gsd-2021-3682
Vulnerability from gsd
Modified
2023-12-13 01:23
Details
A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-3682",
"description": "A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.",
"id": "GSD-2021-3682",
"references": [
"https://www.suse.com/security/cve/CVE-2021-3682.html",
"https://www.debian.org/security/2021/dsa-4980",
"https://access.redhat.com/errata/RHSA-2021:3704",
"https://access.redhat.com/errata/RHSA-2021:3703",
"https://ubuntu.com/security/CVE-2021-3682",
"https://security.archlinux.org/CVE-2021-3682",
"https://linux.oracle.com/cve/CVE-2021-3682.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2021-3682"
],
"details": "A flaw was found in the USB redirector device emulation of QEMU in versions prior to 6.1.0-rc2. It occurs when dropping packets during a bulk transfer from a SPICE client due to the packet queue being full. A malicious SPICE client could use this flaw to make QEMU call free() with faked heap chunk metadata, resulting in a crash of QEMU or potential code execution with the privileges of the QEMU process on the host.",
"id": "GSD-2021-3682",
"modified": "2023-12-13T01:23:34.611174Z",
"schema_version": "1.4.0"
}
},
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"affects": {
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{
"product": {
"product_data": [
{
"product_name": "QEMU",
"version": {
"version_data": [
{
"version_value": "qemu 6.1.0-rc2"
}
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}
]
},
"problemtype": {
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"value": "CWE-763"
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},
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},
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"url": "https://www.debian.org/security/2021/dsa-4980"
},
{
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"url": "https://security.gentoo.org/glsa/202208-27"
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"nvd.nist.gov": {
"configurations": {
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"nodes": [
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"cpe_name": [],
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"operator": "OR"
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{
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"cpe_match": [
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"description": {
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"problemtype": {
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"references": {
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "MEDIUM",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "PARTIAL",
"baseScore": 6.0,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "PARTIAL",
"vectorString": "AV:N/AC:M/Au:S/C:P/I:P/A:P",
"version": "2.0"
},
"exploitabilityScore": 6.8,
"impactScore": 6.4,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "HIGH",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 8.5,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "LOW",
"scope": "CHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.8,
"impactScore": 6.0
}
},
"lastModifiedDate": "2023-03-31T18:26Z",
"publishedDate": "2021-08-05T20:15Z"
}
}
}
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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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