// For flags

CVE-2021-3571

linuxptp: wrong length of one-step follow-up in transparent clock

Severity Score

7.1
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

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.

Se ha encontrado un fallo en el programa ptp4l del paquete linuxptp. Cuando ptp4l está operando en una arquitectura little-endian como transparent clock PTP, un atacante remoto podría enviar un mensaje de sincronización de un paso diseñado para causar un filtrado de información o un bloqueo. La mayor amenaza de esta vulnerabilidad es la confidencialidad de los datos y la disponibilidad del sistema. Este fallo afecta a versiones de linuxptp anteriores a 3.1.1 y anteriores a 2.0.1

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.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Authentication
Single
Confidentiality
Partial
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-05-31 CVE Reserved
  • 2021-07-09 CVE Published
  • 2024-02-27 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-119: Improper Restriction of Operations within the Bounds of a Memory Buffer
  • CWE-125: Out-of-bounds Read
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Linuxptp Project
Search vendor "Linuxptp Project"
 Linuxptp
Search vendor "Linuxptp Project" for product "Linuxptp"
 < 2.0.1
Search vendor "Linuxptp Project" for product "Linuxptp" and version " < 2.0.1"
-
Affected
Linuxptp Project
Search vendor "Linuxptp Project"
 Linuxptp
Search vendor "Linuxptp Project" for product "Linuxptp"
 >= 3.0 < 3.1.1
Search vendor "Linuxptp Project" for product "Linuxptp" and version " >= 3.0 < 3.1.1"
-
Affected
Redhat
Search vendor "Redhat"
 Enterprise Linux
Search vendor "Redhat" for product "Enterprise Linux"
 8.0
Search vendor "Redhat" for product "Enterprise Linux" and version "8.0"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 33
Search vendor "Fedoraproject" for product "Fedora" and version "33"
-
Affected
Fedoraproject
Search vendor "Fedoraproject"
 Fedora
Search vendor "Fedoraproject" for product "Fedora"
 34
Search vendor "Fedoraproject" for product "Fedora" and version "34"
-
Affected