cve-2021-28700
Vulnerability from cvelistv5
Published
2021-08-27 18:15
Modified
2024-08-03 21:47
Severity ?
EPSS score ?
Summary
xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured.
References
{
"containers": {
"adp": [
{
"providerMetadata": {
"dateUpdated": "2024-08-03T21:47:33.168Z",
"orgId": "af854a3a-2127-422b-91ae-364da2661108",
"shortName": "CVE"
},
"references": [
{
"tags": [
"x_refsource_MISC",
"x_transferred"
],
"url": "https://xenbits.xenproject.org/xsa/advisory-383.txt"
},
{
"name": "FEDORA-2021-4f129cc0c1",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPRVHW4J4ZCPPOHZEWP5MOJT7XDGFFPJ/"
},
{
"name": "FEDORA-2021-d68ed12e46",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZCNPSRPGFCQRYE2BI4D4Q4SCE56ANV2/"
},
{
"name": "DSA-4977",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN",
"x_transferred"
],
"url": "https://www.debian.org/security/2021/dsa-4977"
},
{
"name": "FEDORA-2021-081f9bf5d2",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA",
"x_transferred"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2VQCFAPBNGBBAOMJZG6QBREOG5IIDZID/"
},
{
"name": "GLSA-202208-23",
"tags": [
"vendor-advisory",
"x_refsource_GENTOO",
"x_transferred"
],
"url": "https://security.gentoo.org/glsa/202208-23"
}
],
"title": "CVE Program Container"
}
],
"cna": {
"affected": [
{
"product": "xen",
"vendor": "Xen",
"versions": [
{
"status": "affected",
"version": "4.12.x"
}
]
},
{
"product": "xen",
"vendor": "Xen",
"versions": [
{
"lessThan": "4.12",
"status": "unknown",
"version": "unspecified",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "affected",
"version": "4.13.x",
"versionType": "custom"
},
{
"lessThan": "unspecified",
"status": "unaffected",
"version": "next of xen-unstable",
"versionType": "custom"
}
]
}
],
"credits": [
{
"lang": "en",
"value": "{\u0027credit_data\u0027: {\u0027description\u0027: {\u0027description_data\u0027: [{\u0027lang\u0027: \u0027eng\u0027, \u0027value\u0027: \u0027This issue was discovered by Julien Grall of Amazon.\u0027}]}}}"
}
],
"descriptions": [
{
"lang": "en",
"value": "xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured."
}
],
"metrics": [
{
"other": {
"content": {
"description": {
"description_data": [
{
"lang": "eng",
"value": "Malicious dom0less guest could drive Xen out of memory and may\nresult to a Denial of Service (DoS) attack affecting the entire\nsystem."
}
]
}
},
"type": "unknown"
}
}
],
"problemTypes": [
{
"descriptions": [
{
"description": "unknown",
"lang": "en",
"type": "text"
}
]
}
],
"providerMetadata": {
"dateUpdated": "2022-08-14T20:06:06",
"orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
"shortName": "XEN"
},
"references": [
{
"tags": [
"x_refsource_MISC"
],
"url": "https://xenbits.xenproject.org/xsa/advisory-383.txt"
},
{
"name": "FEDORA-2021-4f129cc0c1",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPRVHW4J4ZCPPOHZEWP5MOJT7XDGFFPJ/"
},
{
"name": "FEDORA-2021-d68ed12e46",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZCNPSRPGFCQRYE2BI4D4Q4SCE56ANV2/"
},
{
"name": "DSA-4977",
"tags": [
"vendor-advisory",
"x_refsource_DEBIAN"
],
"url": "https://www.debian.org/security/2021/dsa-4977"
},
{
"name": "FEDORA-2021-081f9bf5d2",
"tags": [
"vendor-advisory",
"x_refsource_FEDORA"
],
"url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2VQCFAPBNGBBAOMJZG6QBREOG5IIDZID/"
},
{
"name": "GLSA-202208-23",
"tags": [
"vendor-advisory",
"x_refsource_GENTOO"
],
"url": "https://security.gentoo.org/glsa/202208-23"
}
],
"x_legacyV4Record": {
"CVE_data_meta": {
"ASSIGNER": "security@xen.org",
"ID": "CVE-2021-28700",
"STATE": "PUBLIC"
},
"affects": {
"vendor": {
"vendor_data": [
{
"product": {
"product_data": [
{
"product_name": "xen",
"version": {
"version_data": [
{
"version_value": "4.12.x"
}
]
}
},
{
"product_name": "xen",
"version": {
"version_data": [
{
"version_affected": "?\u003c",
"version_value": "4.12"
},
{
"version_affected": "\u003e=",
"version_value": "4.13.x"
},
{
"version_affected": "!\u003e",
"version_value": "xen-unstable"
}
]
}
}
]
},
"vendor_name": "Xen"
}
]
}
},
"configuration": {
"configuration_data": {
"description": {
"description_data": [
{
"lang": "eng",
"value": "Only Arm systems are vulnerable. Only domains created using the\ndom0less feature are affected.\n\nOnly domains created using the dom0less feature can leverage the\nvulnerability.\n\nAll versions of Xen since 4.12 are vulnerable."
}
]
}
}
},
"credit": {
"credit_data": {
"description": {
"description_data": [
{
"lang": "eng",
"value": "This issue was discovered by Julien Grall of Amazon."
}
]
}
}
},
"data_format": "MITRE",
"data_type": "CVE",
"data_version": "4.0",
"description": {
"description_data": [
{
"lang": "eng",
"value": "xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured."
}
]
},
"impact": {
"impact_data": {
"description": {
"description_data": [
{
"lang": "eng",
"value": "Malicious dom0less guest could drive Xen out of memory and may\nresult to a Denial of Service (DoS) attack affecting the entire\nsystem."
}
]
}
}
},
"problemtype": {
"problemtype_data": [
{
"description": [
{
"lang": "eng",
"value": "unknown"
}
]
}
]
},
"references": {
"reference_data": [
{
"name": "https://xenbits.xenproject.org/xsa/advisory-383.txt",
"refsource": "MISC",
"url": "https://xenbits.xenproject.org/xsa/advisory-383.txt"
},
{
"name": "FEDORA-2021-4f129cc0c1",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/LPRVHW4J4ZCPPOHZEWP5MOJT7XDGFFPJ/"
},
{
"name": "FEDORA-2021-d68ed12e46",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZCNPSRPGFCQRYE2BI4D4Q4SCE56ANV2/"
},
{
"name": "DSA-4977",
"refsource": "DEBIAN",
"url": "https://www.debian.org/security/2021/dsa-4977"
},
{
"name": "FEDORA-2021-081f9bf5d2",
"refsource": "FEDORA",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2VQCFAPBNGBBAOMJZG6QBREOG5IIDZID/"
},
{
"name": "GLSA-202208-23",
"refsource": "GENTOO",
"url": "https://security.gentoo.org/glsa/202208-23"
}
]
},
"workaround": {
"workaround_data": {
"description": {
"description_data": [
{
"lang": "eng",
"value": "There is no known mitigation."
}
]
}
}
}
}
}
},
"cveMetadata": {
"assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
"assignerShortName": "XEN",
"cveId": "CVE-2021-28700",
"datePublished": "2021-08-27T18:15:52",
"dateReserved": "2021-03-18T00:00:00",
"dateUpdated": "2024-08-03T21:47:33.168Z",
"state": "PUBLISHED"
},
"dataType": "CVE_RECORD",
"dataVersion": "5.1",
"meta": {
"nvd": "{\"cve\":{\"id\":\"CVE-2021-28700\",\"sourceIdentifier\":\"security@xen.org\",\"published\":\"2021-08-27T19:15:07.880\",\"lastModified\":\"2023-11-07T03:32:19.790\",\"vulnStatus\":\"Modified\",\"descriptions\":[{\"lang\":\"en\",\"value\":\"xen/arm: No memory limit for dom0less domUs The dom0less feature allows an administrator to create multiple unprivileged domains directly from Xen. Unfortunately, the memory limit from them is not set. This allow a domain to allocate memory beyond what an administrator originally configured.\"},{\"lang\":\"es\",\"value\":\"xen/arm: No se presenta un l\u00edmite de memoria para dom0less domUs. La funcionalidad dom0less permite a un administrador crear m\u00faltiples dominios no privilegiado directamente desde Xen. Desafortunadamente, el l\u00edmite de memoria de los mismos no est\u00e1 ajustado. Esto permite a un dominio asignar memoria m\u00e1s all\u00e1 de lo que un administrador configur\u00f3 originalmente.\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H\",\"attackVector\":\"NETWORK\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"HIGH\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\",\"baseScore\":4.9,\"baseSeverity\":\"MEDIUM\"},\"exploitabilityScore\":1.2,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:N/AC:L/Au:S/C:N/I:N/A:C\",\"accessVector\":\"NETWORK\",\"accessComplexity\":\"LOW\",\"authentication\":\"SINGLE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\",\"baseScore\":6.8},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":8.0,\"impactScore\":6.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-770\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:xen:xen:*:*:*:*:*:*:arm:*\",\"versionStartIncluding\":\"4.12.0\",\"matchCriteriaId\":\"396875EE-05D8-4BD5-B345-9E6FB343C02B\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:33:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E460AA51-FCDA-46B9-AE97-E6676AA5E194\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A930E247-0B43-43CB-98FF-6CE7B8189835\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"80E516C0-98A4-4ADE-B69F-66A772E2BAAA\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:debian:debian_linux:11.0:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"FA6FEEC2-9F11-4643-8827-749718254FED\"}]}]}],\"references\":[{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2VQCFAPBNGBBAOMJZG6QBREOG5IIDZID/\",\"source\":\"security@xen.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/FZCNPSRPGFCQRYE2BI4D4Q4SCE56ANV2/\",\"source\":\"security@xen.org\"},{\"url\":\"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LPRVHW4J4ZCPPOHZEWP5MOJT7XDGFFPJ/\",\"source\":\"security@xen.org\"},{\"url\":\"https://security.gentoo.org/glsa/202208-23\",\"source\":\"security@xen.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.debian.org/security/2021/dsa-4977\",\"source\":\"security@xen.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://xenbits.xenproject.org/xsa/advisory-383.txt\",\"source\":\"security@xen.org\",\"tags\":[\"Vendor Advisory\"]}]}}"
}
}
Loading...
Loading...
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.
- 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.