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.

The remote CentOS Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the linuxptp-3.1.1-2.el9 build changelog.

  - A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a     PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially     remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity     as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before     1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1. (CVE-2021-3570)

  - 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.
    (CVE-2021-3571)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Rocky Linux 8 host has packages installed that are affected by a vulnerability as referenced in the RLSA-2021:4321 advisory.

  - 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.
    (CVE-2021-3571)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote AlmaLinux 8 host has a package installed that is affected by a vulnerability as referenced in the ALSA-2021:4321 advisory.

  - 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.
    (CVE-2021-3571)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 8 host has a package installed that is affected by a vulnerability as referenced in the ELSA-2021-4321 advisory.

  - 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.
    (CVE-2021-3571)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 8 host has a package installed that is affected by a vulnerability as referenced in the RHSA-2021:4321 advisory.

  - linuxptp: wrong length of one-step follow-up in transparent clock (CVE-2021-3571)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote CentOS Linux 8 host has a package installed that is affected by a vulnerability as referenced in the CESA-2021:4321 advisory.

  - linuxptp: wrong length of one-step follow-up in transparent clock (CVE-2021-3571)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

According to the versions of the linuxptp package installed, the EulerOS installation on the remote host is affected by the following vulnerabilities :

  - A flaw was found in the ptp4l program of the linuxptp package. A missing length check when forwarding a     PTP message between ports allows a remote attacker to cause an information leak, crash, or potentially     remote code execution. The highest threat from this vulnerability is to data confidentiality and integrity     as well as system availability. This flaw affects linuxptp versions before 3.1.1, before 2.0.1, before     1.9.3, before 1.8.1, before 1.7.1, before 1.6.1 and before 1.5.1. (CVE-2021-3570)

  - 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.
    (CVE-2021-3571)

Note that Tenable Network Security has extracted the preceding description block directly from the EulerOS security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

The version of linuxptp installed on the remote host is prior to 2.0-2. It is, therefore, affected by a vulnerability as referenced in the ALAS2-2021-1705 advisory.

  - 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.
    (CVE-2021-3571)

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

An update of the linuxptp package has been released.

ID	Name	Product	Family	Severity
191298	CentOS 9 : linuxptp-3.1.1-2.el9	Nessus	CentOS Local Security Checks	high
157801	Rocky Linux 8 : linuxptp (RLSA-2021:4321)	Nessus	Rocky Linux Local Security Checks	high
157575	AlmaLinux 8 : linuxptp (ALSA-2021:4321)	Nessus	Alma Linux Local Security Checks	high
155396	Oracle Linux 8 : linuxptp (ELSA-2021-4321)	Nessus	Oracle Linux Local Security Checks	high
155171	RHEL 8 : linuxptp (RHSA-2021:4321)	Nessus	Red Hat Local Security Checks	high
155032	CentOS 8 : linuxptp (CESA-2021:4321)	Nessus	CentOS Local Security Checks	high
153602	EulerOS 2.0 SP8 : linuxptp (EulerOS-SA-2021-2473)	Nessus	Huawei Local Security Checks	high
153425	Amazon Linux 2 : linuxptp (ALAS-2021-1705)	Nessus	Amazon Linux Local Security Checks	high
151645	Photon OS 4.0: Linuxptp PHSA-2021-4.0-0059	Nessus	PhotonOS Local Security Checks	high
151644	Photon OS 3.0: Linuxptp PHSA-2021-3.0-0265	Nessus	PhotonOS Local Security Checks	high

Detections

Analytics

CVE-2021-3571

high

Tenable Plugins

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