USN-6042-1 (UBUNTU-CVE-2023-1786)
Vulnerability from osv_ubuntu – Published: 2023-04-26 17:59 – Updated: 2026-06-25 10:46 – Source website
VLAI
Summary
cloud-init vulnerability
Details
James Golovich discovered that sensitive data could be exposed in logs. An attacker could use this information to find hashed passwords and possibly escalate their privilege.
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2023-1786",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:Pro:16.04:LTS"
}
},
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "cloud-init",
"binary_version": "21.1-19-gbad84ad4-0ubuntu1~16.04.4"
},
{
"binary_name": "ec2-init",
"binary_version": "21.1-19-gbad84ad4-0ubuntu1~16.04.4"
},
{
"binary_name": "grub-legacy-ec2",
"binary_version": "21.1-19-gbad84ad4-0ubuntu1~16.04.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "cloud-init",
"purl": "pkg:deb/ubuntu/cloud-init@21.1-19-gbad84ad4-0ubuntu1~16.04.4?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "21.1-19-gbad84ad4-0ubuntu1~16.04.4"
}
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"type": "ECOSYSTEM"
}
],
"versions": [
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"0.7.8-49-g9e904bb-0ubuntu1~16.04.3",
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"0.7.9-0ubuntu1~16.04.2",
"0.7.9-48-g1c795b9-0ubuntu1~16.04.1",
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"18.4-0ubuntu1~16.04.2",
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"19.2-36-g059d049c-0ubuntu1~16.04.1",
"19.2-36-g059d049c-0ubuntu2~16.04.1",
"19.3-41-gc4735dd3-0ubuntu1~16.04.1",
"19.4-33-gbb4131a2-0ubuntu1~16.04.1",
"20.2-45-g5f7825e2-0ubuntu1~16.04.1",
"20.3-2-g371b392c-0ubuntu1~16.04.1",
"20.4-0ubuntu1~16.04.1",
"20.4-0ubuntu1~16.04.2",
"20.4.1-0ubuntu1~16.04.1",
"21.1-19-gbad84ad4-0ubuntu1~16.04.1",
"21.1-19-gbad84ad4-0ubuntu1~16.04.2"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2023-1786",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "cloud-init",
"binary_version": "23.1.2-0ubuntu0~18.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "cloud-init",
"purl": "pkg:deb/ubuntu/cloud-init@23.1.2-0ubuntu0~18.04.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "23.1.2-0ubuntu0~18.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"17.1-18-gd4f70470-0ubuntu1",
"17.1-25-g17a15f9e-0ubuntu1~17.10.1",
"17.1-25-g17a15f9e-0ubuntu1",
"17.1-27-geb292c18-0ubuntu1",
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"18.1-5-g40e77380-0ubuntu1",
"18.1-17-g97012fbb-0ubuntu1",
"18.1-23-gde34dc7c-0ubuntu1",
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"20.4-0ubuntu1~18.04.1",
"20.4-0ubuntu1~18.04.2",
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"21.1-19-gbad84ad4-0ubuntu1~18.04.2",
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]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2023-1786",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "cloud-init",
"binary_version": "23.1.2-0ubuntu0~20.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "cloud-init",
"purl": "pkg:deb/ubuntu/cloud-init@23.1.2-0ubuntu0~20.04.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "23.1.2-0ubuntu0~20.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
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]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2023-1786",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:22.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "cloud-init",
"binary_version": "23.1.2-0ubuntu0~22.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:22.04:LTS",
"name": "cloud-init",
"purl": "pkg:deb/ubuntu/cloud-init@23.1.2-0ubuntu0~22.04.1?arch=source\u0026distro=jammy"
},
"ranges": [
{
"events": [
{
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},
{
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}
],
"type": "ECOSYSTEM"
}
],
"versions": [
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"21.4-0ubuntu1~22.04.1",
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"22.2-0ubuntu1~22.04.1",
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"23.1.1-0ubuntu0~22.04.1"
]
}
],
"aliases": [],
"details": "James Golovich discovered that sensitive data could be exposed in logs. An\nattacker could use this information to find hashed passwords and possibly\nescalate their privilege.\n",
"id": "USN-6042-1",
"modified": "2026-06-25T10:46:12Z",
"published": "2023-04-26T17:59:50Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-6042-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2023-1786"
},
{
"type": "REPORT",
"url": "https://bugs.launchpad.net/cloud-init/+bug/2013967"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "cloud-init vulnerability",
"upstream": [
"UBUNTU-CVE-2023-1786"
]
}
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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.
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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.
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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.
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