My Cloud Home and My Cloud Home Duo: Uncontrolled Resource Consumption
CVE-2022-36329 is a high-severity uncontrolled resource consumption vulnerability in My Cloud Home and My Cloud Home Duo from Western Digital, with a CVSS 3.1 base score of 7.5 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. The record lists version 9.4.0-191 as the first without the flaw, so updating My Cloud Home and My Cloud Home Duo to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.3% chance of exploitation within 30 days, which is low compared with other CVEs.
High severity with no evidence of exploitation so far.
What to do
- Update My Cloud Home and My Cloud Home Duo to 9.4.0-191 or a later version.
- Update ibi to 9.4.0-191 or a later version.
- Update My Cloud Home Firmware to 9.4.0-191 or a later version.
- Read the advisory on westerndigital.com for workarounds and exact fixed builds.
- Until you can update, restrict network access to the affected service so it is not reachable from untrusted networks.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Western Digital | My Cloud Home and My Cloud Home Duo | before 9.4.0-191 | 9.4.0-191 |
| SanDisk | ibi | before 9.4.0-191 | 9.4.0-191 |
| Westerndigital | My Cloud Home Firmware | before 9.4.0-191 | 9.4.0-191 |
| Westerndigital | My Cloud Home Duo Firmware | before 9.4.0-191 | 9.4.0-191 |
| Westerndigital | Sandisk Ibi Firmware | before 9.4.0-191 | 9.4.0-191 |
Version data comes from the organisation that assigned the CVE. Confirm against the vendor advisory before deciding you are unaffected.
How the severity score breaks down
- Attack vector
- NetworkCan be exploited remotely over a network, including the internet.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- NoneNo data is disclosed.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 4.4 | Medium | CNA (wdc.com) |
| CVSS 3.1 | 7.5 | High | NVD |
Official description
An improper privilege management issue that could allow an attacker to cause a denial of service over the OTA mechanism was discovered in Western Digital My Cloud Home, My Cloud Home Duo and SanDisk ibi devices.This issue affects My Cloud Home and My Cloud Home Duo: before 9.4.0-191; ibi: before 9.4.0-191.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Uncontrolled Resource Consumption
The product does not properly control the allocation and maintenance of a limited resource.
How developers prevent this class of flaw
- Ensure that protocols have specific limits of scale placed on them.
- Ensure that all failures in resource allocation place the system into a safe posture.
More Uncontrolled Resource Consumption vulnerabilities (CWE-400)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: partial).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in My Cloud Home and My Cloud Home Duo
- 7.5 High severity
- 9.8 Critical severity
- 8.1 High severity
Recent Uncontrolled Resource Consumption vulnerabilities
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
- 7.5 High severity
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