Vulnerability-Lookup

GHSA-P9CH-H5P3-4XCQ

Vulnerability from github – Published: 2022-08-24 00:00 – Updated: 2022-08-29 20:06

Details

A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.

Severity

7.5 (High)


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

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{
  "affected": [],
  "aliases": [
    "CVE-2021-3714"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-200"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-08-23T16:15:00Z",
    "severity": "HIGH"
  },
  "details": "A flaw was found in the Linux kernels memory deduplication mechanism. Previous work has shown that memory deduplication can be attacked via a local exploitation mechanism. The same technique can be used if an attacker can upload page sized files and detect the change in access time from a networked service to determine if the page has been merged.",
  "id": "GHSA-p9ch-h5p3-4xcq",
  "modified": "2022-08-29T20:06:47Z",
  "published": "2022-08-24T00:00:29Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3714"
    },
    {
      "type": "WEB",
      "url": "https://access.redhat.com/security/cve/CVE-2021-3714"
    },
    {
      "type": "WEB",
      "url": "https://arxiv.org/abs/2111.08553"
    },
    {
      "type": "WEB",
      "url": "https://arxiv.org/pdf/2111.08553.pdf"
    },
    {
      "type": "WEB",
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1931327"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-3714 (GCVE-0-2021-3714)

Vulnerability from cvelistv5 – Published: 2022-08-23 15:51 – Updated: 2024-08-03 17:01

Summary

Severity

No CVSS data available.

CWE

CWE-200 - - Exposure of Sensitive Information to an Unauthorized Actor

Assigner

redhat redhat root

References

4 references

URL	Tags
https://arxiv.org/abs/2111.08553	x_refsource_MISC
https://arxiv.org/pdf/2111.08553.pdf	x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=1931327	x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2021-3714	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
n/a	kernel	Affected: Not known

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:01:07.823Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
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              "x_transferred"
            ],
            "url": "https://arxiv.org/abs/2111.08553"
          },
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            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1931327"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://access.redhat.com/security/cve/CVE-2021-3714"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "kernel",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "Not known"
            }
          ]
        }
      ],
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        }
      ],
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          "descriptions": [
            {
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              "description": "CWE-200 - Exposure of Sensitive Information to an Unauthorized Actor",
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              "type": "CWE"
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      ],
      "providerMetadata": {
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  "cveMetadata": {
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    "assignerShortName": "redhat",
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    "datePublished": "2022-08-23T15:51:15.000Z",
    "dateReserved": "2021-08-18T00:00:00.000Z",
    "dateUpdated": "2024-08-03T17:01:07.823Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.