ubuntu-cve-2021-3700
Vulnerability from osv_ubuntu
Published
2022-02-24 19:15
Modified
2026-04-22 07:39
Summary
Details
A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.
Severity
6.4 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libusbredirhost1",
"binary_version": "0.6-2ubuntu1.1+esm1"
},
{
"binary_name": "libusbredirparser1",
"binary_version": "0.6-2ubuntu1.1+esm1"
},
{
"binary_name": "usbredirserver",
"binary_version": "0.6-2ubuntu1.1+esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:14.04:LTS",
"name": "usbredir",
"purl": "pkg:deb/ubuntu/usbredir@0.6-2ubuntu1.1+esm1?arch=source\u0026distro=trusty/esm"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.6-2ubuntu1.1+esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.6-2",
"0.6-2ubuntu1",
"0.6-2ubuntu1.1"
]
},
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
"binary_name": "libusbredirhost1",
"binary_version": "0.7.1-1ubuntu0.16.04.1~esm1"
},
{
"binary_name": "libusbredirparser1",
"binary_version": "0.7.1-1ubuntu0.16.04.1~esm1"
},
{
"binary_name": "usbredirserver",
"binary_version": "0.7.1-1ubuntu0.16.04.1~esm1"
}
]
},
"package": {
"ecosystem": "Ubuntu:Pro:16.04:LTS",
"name": "usbredir",
"purl": "pkg:deb/ubuntu/usbredir@0.7.1-1ubuntu0.16.04.1~esm1?arch=source\u0026distro=esm-infra/xenial"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.7.1-1ubuntu0.16.04.1~esm1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.7-1ubuntu2",
"0.7.1-1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libusbredirhost1",
"binary_version": "0.7.1-1ubuntu0.18.04.1"
},
{
"binary_name": "libusbredirparser1",
"binary_version": "0.7.1-1ubuntu0.18.04.1"
},
{
"binary_name": "usbredirserver",
"binary_version": "0.7.1-1ubuntu0.18.04.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "usbredir",
"purl": "pkg:deb/ubuntu/usbredir@0.7.1-1ubuntu0.18.04.1?arch=source\u0026distro=bionic"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.7.1-1ubuntu0.18.04.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.7.1-1"
]
},
{
"ecosystem_specific": {
"availability": "No subscription required",
"binaries": [
{
"binary_name": "libusbredirhost1",
"binary_version": "0.8.0-1ubuntu0.1"
},
{
"binary_name": "libusbredirparser1",
"binary_version": "0.8.0-1ubuntu0.1"
},
{
"binary_name": "usbredirserver",
"binary_version": "0.8.0-1ubuntu0.1"
}
]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "usbredir",
"purl": "pkg:deb/ubuntu/usbredir@0.8.0-1ubuntu0.1?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.8.0-1ubuntu0.1"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"0.8.0-1"
]
}
],
"aliases": [],
"details": "A use-after-free vulnerability was found in usbredir in versions prior to 0.11.0 in the usbredirparser_serialize() in usbredirparser/usbredirparser.c. This issue occurs when serializing large amounts of buffered write data in the case of a slow or blocked destination.",
"id": "UBUNTU-CVE-2021-3700",
"modified": "2026-04-22T07:39:48Z",
"published": "2022-02-24T19:15:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2021-3700"
},
{
"type": "REPORT",
"url": "https://access.redhat.com/security/cve/CVE-2021-3700"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-5784-1"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2021-3700"
}
],
"related": [
"USN-5784-1"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H",
"type": "CVSS_V3"
},
{
"score": "low",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2021-3700"
]
}
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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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