gsd-2020-29570
Vulnerability from gsd
Modified
2023-12-13 01:22
Details
An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2020-29570",
"description": "An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.",
"id": "GSD-2020-29570",
"references": [
"https://www.suse.com/security/cve/CVE-2020-29570.html",
"https://www.debian.org/security/2020/dsa-4812",
"https://linux.oracle.com/cve/CVE-2020-29570.html"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
"CVE-2020-29570"
],
"details": "An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system.",
"id": "GSD-2020-29570",
"modified": "2023-12-13T01:22:11.551745Z",
"schema_version": "1.4.0"
}
},
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"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "n/a",
"version": {
"version_data": [
{
"version_value": "n/a"
}
]
}
}
]
},
"vendor_name": "n/a"
}
]
}
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"description": {
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"value": "An issue was discovered in Xen through 4.14.x. Recording of the per-vCPU control block mapping maintained by Xen and that of pointers into the control block is reversed. The consumer assumes, seeing the former initialized, that the latter are also ready for use. Malicious or buggy guest kernels can mount a Denial of Service (DoS) attack affecting the entire system."
}
]
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"name": "https://xenbits.xenproject.org/xsa/advisory-358.html",
"refsource": "MISC",
"url": "https://xenbits.xenproject.org/xsa/advisory-358.html"
},
{
"name": "DSA-4812",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2020/dsa-4812"
},
{
"name": "[oss-security] 20201216 Xen Security Advisory 358 v5 (CVE-2020-29570) - FIFO event channels control block related ordering",
"refsource": "MLIST",
"url": "http://www.openwall.com/lists/oss-security/2020/12/16/4"
},
{
"name": "FEDORA-2020-64859a826b",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/"
},
{
"name": "FEDORA-2020-df772b417b",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/"
},
{
"name": "GLSA-202107-30",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202107-30"
}
]
}
},
"nvd.nist.gov": {
"configurations": {
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"nodes": [
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"cpe23Uri": "cpe:2.3:o:xen:xen:*:*:*:*:*:*:*:*",
"cpe_name": [],
"versionEndIncluding": "4.14.0",
"versionStartIncluding": "4.4.0",
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"description": {
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}
]
},
"problemtype": {
"problemtype_data": [
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"value": "CWE-770"
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"references": {
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"refsource": "MISC",
"tags": [
"Patch",
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"url": "https://xenbits.xenproject.org/xsa/advisory-358.html"
},
{
"name": "DSA-4812",
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},
{
"name": "[oss-security] 20201216 Xen Security Advisory 358 v5 (CVE-2020-29570) - FIFO event channels control block related ordering",
"refsource": "MLIST",
"tags": [
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"url": "http://www.openwall.com/lists/oss-security/2020/12/16/4"
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{
"name": "FEDORA-2020-64859a826b",
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"tags": [
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI/"
},
{
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"tags": [
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA/"
},
{
"name": "GLSA-202107-30",
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"tags": [
"Third Party Advisory"
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"url": "https://security.gentoo.org/glsa/202107-30"
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]
}
},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "COMPLETE",
"baseScore": 4.9,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "LOCAL",
"availabilityImpact": "HIGH",
"baseScore": 6.2,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 2.5,
"impactScore": 3.6
}
},
"lastModifiedDate": "2021-12-10T02:04Z",
"publishedDate": "2020-12-15T17:15Z"
}
}
}
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Sightings
| Author | Source | Type | Date |
|---|
Nomenclature
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- Confirmed: The vulnerability is confirmed from an analyst perspective.
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- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.