CVE-2021-3571

mediumPriorität · verfolgen · 29EPSS 0.019 · 80. PerzentilDEEURUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.90% (80th) EPSS
CVSS 5.5 · medium
Is it mine?
39 products
Prüfe deine Angriffsfläche
Who says so?
5 sources
cnnvd · enisa_euvd · fstec_bdu · cert_bund

EPSS · bewertet 2026-10-27

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.

01

Behebungen

Hersteller-Fix, Mitigation oder Workaround, wie von den Quellen veröffentlicht.

Ein Hersteller-Fix ist verfügbar.

  • Behobenlinuxptp-0:3.1.1-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-0:3.1.1-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-0:3.1.1-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-0:3.1.1-1.el8.src as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-0:3.1.1-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-debuginfo-0:3.1.1-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-debuginfo-0:3.1.1-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-debuginfo-0:3.1.1-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-debuginfo-0:3.1.1-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-debugsource-0:3.1.1-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-debugsource-0:3.1.1-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-debugsource-0:3.1.1-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Behobenlinuxptp-debugsource-0:3.1.1-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-2021:4321
  • Workaroundlinuxptp-0:3.1.1-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.src as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.s390x as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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-0:3.1.1-1.el8.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 8)redhat_csaf

    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 ```

02

cvss

Technischer Schweregrad, 0–10. Eine Zeile je Quelle.

7.1
010

Basiswert 0–10 · höher = schwerwiegender · Vektor überfahren zum Auflösen⚠ Quellen uneinig · medium–high · 5.5–7.1

v2.05.5mediumAV:N/AC:L/Au:S/C:P/I:N/A:Pprimary · NVD / NIST USAusnutzbarkeit 8 · Auswirkung 4.9
v3.17.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Hprimary · NVD / NIST USAusnutzbarkeit 2.8 · Auswirkung 4.2
v3.17.1highAV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Hsecondary · FSTEC (BDU) RU
v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H/E:Usecondary · CVSS-BT (t0sche)
v3.17.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:Hsecondary · Red Hat Product Security US
03

schwächen

Die CWE-Schwächeklassen, zu denen dies gehört.

CWE-125USprimärCWE-119USCWE-119USCWE-119US
04

betroffene Produkte (39)

Betroffene Produkte und Versionsbereiche.

20 von 39 angezeigt
05

Advisories (2)

Hersteller- und Ökosystem-Meldungen dazu.

  • RHSA-2021:4321Red Hat Security Advisory: linuxptp security, bug fix, and enhancement update2021-11-09csaf · redhat_csafUS

    An update for linuxptp is now available for Red Hat Enterprise Linux 8. Red Hat Product Security has rated this update as having a security impact of Moderate. 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.

  • WID-SEC-W-2022-0571Red Hat Enterprise Linux: Mehrere SchwachstellenDeutsch2021-11-09csaf · cert_bundDE

    Ein entfernter, anonymer, authentisierter oder lokaler Angreifer kann mehrere Schwachstellen in Red Hat Enterprise Linux ausnutzen, um einen Cross-Site-Scripting-Angriff durchzuführen, vertrauliche Informationen offenzulegen, einen Denial-of-Service-Zustand herbeizuführen, Sicherheitsmaßnahmen zu umgehen, beliebigen Code auszuführen, Dateien zu manipulieren und einen nicht spezifizierten Angriff durchzuführen.

06

auch bekannt als (4)

Weitere Namen und Kennungen dieser Entität.

07

quellen

Welche Quellen diesen Datensatz belegen und wann.

cnnvdenisa_euvdfstec_bducert_bundredhat_csafNVDCVE.orgMITRE
veröffentlicht 2021-07-09geändert 2026-06-17
09

Referenzen (15)

Externe Belege — Patches, Meldungen, Analysen.

scry

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