Vulnerability-Lookup

GHSA-2872-89WH-3FRC

Vulnerability from github – Published: 2021-12-17 00:00 – Updated: 2022-03-30 00:02

Details

The ksmbd server through 3.4.2, as used in the Linux kernel through 5.15.8, sometimes communicates in cleartext even though encryption has been enabled. This occurs because it sets the SMB2_GLOBAL_CAP_ENCRYPTION flag when using the SMB 3.1.1 protocol, which is a violation of the SMB protocol specification. When Windows 10 detects this protocol violation, it disables encryption.

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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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2021-45100"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-319"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2021-12-16T05:15:00Z",
    "severity": "HIGH"
  },
  "details": "The ksmbd server through 3.4.2, as used in the Linux kernel through 5.15.8, sometimes communicates in cleartext even though encryption has been enabled. This occurs because it sets the SMB2_GLOBAL_CAP_ENCRYPTION flag when using the SMB 3.1.1 protocol, which is a violation of the SMB protocol specification. When Windows 10 detects this protocol violation, it disables encryption.",
  "id": "GHSA-2872-89wh-3frc",
  "modified": "2022-03-30T00:02:00Z",
  "published": "2021-12-17T00:00:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-45100"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cifsd-team/ksmbd/issues/550"
    },
    {
      "type": "WEB",
      "url": "https://github.com/cifsd-team/ksmbd/pull/551"
    },
    {
      "type": "WEB",
      "url": "https://marc.info/?l=linux-kernel\u0026m=163961726017023\u0026w=2"
    },
    {
      "type": "WEB",
      "url": "https://security.netapp.com/advisory/ntap-20220107-0001"
    }
  ],
  "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-2021-45100 (GCVE-0-2021-45100)

Vulnerability from cvelistv5 – Published: 2021-12-16 04:37 – Updated: 2024-08-04 04:32

Summary

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 29/100 over 2361 records in the last 180 days details

References

4 references

URL	Tags
https://github.com/cifsd-team/ksmbd/issues/550	x_refsource_MISC
https://github.com/cifsd-team/ksmbd/pull/551	x_refsource_MISC
https://marc.info/?l=linux-kernel&m=163961726017023&w=2	x_refsource_MISC
https://security.netapp.com/advisory/ntap-2022010…	x_refsource_CONFIRM

Show details on NVD website

JSON

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{
  "containers": {
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      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T04:32:13.649Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://github.com/cifsd-team/ksmbd/issues/550"
          },
          {
            "tags": [
              "x_refsource_MISC",
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            ],
            "url": "https://github.com/cifsd-team/ksmbd/pull/551"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://marc.info/?l=linux-kernel\u0026m=163961726017023\u0026w=2"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
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            ],
            "url": "https://security.netapp.com/advisory/ntap-20220107-0001/"
          }
        ],
        "title": "CVE Program Container"
      }
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        }
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            }
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          "url": "https://security.netapp.com/advisory/ntap-20220107-0001/"
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            },
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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.

Vulnerability timeline

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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.

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