Wyse Proprietary OS (Modern ThinOS): Improper Neutralization of Special Elements used in a Command
CVE-2024-42427 is a high-severity improper neutralization of special elements used in a command vulnerability in Wyse Proprietary OS (Modern ThinOS) from Dell, with a CVSS 3.1 base score of 7.6 out of 10. It can be exploited with physical access to the device by an unauthenticated attacker, without any action from a user. Affected Wyse Proprietary OS (Modern ThinOS) versions: Dell ThinOS 2402; Dell ThinOS 2405. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 1.07% chance of exploitation within 30 days, higher than 66% of scored CVEs.
High severity with no evidence of exploitation so far.
What to do
- Check which version of Wyse Proprietary OS (Modern ThinOS) you run against the affected versions below, and install the vendor's latest release.
- Read the advisory on dell.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Dell | Wyse Proprietary OS (Modern ThinOS) | Dell ThinOS 2402; Dell ThinOS 2405 | Not stated |
| Dell | wyse_proprietary_os | 2402; 2405 | Not stated |
| Dell | Wyse Thinos | 9.5.1079; 9.5.2109 | Not stated |
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
- PhysicalThe attacker must physically touch the device.
- 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
- ChangedThe attack can reach beyond the vulnerable component into other systems.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- HighData or code can be modified at will.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 7.6 | High | CNA (emc.com) |
| CVSS 3.1 | 7.6 | High | NVD |
Official description
Dell ThinOS versions 2402 and 2405, contains an Improper Neutralization of Special Elements used in a Command ('Command Injection') vulnerability. An unauthenticated attacker with physical access could potentially exploit this vulnerability, leading to Elevation of privileges.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Neutralization of Special Elements used in a Command
The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component.
How developers prevent this class of flaw
- If at all possible, use library calls rather than external processes to recreate the desired functionality.
- If possible, ensure that all external commands called from the program are statically created.
- Run time: Run time policy enforcement may be used in an allowlist fashion to prevent use of any non-sanctioned commands.
More Improper Neutralization of Special Elements used in a Command vulnerabilities (CWE-77)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: no, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Wyse Proprietary OS (Modern ThinOS)
- 7.8 High severity
- 7.8 High severity
- 8.4 High severity
- 7.0 High severity
- 7.1 High severity
Recent Improper Neutralization of Special Elements used in a Command vulnerabilities
- 9.8 Critical severity
- 7.3 High severity
- 8.8 High severity
- 8.8 High severity
- 8.1 High severity
- 7.8 High severity
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