Dell Encryption: Improper Access Control
CVE-2023-32479 is a high-severity improper access control vulnerability in Dell Encryption from Dell, with a CVSS 3.1 base score of 7.8 out of 10. It can be exploited with local access to the system by an attacker with a low-privileged account, without any action from a user. The record lists version 11.9.0 as the first without the flaw, so updating Dell Encryption to that release or later removes the exposure. There is no confirmed exploitation so far. EPSS estimates a 0.09% 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 Dell Encryption to 11.9.0 or a later version.
- Update Dell Endpoint Security Suite Enterprise to 11.9.0 or a later version.
- Update Dell Security Management Server (Windows) to 11.9.0 or a later version.
- Read the advisory on dell.com for workarounds and exact fixed builds.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Dell | Dell Encryption | before 11.9.0 | 11.9.0 |
| Dell | Dell Endpoint Security Suite Enterprise | before 11.9.0 | 11.9.0 |
| Dell | Dell Security Management Server (Windows) | before 11.9.0 | 11.9.0 |
| Dell | security_management_server | before 11.9.0 | 11.9.0 |
| Dell | endpoint_security_suite_enterprise | before 11.9.0 | 11.9.0 |
| Dell | encryption | before 11.9.0 | 11.9.0 |
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
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- LowA basic user account is enough.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- 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:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 6.7 | Medium | CNA (emc.com) |
| CVSS 3.1 | 7.8 | High | NVD |
Official description
Dell Encryption, Dell Endpoint Security Suite Enterprise, and Dell Security Management Server versions prior to 11.9.0 contain privilege escalation vulnerability due to improper ACL of the non-default installation directory. A local malicious user could potentially exploit this vulnerability by replacing binaries in installed directory and taking reverse shell of the system leading to Privilege Escalation.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Access Control
The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.
How developers prevent this class of flaw
- Very carefully manage the setting, management, and handling of privileges. Explicitly manage trust zones in the software.
- Compartmentalize the system to have safe areas where trust boundaries can be unambiguously drawn. Do not allow sensitive data to go outside of the trust boundary and always be careful when interfacing with a compartment outside of the safe area. Ensure that appropriate compartmentalization is built into the system design, and the compartmentalization allows for and reinforces privilege separation functionality. Architects and designers should rely on the principle of least privilege to decide the appropriate time to use privileges and the time to drop privileges.
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 Dell Encryption
- 7.3 High severity
Recent Improper Access Control vulnerabilities
- 7.5 High severity
- 8.8 High severity
- 9.8 Critical severity
- 8.8 High severity
- 9.8 Critical severity
- 9.8 Critical severity
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