USN-7224-1 (UBUNTU-CVE-2019-18928)
Vulnerability from osv_ubuntu – Published: 2025-01-22 20:39 – Updated: 2026-04-27 14:11 – Source website
VLAI
Summary
cyrus-imapd vulnerabilities
Details
It was discovered that non-authentication-related HTTP requests could be interpreted in an authentication context by a Cyrus IMAP Server when multiple requests arrived over the same connection. An unauthenticated attacker could possibly use this issue to perform a privilege escalation attack. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-18928)
Matthew Horsfall discovered that Cyrus IMAP Server utilized a poor string hashing algorithm that could be abused to control where data was being stored. An attacker could possibly use this issue to perform a denial of service. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS. (CVE-2021-33582)
Damian Poddebniak discovered that Cyrus IMAP Server could interpret specially crafted commands to exploit a memory issue. An authenticated attacker could possibly use this issue to perform a denial of service. This issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS. (CVE-2024-34055)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2019-18928",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-33582",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"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-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",
"binary_version": "2.5.10-3ubuntu1.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:18.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@2.5.10-3ubuntu1.1+esm1?arch=source\u0026distro=esm-apps/bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "2.5.10-3ubuntu1.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"2.5.10-3build1",
"2.5.10-3build2",
"2.5.10-3ubuntu1",
"2.5.10-3ubuntu1.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-33582",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"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-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",
"binary_version": "3.0.13-5ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:20.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@3.0.13-5ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.0.13-5ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"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"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2024-34055",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "cyrus-admin",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "cyrus-caldav",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "cyrus-clients",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "cyrus-common",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "cyrus-imapd",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "cyrus-murder",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "cyrus-nntpd",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "cyrus-pop3d",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "cyrus-replication",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
},
{
"binary_name": "libcyrus-imap-perl",
"binary_version": "3.4.3-3ubuntu0.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:22.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@3.4.3-3ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/jammy"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.4.3-3ubuntu0.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.2.6-2build1",
"3.4.2-2",
"3.4.2-2build1",
"3.4.3-2",
"3.4.3-3",
"3.4.3-3build2",
"3.4.3-3ubuntu0.1"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2024-34055",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:24.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "cyrus-admin",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "cyrus-caldav",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "cyrus-clients",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "cyrus-common",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "cyrus-imapd",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "cyrus-murder",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "cyrus-nntpd",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "cyrus-pop3d",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "cyrus-replication",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
},
{
"binary_name": "libcyrus-imap-perl",
"binary_version": "3.8.2-1ubuntu0.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:24.04:LTS",
"name": "cyrus-imapd",
"purl": "pkg:deb/ubuntu/cyrus-imapd@3.8.2-1ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/noble"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "3.8.2-1ubuntu0.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"3.8.0-5",
"3.8.1-1",
"3.8.1-1build1",
"3.8.1-1build2",
"3.8.1-3",
"3.8.1-3build3",
"3.8.2-1"
]
}
],
"aliases": [],
"details": "It was discovered that non-authentication-related HTTP requests could be\ninterpreted in an authentication context by a Cyrus IMAP Server when\nmultiple requests arrived over the same connection. An unauthenticated\nattacker could possibly use this issue to perform a privilege escalation\nattack. This issue only affected Ubuntu 18.04 LTS. (CVE-2019-18928)\n\nMatthew Horsfall discovered that Cyrus IMAP Server utilized a poor string\nhashing algorithm that could be abused to control where data was being\nstored. An attacker could possibly use this issue to perform a denial of\nservice. This issue only affected Ubuntu 18.04 LTS and Ubuntu 20.04 LTS.\n(CVE-2021-33582)\n\nDamian Poddebniak discovered that Cyrus IMAP Server could interpret\nspecially crafted commands to exploit a memory issue. An authenticated\nattacker could possibly use this issue to perform a denial of service.\nThis issue only affected Ubuntu 22.04 LTS and Ubuntu 24.04 LTS.\n(CVE-2024-34055)\n",
"id": "USN-7224-1",
"modified": "2026-04-27T14:11:39Z",
"published": "2025-01-22T20:39:43Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-7224-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2019-18928"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-33582"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2024-34055"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "cyrus-imapd vulnerabilities",
"upstream": [
"UBUNTU-CVE-2019-18928",
"UBUNTU-CVE-2021-33582",
"UBUNTU-CVE-2024-34055"
]
}
Loading…
Loading…
Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
Loading…
The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
Loading…
Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
Loading…