UBUNTU-CVE-2021-33582

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Source
https://ubuntu.com/security/CVE-2021-33582
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2021/UBUNTU-CVE-2021-33582.json
JSON Data
https://api.test.osv.dev/v1/vulns/UBUNTU-CVE-2021-33582
Upstream
Downstream
Related
Published
2021-09-01T00:00:00Z
Modified
2025-09-08T16:47:12Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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

Affected packages

Ubuntu:Pro:16.04:LTS / cyrus-imapd-2.4

Package

Name
cyrus-imapd-2.4
Purl
pkg:deb/ubuntu/cyrus-imapd-2.4@2.4.18-3?arch=source&distro=esm-apps/xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected

Affected versions

2.*

2.4.17+caldav~beta10-18
2.4.17+nocaldav-2
2.4.18-3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-admin"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-admin-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-clients"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-clients-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-common"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-common-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-dev"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-dev-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-doc-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-imapd"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-imapd-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-murder"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-murder-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-nntpd"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-nntpd-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-pop3d"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-pop3d-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-replication"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "cyrus-replication-2.4"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "libcyrus-imap-perl"
        },
        {
            "binary_version": "2.4.18-3",
            "binary_name": "libcyrus-imap-perl24"
        }
    ]
}

Ubuntu:Pro:18.04:LTS / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd@2.5.10-3ubuntu1.1+esm1?arch=source&distro=esm-apps/bionic

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
2.5.10-3ubuntu1.1+esm1

Affected versions

2.*

2.5.10-3build1
2.5.10-3build2
2.5.10-3ubuntu1
2.5.10-3ubuntu1.1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-admin"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-caldav"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-clients"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-common"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-dev"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-imapd"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-murder"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-nntpd"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-pop3d"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "cyrus-replication"
        },
        {
            "binary_version": "2.5.10-3ubuntu1.1+esm1",
            "binary_name": "libcyrus-imap-perl"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}

Ubuntu:Pro:20.04:LTS / cyrus-imapd

Package

Name
cyrus-imapd
Purl
pkg:deb/ubuntu/cyrus-imapd@3.0.13-5ubuntu0.1~esm1?arch=source&distro=esm-apps/focal

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0Unknown introduced version / All previous versions are affected
Fixed
3.0.13-5ubuntu0.1~esm1

Affected versions

3.*

3.0.11-1
3.0.11-1build1
3.0.12-1
3.0.12-2
3.0.12-2ubuntu2
3.0.12-2ubuntu3
3.0.13-2ubuntu1
3.0.13-3ubuntu1
3.0.13-4ubuntu1
3.0.13-5

Ecosystem specific 

{
    "binaries": [
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-admin"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-caldav"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-clients"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-common"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-dev"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-imapd"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-murder"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-nntpd"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-pop3d"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "cyrus-replication"
        },
        {
            "binary_version": "3.0.13-5ubuntu0.1~esm1",
            "binary_name": "libcyrus-imap-perl"
        }
    ],
    "availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}