| Name | 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. |
| Source | CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more) |
| References | DLA-3052-1 |
| Debian Bugs | 993433 |
The table below lists information on source packages.
| Source Package | Release | Version | Status |
|---|---|---|---|
| cyrus-imapd (PTS) | stretch (security), stretch (lts), stretch | 2.5.10-3+deb9u3 | fixed |
| buster, buster (lts) | 3.0.8-6+deb10u7 | fixed | |
| buster (security) | 3.0.8-6+deb10u3 | vulnerable | |
| bullseye | 3.2.6-2+deb11u2 | fixed | |
| bullseye (security) | 3.2.6-2+deb11u4 | fixed | |
| bookworm | 3.6.1-4+deb12u3 | fixed | |
| bookworm (security) | 3.6.1-4+deb12u2 | fixed | |
| sid | 3.10.0-1 | fixed | |
| cyrus-imapd-2.4 (PTS) | jessie | 2.4.17+nocaldav-0+deb8u2 | vulnerable |
The information below is based on the following data on fixed versions.
| Package | Type | Release | Fixed Version | Urgency | Origin | Debian Bugs |
|---|---|---|---|---|---|---|
| cyrus-imapd | source | stretch | 2.5.10-3+deb9u3 | DLA-3052-1 | ||
| cyrus-imapd | source | buster | 3.0.8-6+deb10u6 | |||
| cyrus-imapd | source | bullseye | 3.2.6-2+deb11u1 | |||
| cyrus-imapd | source | (unstable) | 3.4.2-1 | 993433 | ||
| cyrus-imapd-2.4 | source | jessie | (unfixed) | end-of-life | ||
| cyrus-imapd-2.4 | source | (unstable) | (unfixed) |
https://cyrus.topicbox.com/groups/announce/T3dde0a2352462975-M1386fc44adf967e072f8df13/cyrus-imap-3-4-2-3-2-8-and-3-0-16-released
https://github.com/cyrusimap/cyrus-imapd/commit/0fb658f1727f4446f7f33adcc428ba4c9eeabe3e (master)
https://github.com/cyrusimap/cyrus-imapd/commit/f63695609c88a3f76129499bb49fb82e8155fb32 (master)
https://github.com/cyrusimap/cyrus-imapd/commit/833c22bd7de5bbb591c2cb3705c9983b6d2b1fee (master)