CVE-2021-33582 : Cyrus IMAP before 3.4.2 allows remote attackers to cause a denial of service (mu

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.

Published 2021-09-01 06:15:06

Updated 2023-01-20 02:09:37

Source MITRE

View at NVD, CVE.org

Vulnerability category: Denial of service

Products affected by CVE-2021-33582

Debian » Debian Linux » Version: 9.0
cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*
Matching versions
Cyrus » Imap
Versions before (<) 3.0.16
cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*
Matching versions
Cyrus » Imap
Versions from including (>=) 3.4.0 and before (<) 3.4.2
cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*
Matching versions
Cyrus » Imap
Versions from including (>=) 3.2.0 and before (<) 3.2.8
cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 34
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
Matching versions
Fedoraproject » Fedora » Version: 35
cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
Matching versions

Exploit prediction scoring system (EPSS) score for CVE-2021-33582

EPSS FAQ

0.77%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 81 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-33582

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
5.0	MEDIUM	AV:N/AC:L/Au:N/C:N/I:N/A:P	10.0	2.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: None Integrity Impact: None Availability Impact: Partial
7.5	HIGH	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	3.9	3.6	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: None Integrity: None Availability: High

CWE ids for CVE-2021-33582

CWE-327 Use of a Broken or Risky Cryptographic Algorithm

The product uses a broken or risky cryptographic algorithm or protocol.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-33582

https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/WJZB45QBUN7CZFGOWCZYUYACNBTX7LVS/

[SECURITY] Fedora 35 Update: cyrus-imapd-3.2.8-2.fc35 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6HEO3RURJW6NLIXS7NK5PVU6MGHC4SCM/

[SECURITY] Fedora 34 Update: cyrus-imapd-3.2.8-2.fc34 - package-announce - Fedora Mailing-Lists
Mailing List;Third Party Advisory

CVEs referencing this url
https://github.com/cyrusimap/cyrus-imapd/security/advisories

Security Advisories · cyrusimap/cyrus-imapd · GitHub
Not Applicable;Third Party Advisory
https://github.com/cyrusimap/cyrus-imapd/commits/master

Commits · cyrusimap/cyrus-imapd · GitHub
Patch;Third Party Advisory
https://www.cyrusimap.org/imap/download/release-notes/index.html

Release Notes — Cyrus IMAP 3.4.2 documentation
Patch;Release Notes;Vendor Advisory
https://cyrus.topicbox.com/groups/announce/T3dde0a2352462975-M1386fc44adf967e072f8df13/cyrus-imap-3-4-2-3-2-8-and-3-0-16-released

Cyrus IMAP 3.4.2, 3.2.8, and 3.0.16 released | Topicbox
Patch;Vendor Advisory
https://lists.debian.org/debian-lts-announce/2022/06/msg00013.html

[SECURITY] [DLA 3052-1] cyrus-imapd security update
Mailing List;Third Party Advisory

CVEs referencing this url

Jump to

Vulnerability Details : CVE-2021-33582

Products affected by CVE-2021-33582

Exploit prediction scoring system (EPSS) score for CVE-2021-33582

CVSS scores for CVE-2021-33582

CWE ids for CVE-2021-33582

References for CVE-2021-33582