CVE-2021-3571

2021-07-0500:00:00

ubuntu.com

ptp4l

linuxptp

information leak

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%

JSON

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.