CVE-2023-20578
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
- Published
- Last modified
- Where the record stands: published, rejected by its publisher, or superseded by another id.What do these mean? →
- published
- Whether CISA lists it in its Known Exploited Vulnerabilities catalog: proof that attackers are using it.What do these mean? →
- Not listed in CISA KEV
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
CISA's decision points: whether it is exploited, whether attacks can be automated, and how much control an attacker gets. Assessed (SSVC 2.0.3).What do these mean? →
- Exploitation: none
- Automatable: no
- Technical impact: total
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.
Timeline
- CVE published
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: total
- Record last updated
Affected versions
- PI
Version range not reported
- AMD AMD EPYC™ 7002 Processors
Version range not reported
- AMD AMD EPYC™ 7003 Processors
Version range not reported
- AMD AMD EPYC™ 9004 Processors
Version range not reported
- AMD AMD Ryzen™ 7000 Series Desktop Processors
Version range not reported
- AMD AMD Ryzen™ Threadripper™ PRO 5000WX Processors
Version range not reported
- AMD AMD Ryzen™ 7020 Series Processors with Radeon™ Graphics
Version range not reported
- AMD AMD Ryzen™ 6000 Series Processors with Radeon™ Graphics
Version range not reported
- AMD AMD Ryzen™ 7035 Series Processors with Radeon™ Graphics
Version range not reported
- AMD AMD EPYC™ Embedded 3000
Version range not reported
- AMD AMD EPYC™ Embedded 7002
Version range not reported
- AMD AMD EPYC™ Embedded 7003
Version range not reported
- AMD AMD EPYC™ Embedded 9003
Version range not reported
- AMD AMD Ryzen™ Embedded 7000
Version range not reported
- AMD AMD RyzenTM Embedded V3000
Version range not reported