AMD Ryzen™ 3000 Series Desktop Processors: Insufficient Verification of Data Authenticity
CVE-2023-20576 is a high-severity insufficient verification of data authenticity vulnerability in AMD Ryzen™ 3000 Series Desktop Processors from AMD, with a CVSS 3.1 base score of 7.7 out of 10. It can be exploited with local access to the system by an unauthenticated attacker, 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 Ryzen™ 3000 Series Desktop Processors you run against the affected versions below, and install the vendor's latest release.
Affected products and versions
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
- LowNo special conditions are needed; the attack works reliably.
- Privileges required
- NoneNo account or login is needed.
- User interaction
- NoneNo action by a victim is required.
- Scope
- UnchangedImpact stays within the vulnerable component.
- Confidentiality
- HighAll data handled by the component can be read.
- Integrity
- NoneNothing can be modified.
- Availability
- HighThe component can be taken down completely.
Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H. Scored by CNA (amd.com).
Official description
Insufficient Verification of Data Authenticity in AGESA™ may allow an attacker to update SPI ROM data potentially resulting in denial of service or privilege escalation.
Source: the CVE record as published by its numbering authority, via NVD and CVE.org.
The underlying weakness: Insufficient Verification of Data Authenticity
The product does not sufficiently verify the origin or authenticity of data, in a way that causes it to accept invalid data.
More Insufficient Verification of Data Authenticity vulnerabilities (CWE-345)
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
Our coverage
Other vulnerabilities in AMD Ryzen™ 3000 Series Desktop Processors
- 8.4 High severity
- 7.4 High severity
- 7.0 High severity
- 8.6 High severity
- 8.5 High severity
- 7.5 High severity
Recent Insufficient Verification of Data Authenticity vulnerabilities
- 8.1 High severity
- 9.8 Critical severity
- 9.4 Critical severity
- 8.3 High severity
- 7.6 High severity
- 9.8 Critical severity
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