fkie_cve-2021-44142
Vulnerability from fkie_nvd
Published
2022-02-21 15:15
Modified
2025-04-23 19:15
Severity ?
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
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.
References
secalert@redhat.comhttps://bugzilla.samba.org/show_bug.cgi?id=14914
secalert@redhat.comhttps://kb.cert.org/vuls/id/119678
secalert@redhat.comhttps://security.gentoo.org/glsa/202309-06
secalert@redhat.comhttps://www.samba.org/samba/security/CVE-2021-44142.html
secalert@redhat.comhttps://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.samba.org/show_bug.cgi?id=14914
af854a3a-2127-422b-91ae-364da2661108https://kb.cert.org/vuls/id/119678
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202309-06
af854a3a-2127-422b-91ae-364da2661108https://www.kb.cert.org/vuls/id/119678
af854a3a-2127-422b-91ae-364da2661108https://www.samba.org/samba/security/CVE-2021-44142.html
af854a3a-2127-422b-91ae-364da2661108https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin
Impacted products
Vendor Product Version
samba samba *
samba samba *
samba samba *
debian debian_linux 10.0
debian debian_linux 11.0
canonical ubuntu_linux 14.04
canonical ubuntu_linux 16.04
canonical ubuntu_linux 18.04
canonical ubuntu_linux 20.04
canonical ubuntu_linux 21.10
synology diskstation_manager *
fedoraproject fedora 34
fedoraproject fedora 35
redhat codeready_linux_builder -
redhat gluster_storage 3.5
redhat virtualization_host 4.0
redhat enterprise_linux 7.0
redhat enterprise_linux 8.0
redhat enterprise_linux_desktop 7.0
redhat enterprise_linux_eus 8.2
redhat enterprise_linux_eus 8.4
redhat enterprise_linux_for_ibm_z_systems 7.0
redhat enterprise_linux_for_ibm_z_systems 8.0
redhat enterprise_linux_for_ibm_z_systems_eus 8.2
redhat enterprise_linux_for_ibm_z_systems_eus 8.4
redhat enterprise_linux_for_power_big_endian 7.0
redhat enterprise_linux_for_power_little_endian 7.0
redhat enterprise_linux_for_power_little_endian 8.0
redhat enterprise_linux_for_power_little_endian_eus 8.2
redhat enterprise_linux_for_power_little_endian_eus 8.4
redhat enterprise_linux_for_scientific_computing 7.0
redhat enterprise_linux_resilient_storage 7.0
redhat enterprise_linux_server 7.0
redhat enterprise_linux_server 8.1
redhat enterprise_linux_server_aus 8.2
redhat enterprise_linux_server_aus 8.4
redhat enterprise_linux_server_tus 8.2
redhat enterprise_linux_server_tus 8.4
redhat enterprise_linux_server_update_services_for_sap_solutions 8.1
redhat enterprise_linux_server_update_services_for_sap_solutions 8.2
redhat enterprise_linux_server_update_services_for_sap_solutions 8.4
redhat enterprise_linux_workstation 7.0


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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "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."
    },
    {
      "lang": "es",
      "value": "El m\u00f3dulo vfs_fruit de Samba usa atributos de archivo extendidos (EA, xattr) para proporcionar \"...compatibilidad mejorada con los clientes SMB de Apple e interoperabilidad con un servidor de archivos AFP de Netatalk 3\". Samba versiones anteriores a 4.13.17, 4.14.12 y 4.15.5 con vfs_fruit configurado permiten una lectura y escritura fuera de l\u00edmites de la pila por medio de atributos de archivo extendidos especialmente dise\u00f1ados. Un atacante remoto con acceso de escritura a los atributos de archivo extendidos puede ejecutar c\u00f3digo arbitrario con los privilegios de smbd, t\u00edpicamente root"
    }
  ],
  "id": "CVE-2021-44142",
  "lastModified": "2025-04-23T19:15:51.880",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 9.0,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:N/AC:L/Au:S/C:C/I:C/A:C",
          "version": "2.0"
        },
        "exploitabilityScore": 8.0,
        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
        "source": "nvd@nist.gov",
        "type": "Primary",
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "NETWORK",
          "availabilityImpact": "HIGH",
          "baseScore": 8.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 2.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ]
  },
  "published": "2022-02-21T15:15:07.380",
  "references": [
    {
      "source": "secalert@redhat.com",
      "url": "https://bugzilla.samba.org/show_bug.cgi?id=14914"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://kb.cert.org/vuls/id/119678"
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      "url": "https://www.samba.org/samba/security/CVE-2021-44142.html"
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      "url": "https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://bugzilla.samba.org/show_bug.cgi?id=14914"
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://kb.cert.org/vuls/id/119678"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/202309-06"
    },
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      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.kb.cert.org/vuls/id/119678"
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    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.samba.org/samba/security/CVE-2021-44142.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://www.zerodayinitiative.com/blog/2022/2/1/cve-2021-44142-details-on-a-samba-code-execution-bug-demonstrated-at-pwn2own-austin"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-125"
        },
        {
          "lang": "en",
          "value": "CWE-787"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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