usn-5155-1
Vulnerability from osv_ubuntu
Published
2021-11-23 19:04
Modified
2026-04-27 14:11
Summary
bluez vulnerabilities
Details
It was discovered that BlueZ incorrectly handled the Discoverable status when a device is powered down. This could result in devices being powered up discoverable, contrary to expectations. This issue only affected Ubuntu 20.04 LTS, Ubuntu 21.04, and Ubuntu 21.10. (CVE-2021-3658)
It was discovered that BlueZ incorrectly handled certain memory operations. A remote attacker could possibly use this issue to cause BlueZ to consume resources, leading to a denial of service. (CVE-2021-41229)
It was discovered that the BlueZ gatt server incorrectly handled disconnects. A remote attacker could possibly use this issue to cause BlueZ to crash, leading to a denial of service. (CVE-2021-43400)
References
{
"affected": [
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-41229",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-43400",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:18.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "bluetooth",
"binary_version": "5.48-0ubuntu3.6"
},
{
"binary_name": "bluez",
"binary_version": "5.48-0ubuntu3.6"
},
{
"binary_name": "bluez-cups",
"binary_version": "5.48-0ubuntu3.6"
},
{
"binary_name": "bluez-hcidump",
"binary_version": "5.48-0ubuntu3.6"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.48-0ubuntu3.6"
},
{
"binary_name": "bluez-tests",
"binary_version": "5.48-0ubuntu3.6"
},
{
"binary_name": "libbluetooth3",
"binary_version": "5.48-0ubuntu3.6"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "bluez",
"purl": "pkg:deb/ubuntu/bluez@5.48-0ubuntu3.6?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.48-0ubuntu3.6"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.46-0ubuntu3",
"5.46-0ubuntu4",
"5.48-0ubuntu3",
"5.48-0ubuntu3.1",
"5.48-0ubuntu3.2",
"5.48-0ubuntu3.3",
"5.48-0ubuntu3.4",
"5.48-0ubuntu3.5"
]
},
{
"database_specific": {
"cves_map": {
"cves": [
{
"id": "CVE-2021-3658",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-41229",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L",
"type": "CVSS_V3"
},
{
"score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
]
},
{
"id": "CVE-2021-43400",
"severity": [
{
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
]
}
],
"ecosystem": "Ubuntu:20.04:LTS"
}
},
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "bluetooth",
"binary_version": "5.53-0ubuntu3.4"
},
{
"binary_name": "bluez",
"binary_version": "5.53-0ubuntu3.4"
},
{
"binary_name": "bluez-cups",
"binary_version": "5.53-0ubuntu3.4"
},
{
"binary_name": "bluez-hcidump",
"binary_version": "5.53-0ubuntu3.4"
},
{
"binary_name": "bluez-obexd",
"binary_version": "5.53-0ubuntu3.4"
},
{
"binary_name": "bluez-tests",
"binary_version": "5.53-0ubuntu3.4"
},
{
"binary_name": "libbluetooth3",
"binary_version": "5.53-0ubuntu3.4"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "bluez",
"purl": "pkg:deb/ubuntu/bluez@5.53-0ubuntu3.4?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "5.53-0ubuntu3.4"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"5.50-0ubuntu4",
"5.51-0ubuntu1",
"5.51-0ubuntu2",
"5.52-0ubuntu1",
"5.52-0ubuntu2",
"5.53-0ubuntu1",
"5.53-0ubuntu2",
"5.53-0ubuntu3",
"5.53-0ubuntu3.1",
"5.53-0ubuntu3.2",
"5.53-0ubuntu3.3"
]
}
],
"aliases": [],
"details": "It was discovered that BlueZ incorrectly handled the Discoverable status\nwhen a device is powered down. This could result in devices being powered\nup discoverable, contrary to expectations. This issue only affected Ubuntu\n20.04 LTS, Ubuntu 21.04, and Ubuntu 21.10. (CVE-2021-3658)\n\nIt was discovered that BlueZ incorrectly handled certain memory operations.\nA remote attacker could possibly use this issue to cause BlueZ to consume\nresources, leading to a denial of service. (CVE-2021-41229)\n\nIt was discovered that the BlueZ gatt server incorrectly handled\ndisconnects. A remote attacker could possibly use this issue to cause\nBlueZ to crash, leading to a denial of service. (CVE-2021-43400)\n",
"id": "USN-5155-1",
"modified": "2026-04-27T14:11:27Z",
"published": "2021-11-23T19:04:05Z",
"references": [
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5155-1"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3658"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-41229"
},
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-43400"
}
],
"related": [],
"schema_version": "1.7.0",
"summary": "bluez vulnerabilities",
"upstream": [
"UBUNTU-CVE-2021-3658",
"UBUNTU-CVE-2021-41229",
"UBUNTU-CVE-2021-43400"
]
}
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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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