FKIE_CVE-2021-3571

Vulnerability from fkie_nvd - Published: 2021-07-09 11:15 - Updated: 2026-06-17 04:05
Severity
7.1 (High) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H
Summary
A flaw was found in the ptp4l program of the linuxptp package. When ptp4l is operating on a little-endian architecture as a PTP transparent clock, a remote attacker could send a crafted one-step sync message to cause an information leak or crash. The highest threat from this vulnerability is to data confidentiality and system availability. This flaw affects linuxptp versions before 3.1.1 and before 2.0.1.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=1966241Issue Tracking, Patch, Third Party Advisory
secalert@redhat.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RHRUVSDP673LXJ5HGIPQPWPIYUPWYQA7/
secalert@redhat.comhttps://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUBKTRCMJ6VKS7DIBSZQB4ATSKVCJYXJ/
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=1966241Issue Tracking, Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/RHRUVSDP673LXJ5HGIPQPWPIYUPWYQA7/
af854a3a-2127-422b-91ae-364da2661108https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/VUBKTRCMJ6VKS7DIBSZQB4ATSKVCJYXJ/
Impacted products
Vendor Product Version
linuxptp_project linuxptp *
linuxptp_project linuxptp *
redhat enterprise_linux 8.0
fedoraproject fedora 33
fedoraproject fedora 34
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "linuxptp",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "linuxptp 3.1.1, linuxptp 2.0.1"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
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  "cveTags": [],
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      "lang": "en",
      "value": "A flaw was found in the ptp4l program of the linuxptp package. When ptp4l is operating on a little-endian architecture as a PTP transparent clock, a remote attacker could send a crafted one-step sync message to cause an information leak or crash. The highest threat from this vulnerability is to data confidentiality and system availability. This flaw affects linuxptp versions before 3.1.1 and before 2.0.1."
    },
    {
      "lang": "es",
      "value": "Se ha encontrado un fallo en el programa ptp4l del paquete linuxptp. Cuando ptp4l est\u00e1 operando en una arquitectura little-endian como transparent clock PTP, un atacante remoto podr\u00eda enviar un mensaje de sincronizaci\u00f3n de un paso dise\u00f1ado para causar un filtrado de informaci\u00f3n o un bloqueo. La mayor amenaza de esta vulnerabilidad es la confidencialidad de los datos y la disponibilidad del sistema. Este fallo afecta a versiones de linuxptp anteriores a 3.1.1 y anteriores a 2.0.1"
    }
  ],
  "id": "CVE-2021-3571",
  "lastModified": "2026-06-17T04:05:21.800",
  "metrics": {
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        "baseSeverity": "MEDIUM",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "NETWORK",
          "authentication": "SINGLE",
          "availabilityImpact": "PARTIAL",
          "baseScore": 5.5,
          "confidentialityImpact": "PARTIAL",
          "integrityImpact": "NONE",
          "vectorString": "AV:N/AC:L/Au:S/C:P/I:N/A:P",
          "version": "2.0"
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        "exploitabilityScore": 8.0,
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  "published": "2021-07-09T11:15:08.960",
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  "vulnStatus": "Modified",
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      "source": "nvd@nist.gov",
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    }
  ]
}



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