CVE-2022-46174

Race condition during concurrent TLS mounts in efs-utils

MEDIUM
4.2
CVSS Score
Published: December 28, 2022 at 06:46 AM UTC
Updated: June 17, 2026 at 05:11 AM UTC
3 products affected across 2 vendorsEfs UtilsElastic File System Container Storage Interface DriverEfs Utils

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Severity
MEDIUM4.2
Exploit prediction
EPSS 0.6%
SSVC
No known exploit

Description

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 1.34.4
Affected range stops below 1.34.4, so it looks safe — our inference, not a vendor statement
v < 1.4.8
Affected range stops below 1.4.8, so it looks safe — our inference, not a vendor statement
v < 1.34.4
Affected range stops below 1.34.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

4.2MEDIUMGitHub_M
Attack Vector
NETWORK
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
LOW
Availability
LOW
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-362

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