Out-of-bounds Read Affecting linuxptp package, versions <0:3.1.1-1.el8


Severity

Recommended
medium

Based on AlmaLinux security rating.

Threat Intelligence

EPSS
1.9% (77th percentile)

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  • Snyk IDSNYK-ALMALINUX8-LINUXPTP-5618376
  • published28 May 2023
  • disclosed9 Nov 2021

Introduced: 9 Nov 2021

CVE-2021-3571  (opens in a new tab)
CWE-125  (opens in a new tab)

How to fix?

Upgrade AlmaLinux:8 linuxptp to version 0:3.1.1-1.el8 or higher.
This issue was patched in ALSA-2021:4321.

NVD Description

Note: Versions mentioned in the description apply only to the upstream linuxptp package and not the linuxptp package as distributed by AlmaLinux. See How to fix? for AlmaLinux:8 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1