// For flags

CVE-2022-46174

Race condition during concurrent TLS mounts in efs-utils

Severity Score

4.2
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

efs-utils is a set of Utilities for Amazon Elastic File System (EFS). A potential race condition issue exists within the Amazon EFS mount helper in efs-utils versions v1.34.3 and below. When using TLS to mount file systems, the mount helper allocates a local port for stunnel to receive NFS connections prior to applying the TLS tunnel. In affected versions, concurrent mount operations can allocate the same local port, leading to either failed mount operations or an inappropriate mapping from an EFS customer’s local mount points to that customer’s EFS file systems. This issue is patched in version v1.34.4. There is no recommended work around. We recommend affected users update the installed version of efs-utils to v1.34.4 or later.

efs-utils es un conjunto de utilidades para Amazon Elastic File System (EFS). Existe un posible problema de condición de ejecución dentro del asistente de montaje de Amazon EFS en las versiones efs-utils v1.34.3 y anteriores. Cuando se utiliza TLS para montar sistemas de archivos, el asistente de montaje asigna un puerto local para que stunnel reciba conexiones NFS antes de aplicar el túnel TLS. En las versiones afectadas, las operaciones de montaje simultáneas pueden asignar el mismo puerto local, lo que provoca operaciones de montaje fallidas o una asignación inadecuada de los puntos de montaje locales de un cliente de EFS a los sistemas de archivos EFS de ese cliente. Este problema se solucionó en la versión v1.34.4. No se recomienda ningún workaround. Recomendamos a los usuarios afectados que actualicen la versión instalada de efs-utils a la v1.34.4 o posterior.

A potential race condition issue exists within the Amazon EFS mount helper in efs-utils and aws-efs-csi-driver when using TLS to mount file systems. The mount helper allocates a local port for stunnel to receive NFS connections prior to applying the TLS tunnel. In affected versions, concurrent mount operations can allocate the same local port, leading to either failed mount operations or an inappropriate mapping from an EFS customer’s local mount points to that customer’s EFS file systems.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
Low
Availability
Low
Attack Vector
Network
Attack Complexity
High
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2022-11-28 CVE Reserved
  • 2022-12-28 CVE Published
  • 2024-07-20 EPSS Updated
  • 2024-08-03 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-362: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Amazon
Search vendor "Amazon"
Efs-utils
Search vendor "Amazon" for product "Efs-utils"
< 1.34.4
Search vendor "Amazon" for product "Efs-utils" and version " < 1.34.4"
-
Affected
Amazon
Search vendor "Amazon"
Elastic File System Container Storage Interface Driver
Search vendor "Amazon" for product "Elastic File System Container Storage Interface Driver"
< 1.4.8
Search vendor "Amazon" for product "Elastic File System Container Storage Interface Driver" and version " < 1.4.8"
go
Affected