CVE-2021-44142 (GCVE-0-2021-44142)

Vulnerability from cvelistv5 – Published: 2022-02-21 14:30 – Updated: 2025-04-23 19:02
VLAI
Summary
The Samba vfs_fruit module uses extended file attributes (EA, xattr) to provide "...enhanced compatibility with Apple SMB clients and interoperability with a Netatalk 3 AFP fileserver." Samba versions prior to 4.13.17, 4.14.12 and 4.15.5 with vfs_fruit configured allow out-of-bounds heap read and write via specially crafted extended file attributes. A remote attacker with write access to extended file attributes can execute arbitrary code with the privileges of smbd, typically root.
Severity
8.8 (High)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Samba Samba Affected: unspecified , < 4.13.17 (custom)
Affected: unspecified , < 4.14.12 (custom)
Affected: unspecified , < 4.15.5 (custom)
Create a notification for this product.
Date Public
2022-01-31 00:00
Show details on NVD website
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      "id": "CVE-2021-44142",
      "lastModified": "2024-11-21T06:30:25.637",
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      "published": "2022-02-21T15:15:07.380",
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    },
    "microsoft_vex": {
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      "cve": "CVE-2021-44142",
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      "product_status:fixed": "1",
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      "url": "https://msrc.microsoft.com/csaf/vex/2022/msrc_cve-2021-44142.json",
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      "cve": "CVE-2021-44142",
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      "initial_release_date": "2021-01-01T00:00:00+00:00",
      "product_status:fixed": "3284",
      "product_status:known_not_affected": "66",
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      "status": "final",
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      "product_status:known_not_affected": "65",
      "product_status:recommended": "4072",
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      "version": "44"
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  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.