Race condition during concurrent TLS mounts in efs-utils
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- High
- Impact type
- —
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Partial Red Hat: 1 fixed, 1 without a fix
Attack profile from CVSS 3.1 · CNA. Fix status from CNA, GitHub and Red Hat.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AWS | efs-utils | before v1.34.4 | v1.34.4 | Patch available | CNA |
| — | github.com/kubernetes-sigs/aws-efs-csi-driver (Go) | before 1.4.8 | 1.4.8 | Patch available | GHSA-4fv8-w65m-3932 |
- efs-utils VendorAWS Affected before v1.34.4 Fixed in v1.34.4 Patch available CNA
- github.com/kubernetes-sigs/aws-efs-csi-driver (Go) Vendor— Affected before 1.4.8 Fixed in 1.4.8 Patch available GHSA-4fv8-w65m-3932
Remediation
- Fix · CNA efs-utils (aws) Fixed in v1.34.4
- Fix · GHSA-4fv8-w65m-3932 github.com/kubernetes-sigs/aws-efs-csi-driver (Go) Fixed in 1.4.8 Advisory →
Red Hat 1 advisory
- RHSA-2023:0450 Released 2023-01-30 · Red Hat rating ModerateOpenShift Container Platform 4.12.1 security update
- Red Hat OpenShift Container Platform 4.12 openshift4/ose-aws-efs-csi-driver-container-rhel8
Vendor assessments
Red Hat
Red Hat rating: Moderate. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat OpenShift Container Platform 4 | Affected | No fix yet |
| Red Hat OpenShift Container Platform 4.12 | Fixed | RHSA-2023:0450 |
Not affected: 1 product
- Red Hat OpenShift Container Platform 4.12
Timeline
- 2026-10-02 Threatist record created from CVE-2022-46174
- 2026-10-03 Alias added: GHSA-4fv8-w65m-3932
- 2026-10-28 EPSS moved to the 50th–90th percentile
References
Sources
- CVE-2022-46174 · CVE Program
- CVE-2022-46174 · NVD
- FIRST EPSS
- GHSA-4fv8-w65m-3932 · GitHub Advisory Database · CC BY 4.0
- CVE-2022-46174 · Red Hat security data · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences