AMD Ryzen™ 8000 Series Desktop Processors: Improper Isolation of Shared Resources on System-on-a-Chip (SoC)
CVE-2023-31325 is a high-severity improper isolation of shared resources on system-on-a-chip (soc) vulnerability in AMD Ryzen™ 8000 Series Desktop Processors 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 0.14% 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 Ryzen™ 8000 Series Desktop Processors 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 Ryzen™ 8000 Series Desktop Processors | Not specified in the record | Not stated |
| AMD | AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics | Not specified in the record | Not stated |
| AMD | AMD Radeon™ RX 7000 Series Graphics Products | Not specified in the record | Not stated |
| AMD | AMD Radeon™ PRO W7000 Series Graphics Products | 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
Improper isolation of shared resources on System-on-a-chip (SOC) could a privileged attacker to tamper with the contents of the PSP reserved DRAM region potentially resulting in loss of confidentiality and integrity.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Improper Isolation of Shared Resources on System-on-a-Chip (SoC)
The System-On-a-Chip (SoC) does not properly isolate shared resources between trusted and untrusted agents.
How developers prevent this class of flaw
- When sharing resources, avoid mixing agents of varying trust levels. Untrusted agents should not share resources with trusted agents.
More Improper Isolation of Shared Resources on System-on-a-Chip (SoC) vulnerabilities (CWE-1189)
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 Ryzen™ 8000 Series Desktop Processors
- 8.6 High severity
- 8.5 High severity
- 7.5 High severity
- 8.3 High severity
- 8.7 High severity
- 8.8 High severity
Recent Improper Isolation of Shared Resources on System-on-a-Chip (SoC) vulnerabilities
- 7.8 High severity
- 7.8 High severity
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