github - ghsa-7627-2wxq-jrmh

GHSA-7627-2WXQ-JRMH

Vulnerability from github – Published: 2022-05-24 17:32 – Updated: 2022-05-24 17:32

Details

An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.

Severity ?

7.0 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2020-27672"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-362"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-10-22T21:15:00Z",
    "severity": "HIGH"
  },
  "details": "An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a host OS denial of service, achieve data corruption, or possibly gain privileges by exploiting a race condition that leads to a use-after-free involving 2MiB and 1GiB superpages.",
  "id": "GHSA-7627-2wxq-jrmh",
  "modified": "2022-05-24T17:32:01Z",
  "published": "2022-05-24T17:32:01Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-27672"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XIK57QJOVOPWH6RFRNMGOBCROBCKMDG2"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202011-06"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4804"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xen.org/xsa/advisory-345.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html"
    },
    {
      "type": "WEB",
      "url": "http://lists.opensuse.org/opensuse-security-announce/2020-11/msg00025.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2021/01/19/7"
    },
    {
      "type": "WEB",
      "url": "http://xenbits.xen.org/xsa/advisory-345.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2020-27672 (GCVE-0-2020-27672)

Vulnerability from cvelistv5 – Published: 2020-10-22 20:33 – Updated: 2024-08-04 16:18

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	http://xenbits.xen.org/xsa/advisory-345.html	x_refsource_CONFIRM
	https://xenbits.xen.org/xsa/advisory-345.html	x_refsource_MISC
	http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
	http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
	https://security.gentoo.org/glsa/202011-06	vendor-advisoryx_refsource_GENTOO
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://www.debian.org/security/2020/dsa-4804	vendor-advisoryx_refsource_DEBIAN
	http://www.openwall.com/lists/oss-security/2021/01/19/7	mailing-listx_refsource_MLIST

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JSON

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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-7627-2WXQ-JRMH

CVE-2020-27672 (GCVE-0-2020-27672)

Tags

Sightings

Nomenclature