msrc_cve-2020-14364
Vulnerability from csaf_microsoft
Published
2020-08-02 00:00
Modified
2020-09-04 00:00
Summary
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.
Notes
Additional Resources
To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle
Disclaimer
The information provided in the Microsoft Knowledge Base is provided \"as is\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.
{
"document": {
"category": "csaf_vex",
"csaf_version": "2.0",
"distribution": {
"text": "Public",
"tlp": {
"label": "WHITE",
"url": "https://www.first.org/tlp/"
}
},
"lang": "en-US",
"notes": [
{
"category": "general",
"text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
"title": "Additional Resources"
},
{
"category": "legal_disclaimer",
"text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
"title": "Disclaimer"
}
],
"publisher": {
"category": "vendor",
"contact_details": "secure@microsoft.com",
"name": "Microsoft Security Response Center",
"namespace": "https://msrc.microsoft.com"
},
"references": [
{
"category": "self",
"summary": "CVE-2020-14364 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. - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-14364.json"
},
{
"category": "external",
"summary": "Microsoft Support Lifecycle",
"url": "https://support.microsoft.com/lifecycle"
},
{
"category": "external",
"summary": "Common Vulnerability Scoring System",
"url": "https://www.first.org/cvss"
}
],
"title": "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.",
"tracking": {
"current_release_date": "2020-09-04T00:00:00.000Z",
"generator": {
"date": "2025-10-19T18:03:13.165Z",
"engine": {
"name": "MSRC Generator",
"version": "1.0"
}
},
"id": "msrc_CVE-2020-14364",
"initial_release_date": "2020-08-02T00:00:00.000Z",
"revision_history": [
{
"date": "2020-09-04T00:00:00.000Z",
"legacy_version": "1",
"number": "1",
"summary": "Information published."
}
],
"status": "final",
"version": "1"
}
},
"product_tree": {
"branches": [
{
"branches": [
{
"branches": [
{
"category": "product_version",
"name": "1.0",
"product": {
"name": "CBL Mariner 1.0",
"product_id": "16820"
}
}
],
"category": "product_name",
"name": "Azure Linux"
},
{
"branches": [
{
"category": "product_version_range",
"name": "\u003ccm1 qemu-kvm 4.2.0-21",
"product": {
"name": "\u003ccm1 qemu-kvm 4.2.0-21",
"product_id": "1"
}
},
{
"category": "product_version",
"name": "cm1 qemu-kvm 4.2.0-21",
"product": {
"name": "cm1 qemu-kvm 4.2.0-21",
"product_id": "16955"
}
}
],
"category": "product_name",
"name": "qemu-kvm"
}
],
"category": "vendor",
"name": "Microsoft"
}
],
"relationships": [
{
"category": "default_component_of",
"full_product_name": {
"name": "\u003ccm1 qemu-kvm 4.2.0-21 as a component of CBL Mariner 1.0",
"product_id": "16820-1"
},
"product_reference": "1",
"relates_to_product_reference": "16820"
},
{
"category": "default_component_of",
"full_product_name": {
"name": "cm1 qemu-kvm 4.2.0-21 as a component of CBL Mariner 1.0",
"product_id": "16955-16820"
},
"product_reference": "16955",
"relates_to_product_reference": "16820"
}
]
},
"vulnerabilities": [
{
"cve": "CVE-2020-14364",
"cwe": {
"id": "CWE-125",
"name": "Out-of-bounds Read"
},
"notes": [
{
"category": "general",
"text": "redhat",
"title": "Assigning CNA"
}
],
"product_status": {
"fixed": [
"16955-16820"
],
"known_affected": [
"16820-1"
]
},
"references": [
{
"category": "self",
"summary": "CVE-2020-14364 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. - VEX",
"url": "https://msrc.microsoft.com/csaf/vex/2020/msrc_cve-2020-14364.json"
}
],
"remediations": [
{
"category": "vendor_fix",
"date": "2020-09-04T00:00:00.000Z",
"details": "4.2.0-21:Security Update:https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade",
"product_ids": [
"16820-1"
],
"url": "https://learn.microsoft.com/en-us/azure/azure-linux/tutorial-azure-linux-upgrade"
}
],
"scores": [
{
"cvss_v3": {
"attackComplexity": "HIGH",
"attackVector": "LOCAL",
"availabilityImpact": "LOW",
"baseScore": 5.0,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"environmentalsScore": 0.0,
"integrityImpact": "LOW",
"privilegesRequired": "HIGH",
"scope": "CHANGED",
"temporalScore": 5.0,
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:L",
"version": "3.1"
},
"products": [
"16820-1"
]
}
],
"title": "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."
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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