github - ghsa-3hcc-26vj-rvhq

ghsa-3hcc-26vj-rvhq

Vulnerability from github

Published

2022-01-06 00:00

Modified

2022-03-17 00:06

Severity ?

6.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Details

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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-28711"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-01-05T17:15:00Z",
    "severity": "MODERATE"
  },
  "details": "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": "GHSA-3hcc-26vj-rvhq",
  "modified": "2022-03-17T00:06:18Z",
  "published": "2022-01-06T00:00:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-28711"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html"
    },
    {
      "type": "WEB",
      "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5050"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5096"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-391.txt"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

cve-2021-28711

Vulnerability from cvelistv5

Published

2022-01-05 16:10

Modified

2024-08-03 21:47

Severity ?

Summary

References

▼	URL	Tags
	https://xenbits.xenproject.org/xsa/advisory-391.txt	x_refsource_MISC
	https://www.debian.org/security/2022/dsa-5050	vendor-advisory, x_refsource_DEBIAN
	https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html	mailing-list, x_refsource_MLIST
	https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html	mailing-list, x_refsource_MLIST
	https://www.debian.org/security/2022/dsa-5096	vendor-advisory, x_refsource_DEBIAN

Impacted products

▼	Vendor	Product
	Linux	Linux

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T21:47:33.240Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-391.txt"
          },
          {
            "name": "DSA-5050",
            "tags": [
              "vendor-advisory",
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              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5050"
          },
          {
            "name": "[debian-lts-announce] 20220309 [SECURITY] [DLA 2940-1] linux security update",
            "tags": [
              "mailing-list",
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              "x_transferred"
            ],
            "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00011.html"
          },
          {
            "name": "[debian-lts-announce] 20220309 [SECURITY] [DLA 2941-1] linux-4.19 security update",
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            "tags": [
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              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5096"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "Linux",
          "vendor": "Linux",
          "versions": [
            {
              "status": "unknown",
              "version": "consult Xen advisory XSA-391"
            }
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        }
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        }
      ],
      "metrics": [
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                  }
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      "references": [
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          ],
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        },
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          "tags": [
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          "url": "https://lists.debian.org/debian-lts-announce/2022/03/msg00012.html"
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        }
      ],
      "x_legacyV4Record": {
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        "affects": {
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        "configuration": {
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                }
              ]
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        },
        "credit": {
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            }
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                  "value": "Potentially malicious PV backends can cause guest DoS due to unhardened\nfrontends in the guests, even though this ought to have been prevented by\ncontaining them within a driver domain."
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            },
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              "refsource": "MLIST",
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  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2021-28711",
    "datePublished": "2022-01-05T16:10:22",
    "dateReserved": "2021-03-18T00:00:00",
    "dateUpdated": "2024-08-03T21:47:33.240Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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