RHSA-2021:2657

csafUSredhat_csaf

Red Hat Security Advisory: linuxptp security update

view advisory published 2021-07-06

An update for linuxptp is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

01

describes (1)

Related CVEs.

IDseverity exploitable
CVE-2021-3570UShigh8.8—
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 l…
02

references

External citations — patches, advisories, analysis.

03

remediations (26)

  • Fixedlinuxptp-0:2.0-4.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-0:2.0-4.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-0:2.0-4.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-0:2.0-4.el8_2.1.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-0:2.0-4.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-debuginfo-0:2.0-4.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-debuginfo-0:2.0-4.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-debuginfo-0:2.0-4.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-debuginfo-0:2.0-4.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-debugsource-0:2.0-4.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-debugsource-0:2.0-4.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-debugsource-0:2.0-4.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Fixedlinuxptp-debugsource-0:2.0-4.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258

    https://access.redhat.com/errata/RHSA-2021:2657
  • Workaroundlinuxptp-0:2.0-4.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-0:2.0-4.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-0:2.0-4.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-0:2.0-4.el8_2.1.src as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-0:2.0-4.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-debuginfo-0:2.0-4.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-debuginfo-0:2.0-4.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-debuginfo-0:2.0-4.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-debuginfo-0:2.0-4.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-debugsource-0:2.0-4.el8_2.1.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-debugsource-0:2.0-4.el8_2.1.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-debugsource-0:2.0-4.el8_2.1.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

  • Workaroundlinuxptp-debugsource-0:2.0-4.el8_2.1.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v. 8.2)

    Only attackers that can connect to the `ptp4l` service can exploit this vulnerability. If `ptp4l` is bound only to a private network interface, or is protected by firewall rules to block incoming PTP management messages, the attack surface is correspondingly limited. When using the UDP IPv4 or IPv6 network transport, the following tcpdump filter can be used to detect PTP management messages: ``` (port 319 or port 320) and udp[8]&0xf=0xd ```

scry

Advisories like this name the exposed products attackers go after on your perimeter. See what is exposed on your perimeter with a free passive scan.

Free scan