/cyrus-imapd/security/advisories
https://lists.debian.org/debian-lts-announce/2022/06/msg00013.html
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HEO3RURJW6NLIXS7NK5PVU6MGHC4SCM/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJZB45QBUN7CZFGOWCZYUYACNBTX7LVS/
https://www.cyrusimap.org/imap/download/release-notes/index.html