Dell SmartFabric OS10: Improper Restriction of Communication Channel to Intended Endpoints
CVE-2023-28078 is a critical-severity improper restriction of communication channel to intended endpoints vulnerability in Dell SmartFabric OS10 from Dell, with a CVSS 3.1 base score of 9.1 out of 10. It can be exploited remotely over the network by an unauthenticated attacker, without any action from a user. Affected Dell SmartFabric OS10 versions: 10.5.5.0; 10.5.5.3; 10.5.5.1 (MX), and others listed below. The record does not name a fixed version, so check the vendor advisory. There is no confirmed exploitation so far. EPSS estimates a 0.89% chance of exploitation within 30 days, higher than 60% of scored CVEs.
Critical severity: a successful attack would have severe impact.
What to do
- Update smartfabric_os10 to 10.5.5.0 or a later version.
- Read the advisory on dell.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 |
|---|---|---|---|
| Dell | Dell SmartFabric OS10 | 10.5.5.0; 10.5.5.3; 10.5.5.1 (MX); 10.5.5.2 (MX); 10.5.4.x; 10.5.4.6 (MX); 10.5.3.x; 10.5.2.x | Not stated |
| Dell | smartfabric_os10 | 10.5.5.0; 10.5.5.3; 10.5.5.1\(mx\); 10.5.5.2\(mx\); 10.5.2.0 up to, but not including, 10.5.5.0; 10.5.4.6\(mx\) | 10.5.5.0 |
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
- 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
- HighAll data handled by the component can be read.
- 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:H/I:N/A:H. Scored by NVD.
| Scoring system | Score | Severity | Scored by |
|---|---|---|---|
| CVSS 3.1 | 9.1 | Critical | CNA (emc.com) |
| CVSS 3.1 | 9.1 | Critical | NVD |
Official description
Dell OS10 Networking Switches running 10.5.2.x and above contain a vulnerability with zeroMQ when VLT is configured. A remote unauthenticated attacker could potentially exploit this vulnerability leading to information disclosure and a possible Denial of Service when a huge number of requests are sent to the switch. This is a high severity vulnerability as it allows an attacker to view sensitive data. Dell recommends customers to upgrade at the earliest opportunity.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Restriction of Communication Channel to Intended Endpoints
The product establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.
More Improper Restriction of Communication Channel to Intended Endpoints vulnerabilities (CWE-923)
Timeline
- CVE record published.
- CISA published its SSVC assessment (exploitation: none, automatable: yes, technical impact: total).
- Record last changed materially (score, affected products, status or references).
References
Other vulnerabilities in Dell SmartFabric OS10
- 9.8 Critical severity
Recent Improper Restriction of Communication Channel to Intended Endpoints vulnerabilities
- 7.2 High severity
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