github - ghsa-423g-qv8g-mgcc

GHSA-423G-QV8G-MGCC

Vulnerability from github – Published: 2022-05-24 17:36 – Updated: 2022-05-24 17:36

Details

An issue was discovered in Xen through 4.14.x. Nodes in xenstore have an ownership. In oxenstored, a owner could give a node away. However, node ownership has quota implications. Any guest can run another guest out of quota, or create an unbounded number of nodes owned by dom0, thus running xenstored out of memory A malicious guest administrator can cause a denial of service against a specific guest or against the whole host. All systems using oxenstored are vulnerable. Building and using oxenstored is the default in the upstream Xen distribution, if the Ocaml compiler is available. Systems using C xenstored are not vulnerable.

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{
  "affected": [],
  "aliases": [
    "CVE-2020-29486"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-770"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2020-12-15T18:15:00Z",
    "severity": "MODERATE"
  },
  "details": "An issue was discovered in Xen through 4.14.x. Nodes in xenstore have an ownership. In oxenstored, a owner could give a node away. However, node ownership has quota implications. Any guest can run another guest out of quota, or create an unbounded number of nodes owned by dom0, thus running xenstored out of memory A malicious guest administrator can cause a denial of service against a specific guest or against the whole host. All systems using oxenstored are vulnerable. Building and using oxenstored is the default in the upstream Xen distribution, if the Ocaml compiler is available. Systems using C xenstored are not vulnerable.",
  "id": "GHSA-423g-qv8g-mgcc",
  "modified": "2022-05-24T17:36:34Z",
  "published": "2022-05-24T17:36:34Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-29486"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/2C6M6S3CIMEBACH6O7V4H2VDANMO6TVA"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OBLV6L6Q24PPQ2CRFXDX4Q76KU776GKI"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202107-30"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2020/dsa-4812"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-352.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2020-29486 (GCVE-0-2020-29486)

Vulnerability from cvelistv5 – Published: 2020-12-15 18:00 – Updated: 2024-08-04 16:55

Summary

Severity ?

No CVSS data available.

CWE

Assigner

mitre

References

URL

Tags

	https://xenbits.xenproject.org/xsa/advisory-352.html	x_refsource_MISC
	https://www.debian.org/security/2020/dsa-4812	vendor-advisoryx_refsource_DEBIAN
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
	https://security.gentoo.org/glsa/202107-30	vendor-advisoryx_refsource_GENTOO

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          "dateUpdated": "2024-08-04T16:55:09.950Z",
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          },
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            "url": "https://www.debian.org/security/2020/dsa-4812"
          },
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          },
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                "vendor_name": "n/a"
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            },
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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-423G-QV8G-MGCC

CVE-2020-29486 (GCVE-0-2020-29486)

Tags

Sightings

Nomenclature