GSD-2021-28700
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
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.
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-28700",
"description": "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.",
"id": "GSD-2021-28700",
"references": [
"https://www.suse.com/security/cve/CVE-2021-28700.html",
"https://www.debian.org/security/2021/dsa-4977"
]
},
"gsd": {
"metadata": {
"exploitCode": "unknown",
"remediation": "unknown",
"reportConfidence": "confirmed",
"type": "vulnerability"
},
"osvSchema": {
"aliases": [
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],
"details": "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.",
"id": "GSD-2021-28700",
"modified": "2023-12-13T01:23:29.057744Z",
"schema_version": "1.4.0"
}
},
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"STATE": "PUBLIC"
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{
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"version": {
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{
"version_value": "4.12.x"
}
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}
},
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"version_data": [
{
"version_affected": "?\u003c",
"version_value": "4.12"
},
{
"version_affected": "\u003e=",
"version_value": "4.13.x"
},
{
"version_affected": "!\u003e",
"version_value": "xen-unstable"
}
]
}
}
]
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"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."
}
]
}
}
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}
]
},
"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."
}
]
}
}
},
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"value": "unknown"
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"name": "https://xenbits.xenproject.org/xsa/advisory-383.txt",
"refsource": "MISC",
"url": "https://xenbits.xenproject.org/xsa/advisory-383.txt"
},
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"name": "FEDORA-2021-d68ed12e46",
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"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/FZCNPSRPGFCQRYE2BI4D4Q4SCE56ANV2/"
},
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"name": "DSA-4977",
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"url": "https://www.debian.org/security/2021/dsa-4977"
},
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},
{
"name": "GLSA-202208-23",
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"url": "https://security.gentoo.org/glsa/202208-23"
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"description": {
"description_data": [
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"lang": "eng",
"value": "There is no known mitigation."
}
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}
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},
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}
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"name": "https://xenbits.xenproject.org/xsa/advisory-383.txt",
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"tags": [
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"url": "https://xenbits.xenproject.org/xsa/advisory-383.txt"
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},
"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "NETWORK",
"authentication": "SINGLE",
"availabilityImpact": "COMPLETE",
"baseScore": 6.8,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:N/AC:L/Au:S/C:N/I:N/A:C",
"version": "2.0"
},
"exploitabilityScore": 8.0,
"impactScore": 6.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "MEDIUM",
"userInteractionRequired": false
},
"baseMetricV3": {
"cvssV3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "HIGH",
"baseScore": 4.9,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "HIGH",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H",
"version": "3.1"
},
"exploitabilityScore": 1.2,
"impactScore": 3.6
}
},
"lastModifiedDate": "2022-10-28T13:45Z",
"publishedDate": "2021-08-27T19:15Z"
}
}
}
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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
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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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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