CVE-2023-31315 — Improper validation in a model specific register (MSR) could allow a malicious p

Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access to modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.

01What is this vulnerability?

Improper validation in a model specific register (MSR) could allow a malicious program with ring0 access to modify SMM configuration while SMI lock is enabled, potentially leading to arbitrary code execution.

02Affected products

Vendor	Product	Versions
AMD	3rd Gen AMD EPYC™ Processors	various
AMD	1st Gen AMD EPYC™ Processors	various
AMD	2nd Gen AMD EPYC™ Processors	various
AMD	4th Gen AMD EPYC™ Processors	various
AMD	AMD EPYC™ Embedded 3000	various
AMD	AMD EPYC™ Embedded 7002	various
AMD	AMD EPYC™ Embedded 7003	various
AMD	AMD EPYC™ Embedded 9003	various
AMD	AMD Ryzen™ Embedded R1000	various
AMD	AMD Ryzen™ Embedded R2000	various
AMD	AMD Ryzen™ Embedded 5000	various
AMD	AMD Ryzen™ Embedded 7000	various
AMD	AMD Ryzen™ Embedded V1000	various
AMD	AMD Ryzen™ Embedded V2000	various
AMD	AMD Ryzen™ Embedded V3000	various
AMD	AMD Ryzen™ 3000 Series Desktop Processors	various
AMD	AMD Ryzen™ 5000 Series Desktop Processors	various
AMD	AMD Ryzen™ 5000 Series Desktop processor with Radeon™ Graphics	various
AMD	AMD Ryzen™ 7000 Series Desktop Processors	various
AMD	AMD Ryzen™ 4000 Series Desktop Processors with Radeon™ Graphics	various
AMD	AMD Ryzen™ Threadripper™ 3000 Series Processors	various
AMD	AMD Ryzen™ Threadripper™ PRO Processors	various, various
AMD	AMD Ryzen™ Threadripper™ PRO 3000WX Series Processors	various
AMD	AMD Athlon™ 3000 Series Mobile Processors with Radeon™ Graphics	various, various
AMD	AMD Ryzen™ 3000 Series Mobile Processor with Radeon™ Graphics	various
AMD	AMD Ryzen™ 4000 Series Mobile Processors with Radeon™ Graphics	various
AMD	AMD Ryzen™ 5000 Series Mobile Processors with Radeon™ Graphics	various
AMD	AMD Ryzen™ 7030 Series Mobile Processors with Radeon™ Graphics	various
AMD	AMD Ryzen™ 7040 Series Mobile Processors with Radeon™ Graphics	various
AMD	AMD Ryzen™ 7045 Series Mobile Processors	various
AMD	AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics	various
AMD	AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics	various
AMD	AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics	various
AMD	AMD Ryzen™ 8000 Series Processors with Radeon™ Graphics	various

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-08-09T17:08:24.237Z
• Last modified: 2024-09-12T12:56:32.250Z

09References

• www.amd.com — https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7014.html