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redhatRedHatRHSA-2021:4321
HistoryNov 09, 2021 - 9:00 a.m.

(RHSA-2021:4321) Moderate: linuxptp security, bug fix, and enhancement update

2021-11-0909:00:47
access.redhat.com
17
linuxptp package
precision time protocol
cve-2021-3571
red hat enterprise linux 8.5
security update

CVSS2

5.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:N/A:P

CVSS3

7.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

EPSS

0.003

Percentile

69.3%

The linuxptp packages provide Precision Time Protocol (PTP) implementation for Linux according to IEEE standard 1588 for Linux. The dual design goals are to provide a robust implementation of the standard and to use the most relevant and modern Application Programming Interfaces (API) offered by the Linux kernel.

The following packages have been upgraded to a later upstream version: linuxptp (3.1.1). (BZ#1895005)

Security Fix(es):

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

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 8.5 Release Notes linked from the References section.

CVSS2

5.5

Attack Vector

NETWORK

Attack Complexity

LOW

Authentication

SINGLE

Confidentiality Impact

PARTIAL

Integrity Impact

NONE

Availability Impact

PARTIAL

AV:N/AC:L/Au:S/C:P/I:N/A:P

CVSS3

7.1

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

LOW

Integrity Impact

NONE

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:H

EPSS

0.003

Percentile

69.3%