github - ghsa-f444-f4gw-jhg6

GHSA-F444-F4GW-JHG6

Vulnerability from github – Published: 2022-05-24 17:42 – Updated: 2022-05-24 17:42

Details

An issue was discovered in Xen through 4.11.x, allowing x86 Intel HVM guest OS users to achieve unintended read/write DMA access, and possibly cause a denial of service (host OS crash) or gain privileges. This occurs because a backport missed a flush, and thus IOMMU updates were not always correct. NOTE: this issue exists because of an incomplete fix for CVE-2020-15565.

Severity ?

7.8 (High)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Show details on source website

JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2021-27379"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-269"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-02-18T17:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Xen through 4.11.x, allowing x86 Intel HVM guest OS users to achieve unintended read/write DMA access, and possibly cause a denial of service (host OS crash) or gain privileges. This occurs because a backport missed a flush, and thus IOMMU updates were not always correct. NOTE: this issue exists because of an incomplete fix for CVE-2020-15565.",
  "id": "GHSA-f444-f4gw-jhg6",
  "modified": "2022-05-24T17:42:38Z",
  "published": "2022-05-24T17:42:38Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-27379"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2021/dsa-4888"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xen.org/xsa/advisory-366.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/02/23/1"
    },
    {
      "type": "WEB",
      "url": "http://xenbits.xen.org/xsa/advisory-366.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-27379 (GCVE-0-2021-27379)

Vulnerability from cvelistv5 – Published: 2021-02-18 15:05 – Updated: 2024-08-03 20:48

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	http://xenbits.xen.org/xsa/advisory-366.html	x_refsource_CONFIRM
	https://xenbits.xen.org/xsa/advisory-366.html	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2021/02/23/1	mailing-listx_refsource_MLIST
	https://www.debian.org/security/2021/dsa-4888	vendor-advisoryx_refsource_DEBIAN

Show details on NVD website

JSON

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          },
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Sightings

Author	Source	Type	Date

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.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-F444-F4GW-JHG6

CVE-2021-27379 (GCVE-0-2021-27379)

Tags

Sightings

Nomenclature