vulnerability
Red Hat: CVE-2021-33582: CVE-2021-33582 cyrus-imapd: Denial of service via string hashing algorithm collisions (Multiple Advisories)
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 5 | (AV:N/AC:L/Au:N/C:N/I:N/A:P) | Sep 1, 2021 | Sep 14, 2021 | Aug 11, 2025 |
Severity
5
CVSS
(AV:N/AC:L/Au:N/C:N/I:N/A:P)
Published
Sep 1, 2021
Added
Sep 14, 2021
Modified
Aug 11, 2025
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.
Solutions
no-fix-redhat-rpm-packageredhat-upgrade-cyrus-imapdredhat-upgrade-cyrus-imapd-debuginforedhat-upgrade-cyrus-imapd-debugsourceredhat-upgrade-cyrus-imapd-utilsredhat-upgrade-cyrus-imapd-utils-debuginforedhat-upgrade-cyrus-imapd-vzicredhat-upgrade-cyrus-imapd-vzic-debuginfo
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