Trio 8500: Missing Authorization
CVE-2023-4468 is a high-severity missing authorization vulnerability in Trio 8500 from Poly, 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. There is no confirmed exploitation so far. EPSS estimates a 0.25% 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
- Check which version of Trio 8500 you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| Poly | Trio 8500 | Not specified in the record | Not stated |
| Poly | Trio 8800 | Not specified in the record | Not stated |
| Poly | Trio C60 | Not specified in the record | Not stated |
| Poly | Trio 8800 Firmware | Not specified in the record | Not stated |
| Poly | Lens | Not specified in the record | 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 | 4.3 | Medium | CNA (vuldb.com) |
| CVSS 3.1 | 7.6 | High | NVD |
| CVSS 2.0 | 4.6 | Medium | CNA (vuldb.com) |
Official description
A vulnerability was found in Poly Trio 8500, Trio 8800 and Trio C60. It has been classified as problematic. This affects an unknown part of the component Poly Lens Management Cloud Registration. The manipulation leads to missing authorization. It is possible to launch the attack on the physical device. The exploit has been disclosed to the public and may be used. The identifier VDB-249261 was assigned to this vulnerability.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Missing Authorization
The product does not perform an authorization check when an actor attempts to access a resource or perform an action.
How developers prevent this class of flaw
- Divide the product into anonymous, normal, privileged, and administrative areas. Reduce the attack surface by carefully mapping roles with data and functionality. Use role-based access control (RBAC) to enforce the roles at the appropriate boundaries. Note that this approach may not protect against horizontal authorization, i.e., it will not protect a user from attacking others with the same role.
- Ensure that access control checks are performed related to the business logic. These checks may be different than the access control checks that are applied to more generic resources such as files, connections, processes, memory, and database records. For example, a database may restrict access for medical records to a specific database user, but each record might only be intended to be accessible to the patient and the patient's doctor.
- Use a vetted library or framework that does not allow this weakness to occur or provides constructs that make this weakness easier to avoid. For example, consider using authorization frameworks such as the JAAS Authorization Framework and the OWASP ESAPI Access Control feature.
Timeline
- CVE record published.
- Record last changed materially (score, affected products, status or references).
References
Third-party and government advisories
- vuldb.com/?ctiid.249261Permissions Required, Third Party Advisory
- vuldb.com/?id.249261Third Party Advisory
- modzero.com/en/blog/multiple-vulnerabilities-in-poly-products/Third Party Advisory
Other references
Other vulnerabilities in Trio 8500
- 7.2 High severity
Recent Missing Authorization vulnerabilities
- 8.8 High severity
- 7.5 High severity
- 9.8 Critical severity
- 8.8 High severity
- 7.1 High severity
- 8.8 High severity
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