AMD Instinct™ MI210: Unintended Proxy or Intermediary
CVE-2023-31313 is a high-severity unintended proxy or intermediary vulnerability in AMD Instinct™ MI210 from AMD, with a CVSS 3.1 base score of 7.2 out of 10. It can be exploited with local access to the system by an attacker with administrator privileges, without any action from a user. There is no confirmed exploitation so far. EPSS estimates a 0.12% 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 AMD Instinct™ MI210 you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
| Vendor | Product | Affected versions | Fixed in |
|---|---|---|---|
| AMD | AMD Instinct™ MI210 | Not specified in the record | Not stated |
| AMD | AMD Instinct™ MI250 | 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
- LocalThe attacker needs local access or must trick a user into running something.
- Attack complexity
- HighSuccess depends on conditions outside the attacker's control.
- Privileges required
- HighAdministrator-level access is required first.
- 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
- NoneAvailability is not affected.
Vector: CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:N. Scored by CNA (amd.com).
Official description
An unintended proxy or intermediary in the AMD power management firmware (PMFW) could allow a privileged attacker to send malformed messages to the system management unit (SMU) potentially resulting in arbitrary code execution.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Unintended Proxy or Intermediary
The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere.
How developers prevent this class of flaw
- Enforce the use of strong mutual authentication mechanism between the two parties.
- Whenever a product is an intermediary or proxy for transactions between two other components, the proxy core should not drop the identity of the initiator of the transaction. The immutability of the identity of the initiator must be maintained and should be forwarded all the way to the target.
More Unintended Proxy or Intermediary vulnerabilities (CWE-441)
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 references
Other vulnerabilities in AMD Instinct™ MI210
- 7.7 High severity
- 9.2 Critical severity
- 8.8 High severity
- 7.1 High severity
- 8.4 High severity
- 7.8 High severity
Recent Unintended Proxy or Intermediary vulnerabilities
- 9.3 Critical severity
- 8.1 High severity
- 9.4 Critical severity
- 9.8 Critical severity
- 8.7 High severity
- 7.8 High severity
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