Race condition during concurrent TLS mounts in efs-utils
CVE-2022-46174

4.2MEDIUM

Key Information:

Vendor

Aws

Status
Efs-utils
Vendor
CVE Published:
28 December 2022

What is CVE-2022-46174?

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 Version(s)

efs-utils < v1.34.4

References

https://github.com/aws/efs-utils/security/advisories/GHSA...
x_refsource_CONFIRM
https://github.com/aws/efs-utils/issues/125
x_refsource_MISC
https://github.com/aws/efs-utils/commit/f3a8f88167d55caa2...
x_refsource_MISC

CVSS V3.1

Score:
4.2
Severity:
MEDIUM
Confidentiality:
None
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.