CVE-2023-20578
7.5
CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H
Summary
A TOCTOU (Time-Of-Check-Time-Of-Use) in SMM may allow an attacker with ring0 privileges and access to the BIOS menu or UEFI shell to modify the communications buffer potentially resulting in arbitrary code execution.
Affected Software
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| AMD | AMD EPYC™ 7001 Processors | NaplesPI 1.0.0.K | unaffected |
| AMD | AMD EPYC™ 7002 Processors | RomePI 1.0.0.G | unaffected |
| AMD | AMD EPYC™ 7003 Processors | MilanPI 1.0.0.B | unaffected |
| AMD | AMD EPYC™ 9004 Processors | GenoaPI 1.0.0.2 | unaffected |
| AMD | AMD Ryzen™ 7000 Series Desktop Processors | ComboAM5 1.0.0.1 | unaffected |
| AMD | AMD Ryzen™ Threadripper™ PRO 5000WX Processors | ChagallWSPI-sWRX8 1.0.0.7 | unaffected |
| AMD | AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics | MendocinoPI-FT6 1.0.0.0 | unaffected |
| AMD | AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics | RembrandtPI-FP7 1.0.0.9b | unaffected |
| AMD | AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics | RembrandtPI-FP7 1.0.0.9b | unaffected |
| AMD | AMD EPYC™ Embedded 3000 | SnowyOwl PI 1.1.0.A | unaffected |
| AMD | AMD EPYC™ Embedded 7002 | EmbRomePI-SP3 1.0.0.A | unaffected |
| AMD | AMD EPYC™ Embedded 7003 | EmbMilanPI-SP3 1.0.0.7 | unaffected |
| AMD | AMD EPYC™ Embedded 9003 | EmbGenoaPI-SP5 1.0.0.0 | unaffected |
| AMD | AMD Ryzen™ Embedded 7000 | EmbeddedAM5PI 1.0.0.0 | unaffected |
| AMD | AMD RyzenTM Embedded V3000 | EmbeddedPI-FP7r2 1.0.0.8 | unaffected |
Weaknesses
ADP Enrichment
CISA ADP Vulnrichment
- SSVC:
- Exploitation: none
- Automatable: no
- Technical Impact: total
References
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