High severity7.5NVD Advisory· Published Sep 1, 2021· Updated Jun 17, 2026
CVE-2021-33582
CVE-2021-33582
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
7cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
- cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*
- Cyrus/IMAPdescription
Patches
Vulnerability mechanics
References
7- cyrus.topicbox.com/groups/announce/T3dde0a2352462975-M1386fc44adf967e072f8df13/cyrus-imap-3-4-2-3-2-8-and-3-0-16-releasednvdPatchVendor Advisory
- github.com/cyrusimap/cyrus-imapd/commits/masternvdPatchThird Party Advisory
- www.cyrusimap.org/imap/download/release-notes/index.htmlnvdPatchRelease NotesVendor Advisory
- github.com/cyrusimap/cyrus-imapd/security/advisoriesnvdNot ApplicableThird Party Advisory
- lists.debian.org/debian-lts-announce/2022/06/msg00013.htmlnvdMailing ListThird Party Advisory
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6HEO3RURJW6NLIXS7NK5PVU6MGHC4SCM/nvd
- lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WJZB45QBUN7CZFGOWCZYUYACNBTX7LVS/nvd
News mentions
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