CVE-2021-33582
7.5
HIGH
CVSS 3.1
EPSS 1.0%
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.
How to fix CVE-2021-33582
To remediate CVE-2021-33582, upgrade the affected package to a fixed version below.
- Debian/cyrus-imapd—upgrade to 3.2.6-2+deb11u1 or later
Is CVE-2021-33582 being exploited?
Low — EPSS is 1.0%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 3.2.6-2+deb11u1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |