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.
References (7)
Scores
CVSS v3
7.5
EPSS
0.0102
EPSS Percentile
77.3%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Details
CWE
CWE-407
Status
published
Products (4)
cyrus/imap
< 3.0.16
debian/debian_linux
9.0
fedoraproject/fedora
34
fedoraproject/fedora
35
Published
Sep 01, 2021
Tracked Since
Feb 18, 2026