ubuntu-cve-2020-14364
Vulnerability from osv_ubuntu
Published
2020-08-24 12:00
Modified
2025-09-08 16:46
Summary
Details
An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice 'setup_len' exceeds its 'data_buf[4096]' in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.
Severity
5.0 (Medium)
N/A (UNKNOWN)
References
{
"affected": [
{
"ecosystem_specific": {
"availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
"binaries": [
{
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{
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},
{
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{
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},
{
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},
{
"binary_name": "qemu-system-aarch64",
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},
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{
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},
{
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},
{
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},
{
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},
{
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{
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},
{
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},
{
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}
]
},
"package": {
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},
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{
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{
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{
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}
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"1.7.0+dfsg-2ubuntu2",
"1.7.0+dfsg-2ubuntu3",
"1.7.0+dfsg-2ubuntu4",
"1.7.0+dfsg-2ubuntu5",
"1.7.0+dfsg-2ubuntu7",
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},
{
"ecosystem_specific": {
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{
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{
"binary_name": "qemu-guest-agent",
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},
{
"binary_name": "qemu-kvm",
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},
{
"binary_name": "qemu-system",
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},
{
"binary_name": "qemu-system-aarch64",
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},
{
"binary_name": "qemu-system-arm",
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},
{
"binary_name": "qemu-system-common",
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},
{
"binary_name": "qemu-system-mips",
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},
{
"binary_name": "qemu-system-misc",
"binary_version": "1:2.5+dfsg-5ubuntu10.46"
},
{
"binary_name": "qemu-system-ppc",
"binary_version": "1:2.5+dfsg-5ubuntu10.46"
},
{
"binary_name": "qemu-system-s390x",
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},
{
"binary_name": "qemu-system-sparc",
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},
{
"binary_name": "qemu-system-x86",
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},
{
"binary_name": "qemu-user",
"binary_version": "1:2.5+dfsg-5ubuntu10.46"
},
{
"binary_name": "qemu-user-binfmt",
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},
{
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},
{
"binary_name": "qemu-utils",
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}
]
},
"package": {
"ecosystem": "Ubuntu:16.04:LTS",
"name": "qemu",
"purl": "pkg:deb/ubuntu/qemu@1:2.5+dfsg-5ubuntu10.46?arch=source\u0026distro=xenial"
},
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{
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{
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{
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{
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{
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{
"binary_name": "qemu-system-misc",
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},
{
"binary_name": "qemu-system-ppc",
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{
"binary_name": "qemu-system-s390x",
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},
{
"binary_name": "qemu-system-sparc",
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},
{
"binary_name": "qemu-system-x86",
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},
{
"binary_name": "qemu-user",
"binary_version": "1:2.11+dfsg-1ubuntu7.32"
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{
"binary_name": "qemu-user-binfmt",
"binary_version": "1:2.11+dfsg-1ubuntu7.32"
},
{
"binary_name": "qemu-user-static",
"binary_version": "1:2.11+dfsg-1ubuntu7.32"
},
{
"binary_name": "qemu-utils",
"binary_version": "1:2.11+dfsg-1ubuntu7.32"
}
]
},
"package": {
"ecosystem": "Ubuntu:18.04:LTS",
"name": "qemu",
"purl": "pkg:deb/ubuntu/qemu@1:2.11+dfsg-1ubuntu7.32?arch=source\u0026distro=bionic"
},
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{
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],
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},
{
"ecosystem_specific": {
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"binaries": [
{
"binary_name": "qemu",
"binary_version": "1:4.2-3ubuntu6.6"
},
{
"binary_name": "qemu-block-extra",
"binary_version": "1:4.2-3ubuntu6.6"
},
{
"binary_name": "qemu-guest-agent",
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{
"binary_name": "qemu-kvm",
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{
"binary_name": "qemu-system",
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{
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{
"binary_name": "qemu-system-common",
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{
"binary_name": "qemu-system-data",
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},
{
"binary_name": "qemu-system-gui",
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},
{
"binary_name": "qemu-system-mips",
"binary_version": "1:4.2-3ubuntu6.6"
},
{
"binary_name": "qemu-system-misc",
"binary_version": "1:4.2-3ubuntu6.6"
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{
"binary_name": "qemu-system-ppc",
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{
"binary_name": "qemu-system-s390x",
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},
{
"binary_name": "qemu-system-sparc",
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},
{
"binary_name": "qemu-system-x86",
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},
{
"binary_name": "qemu-system-x86-microvm",
"binary_version": "1:4.2-3ubuntu6.6"
},
{
"binary_name": "qemu-system-x86-xen",
"binary_version": "1:4.2-3ubuntu6.6"
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{
"binary_name": "qemu-user",
"binary_version": "1:4.2-3ubuntu6.6"
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{
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},
{
"binary_name": "qemu-user-static",
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},
{
"binary_name": "qemu-utils",
"binary_version": "1:4.2-3ubuntu6.6"
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]
},
"package": {
"ecosystem": "Ubuntu:20.04:LTS",
"name": "qemu",
"purl": "pkg:deb/ubuntu/qemu@1:4.2-3ubuntu6.6?arch=source\u0026distro=focal"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "1:4.2-3ubuntu6.6"
}
],
"type": "ECOSYSTEM"
}
],
"versions": [
"1:4.0+dfsg-0ubuntu9",
"1:4.0+dfsg-0ubuntu10",
"1:4.2-1ubuntu1",
"1:4.2-1ubuntu2",
"1:4.2-3ubuntu1",
"1:4.2-3ubuntu2",
"1:4.2-3ubuntu3",
"1:4.2-3ubuntu4",
"1:4.2-3ubuntu5",
"1:4.2-3ubuntu6",
"1:4.2-3ubuntu6.1",
"1:4.2-3ubuntu6.2",
"1:4.2-3ubuntu6.3",
"1:4.2-3ubuntu6.4",
"1:4.2-3ubuntu6.5"
]
}
],
"aliases": [],
"details": "An out-of-bounds read/write access flaw was found in the USB emulator of the QEMU in versions before 5.2.0. This issue occurs while processing USB packets from a guest when USBDevice \u0027setup_len\u0027 exceeds its \u0027data_buf[4096]\u0027 in the do_token_in, do_token_out routines. This flaw allows a guest user to crash the QEMU process, resulting in a denial of service, or the potential execution of arbitrary code with the privileges of the QEMU process on the host.",
"id": "UBUNTU-CVE-2020-14364",
"modified": "2025-09-08T16:46:11Z",
"published": "2020-08-24T12:00:00Z",
"references": [
{
"type": "REPORT",
"url": "https://ubuntu.com/security/CVE-2020-14364"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2020/08/24/3"
},
{
"type": "REPORT",
"url": "https://www.openwall.com/lists/oss-security/2020/08/24/2"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4511-1"
},
{
"type": "ADVISORY",
"url": "https://ubuntu.com/security/notices/USN-4467-2"
},
{
"type": "REPORT",
"url": "https://www.cve.org/CVERecord?id=CVE-2020-14364"
}
],
"related": [
"USN-4511-1",
"USN-4467-2"
],
"schema_version": "1.7.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L",
"type": "CVSS_V3"
},
{
"score": "medium",
"type": "Ubuntu"
}
],
"upstream": [
"CVE-2020-14364"
]
}
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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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