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CVE-2018-8935: Amd Ryzen Pro Firmware: Hard-coded credentials or backdoor
CVE-2018-8935 is rated critical with a CVSS v3.0 base score of 9.0 and NVD lists 2 affected products, including Amd Ryzen Pro Firmware. Per its scoring, it can be exploited over the network, without authentication, without any user interaction. The scored impact on confidentiality, integrity and availability is the highest available.
Vulnerability description
The Promontory chipset, as used in AMD Ryzen and Ryzen Pro platforms, has a backdoor in the ASIC, aka CHIMERA-HW.
Severity breakdown
CVSS v3.0 9.0: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
- Attack vector: Network. Exploitable remotely over the network, with no need for local or physical access.
- Attack complexity: High. Success depends on conditions outside the attacker’s control.
- Privileges required: None. No account or prior access is needed.
- User interaction: None. No action from any user is needed.
- Scope: Changed. Impact reaches beyond the vulnerable component to other resources.
- Confidentiality impact: High. Total loss of confidentiality; sensitive data can be fully disclosed.
- Integrity impact: High. Total loss of integrity; data or system state can be fully modified.
- Availability impact: High. Total loss of availability; the component can be shut down.
Affected products
- Amd Ryzen Pro Firmware: all versions listed by NVD
- Amd Ryzen Firmware: all versions listed by NVD