FKIE_CVE-2021-3713
Vulnerability from fkie_nvd - Published: 2021-08-25 19:15 - Updated: 2024-11-21 06:22
Severity ?
Summary
An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice->data3 and UASDevice->status3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| qemu | qemu | * | |
| debian | debian_linux | 9.0 | |
| debian | debian_linux | 10.0 | |
| debian | debian_linux | 11.0 |
{
"configurations": [
{
"nodes": [
{
"cpeMatch": [
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"criteria": "cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:*",
"matchCriteriaId": "EC80910C-B342-4E0D-AC78-7F5118A8DDC8",
"versionEndIncluding": "6.1.0",
"vulnerable": true
}
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"negate": false,
"operator": "OR"
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]
},
{
"nodes": [
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"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*",
"matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252",
"vulnerable": true
},
{
"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
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],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "An out-of-bounds write flaw was found in the UAS (USB Attached SCSI) device emulation of QEMU in versions prior to 6.2.0-rc0. The device uses the guest supplied stream number unchecked, which can lead to out-of-bounds access to the UASDevice-\u003edata3 and UASDevice-\u003estatus3 fields. A malicious guest user could use this flaw to crash QEMU or potentially achieve code execution with the privileges of the QEMU process on the host."
},
{
"lang": "es",
"value": "Se ha detectado un fallo de escritura fuera de l\u00edmites en la emulaci\u00f3n del dispositivo UAS (USB Attached SCSI) de QEMU en versiones anteriores a 6.2.0-rc0. El dispositivo usa el n\u00famero de flujo suministrado por el hu\u00e9sped sin comprobar, lo que puede conllevar a un acceso fuera de l\u00edmites a los campos UASDevice-)data3 y UASDevice-)status3. Un usuario invitado malicioso podr\u00eda usar este fallo para bloquear QEMU o lograr potencialmente una ejecuci\u00f3n de c\u00f3digo con los privilegios del proceso QEMU en el host."
}
],
"id": "CVE-2021-3713",
"lastModified": "2024-11-21T06:22:13.633",
"metrics": {
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"accessVector": "LOCAL",
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"baseScore": 4.6,
"confidentialityImpact": "PARTIAL",
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"vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P",
"version": "2.0"
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"baseScore": 7.4,
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"scope": "CHANGED",
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"published": "2021-08-25T19:15:15.073",
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"sourceIdentifier": "secalert@redhat.com",
"vulnStatus": "Modified",
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],
"source": "nvd@nist.gov",
"type": "Secondary"
}
]
}
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Sightings
| Author | Source | Type | Date |
|---|
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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