CVE-2021-33582 is a denial-of-service vulnerability affecting Cyrus IMAP versions prior to 3.4.2, 3.2.8, and 3.0.16, as well as various Debian and Fedora distributions. Attackers can remotely trigger a daemon hang lasting several minutes by sending specially crafted input that causes inefficient hash-table interactions. This vulnerability has a CVSS score of 7.5 (High), indicating a network-based attack with low complexity and high availability impact, but no confidentiality or integrity impact. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 3.0.16CPE matchmatch criteria | cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:* | ||
>= 3.2.0, < 3.2.8CPE matchmatch criteria | cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:* | ||
>= 3.4.0, < 3.4.2CPE matchmatch criteria | cpe:2.3:a:cyrus:imap:*:*:*:*:*:*:*:* | ||
34CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:* | ||
35CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.