Vulnerability-Lookup

GHSA-5JMQ-X85F-GPRC

Vulnerability from github – Published: 2022-01-26 00:01 – Updated: 2022-03-26 00:01

Details

A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.

Severity

5.5 (Medium)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2022-23034"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-191"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-01-25T14:15:00Z",
    "severity": "MODERATE"
  },
  "details": "A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check.",
  "id": "GHSA-5jmq-x85f-gprc",
  "modified": "2022-03-26T00:01:04Z",
  "published": "2022-01-26T00:01:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23034"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202208-23"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5117"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-394.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2022/01/25/3"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2022-23034 (GCVE-0-2022-23034)

Vulnerability from cvelistv5 – Published: 2022-01-25 13:43 – Updated: 2024-08-03 03:28

Summary

Severity

No CVSS data available.

CWE

unknown

Assigner

XEN mitre root

References

5 references

URL	Tags
https://xenbits.xenproject.org/xsa/advisory-394.txt	x_refsource_MISC
http://www.openwall.com/lists/oss-security/2022/01/25/3	mailing-listx_refsource_MLIST
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2022/dsa-5117	vendor-advisoryx_refsource_DEBIAN
https://security.gentoo.org/glsa/202208-23	vendor-advisoryx_refsource_GENTOO

Impacted products

1 product

Vendor	Product	Version
Xen	xen	Unknown: consult Xen advisory XSA-394

Credits

{'credit_data': {'description': {'description_data': [{'lang': 'eng', 'value': 'This issue was discovered by Julien Grall of Amazon.'}]}}}

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T03:28:43.072Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        "references": [
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            "tags": [
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            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-394.txt"
          },
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            "name": "[oss-security] 20220125 Xen Security Advisory 394 v3 (CVE-2022-23034) - A PV guest could DoS Xen while unmapping a grant",
            "tags": [
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            "url": "http://www.openwall.com/lists/oss-security/2022/01/25/3"
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          },
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            "url": "https://www.debian.org/security/2022/dsa-5117"
          },
          {
            "name": "GLSA-202208-23",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202208-23"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
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          "vendor": "Xen",
          "versions": [
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          "value": "{\u0027credit_data\u0027: {\u0027description\u0027: {\u0027description_data\u0027: [{\u0027lang\u0027: \u0027eng\u0027, \u0027value\u0027: \u0027This issue was discovered by Julien Grall of Amazon.\u0027}]}}}"
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      "descriptions": [
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          "lang": "en",
          "value": "A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check."
        }
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      "metrics": [
        {
          "other": {
            "content": {
              "description": {
                "description_data": [
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                    "lang": "eng",
                    "value": "Malicious guest kernels may be able to mount a Denial of Service (DoS)\nattack affecting the entire system."
                  }
                ]
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        }
      ],
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        "dateUpdated": "2022-08-14T20:09:01.000Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
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          "url": "https://xenbits.xenproject.org/xsa/advisory-394.txt"
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          "tags": [
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                }
              ]
            }
          }
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        "credit": {
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        "description": {
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              "value": "A PV guest could DoS Xen while unmapping a grant To address XSA-380, reference counting was introduced for grant mappings for the case where a PV guest would have the IOMMU enabled. PV guests can request two forms of mappings. When both are in use for any individual mapping, unmapping of such a mapping can be requested in two steps. The reference count for such a mapping would then mistakenly be decremented twice. Underflow of the counters gets detected, resulting in the triggering of a hypervisor bug check."
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                }
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  "cveMetadata": {
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    "assignerShortName": "XEN",
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    "datePublished": "2022-01-25T13:43:08.000Z",
    "dateReserved": "2022-01-10T00:00:00.000Z",
    "dateUpdated": "2024-08-03T03:28:43.072Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.