GSD-2021-28713
Vulnerability from gsd - Updated: 2023-12-13 01:23Details
Rogue backends can cause DoS of guests via high frequency events T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as "driver domains". Running PV backends in driver domains has one primary security advantage: if a driver domain gets compromised, it doesn't have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. There are three affected backends: * blkfront patch 1, CVE-2021-28711 * netfront patch 2, CVE-2021-28712 * hvc_xen (console) patch 3, CVE-2021-28713
Aliases
Aliases
{
"GSD": {
"alias": "CVE-2021-28713",
"description": "Rogue backends can cause DoS of guests via high frequency events T[his CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Xen offers the ability to run PV backends in regular unprivileged guests, typically referred to as \"driver domains\". Running PV backends in driver domains has one primary security advantage: if a driver domain gets compromised, it doesn\u0027t have the privileges to take over the system. However, a malicious driver domain could try to attack other guests via sending events at a high frequency leading to a Denial of Service in the guest due to trying to service interrupts for elongated amounts of time. There are three affected backends: * blkfront patch 1, CVE-2021-28711 * netfront patch 2, CVE-2021-28712 * hvc_xen (console) patch 3, CVE-2021-28713",
"id": "GSD-2021-28713",
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"https://www.suse.com/security/cve/CVE-2021-28713.html",
"https://www.debian.org/security/2022/dsa-5050",
"https://www.debian.org/security/2022/dsa-5096",
"https://ubuntu.com/security/CVE-2021-28713",
"https://advisories.mageia.org/CVE-2021-28713.html",
"https://alas.aws.amazon.com/cve/html/CVE-2021-28713.html"
]
},
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"remediation": "unknown",
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"id": "GSD-2021-28713",
"modified": "2023-12-13T01:23:29.357279Z",
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"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "PARTIAL",
"baseScore": 2.1,
"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
"version": "2.0"
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"baseScore": 6.5,
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"confidentialityImpact": "NONE",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "CHANGED",
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"vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
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},
"lastModifiedDate": "2022-04-06T16:35Z",
"publishedDate": "2022-01-05T17:15Z"
}
}
}
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