CVE-2018-8935 - Vulnerability Details - OpenCVE

Description

The Promontory chipset, as used in AMD Ryzen and Ryzen Pro platforms, has a backdoor in the ASIC, aka CHIMERA-HW.

Published: 2018-03-22

Score: 9.0 Critical

EPSS: < 1% Very Low

KEV: No

Impact:

Action:

Analysis

Analysis and contextual insights are available on OpenCVE Cloud.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

n/a

n/a

affected

Version	Status	Constraints
`n/a`	affected	—

Configuration 1 [-]

AND

cpe:2.3:o:amd:ryzen_pro_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:amd:ryzen_pro:-:*:*:*:*:*:*:*

Configuration 2 [-]

AND

cpe:2.3:o:amd:ryzen_firmware:-:*:*:*:*:*:*:*

cpe:2.3:h:amd:ryzen:-:*:*:*:*:*:*:*

No data.

No data available yet.

Remediation

No vendor fix or workaround currently provided.

Additional remediation guidance may be available on OpenCVE Cloud.

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2018-20543	The Promontory chipset, as used in AMD Ryzen and Ryzen Pro platforms, has a backdoor in the ASIC, aka CHIMERA-HW.

No CVSS v4.0

No CVSS v3.1

Attack Vector Network

Attack Complexity High

Privileges Required None

Scope Changed

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Medium

Authentication None

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

The EPSS score is 0.00573.

Key SSVC decision points have not yet been added.

References

Link	Providers
https://amdflaws.com/
https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/
https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research
https://safefirmware.com/amdflaws_whitepaper.pdf

History

No history.

Subscriptions

Amd Ryzen Ryzen Firmware Ryzen Pro Ryzen Pro Firmware

MITRE

Status: PUBLISHED

Assigner: mitre

Published: 2018-03-22T14:00:00.000Z

Updated: 2024-08-05T07:10:46.625Z

Reserved: 2018-03-22T00:00:00.000Z

Link: CVE-2018-8935

Vulnrichment

No data.

NVD

Status : Modified

Published: 2018-03-22T14:29:00.940

Modified: 2024-11-21T04:14:38.377

Link: CVE-2018-8935

Redhat

No data.

OpenCVE Enrichment

No data.

Weaknesses

NVD-CWE-noinfo

{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "datePublic": "2018-03-22T00:00:00.000Z", "descriptions": [{"lang": "en", "value": "The Promontory chipset, as used in AMD Ryzen and Ryzen Pro platforms, has a backdoor in the ASIC, aka CHIMERA-HW."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2018-03-22T14:57:01.000Z", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://amdflaws.com/"}, {"tags": ["x_refsource_MISC"], "url": "https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/"}, {"tags": ["x_refsource_MISC"], "url": "https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research"}, {"tags": ["x_refsource_MISC"], "url": "https://safefirmware.com/amdflaws_whitepaper.pdf"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2018-8935", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "The Promontory chipset, as used in AMD Ryzen and Ryzen Pro platforms, has a backdoor in the ASIC, aka CHIMERA-HW."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://amdflaws.com/", "refsource": "MISC", "url": "https://amdflaws.com/"}, {"name": "https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/", "refsource": "MISC", "url": "https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/"}, {"name": "https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research", "refsource": "MISC", "url": "https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research"}, {"name": "https://safefirmware.com/amdflaws_whitepaper.pdf", "refsource": "MISC", "url": "https://safefirmware.com/amdflaws_whitepaper.pdf"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-05T07:10:46.625Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://amdflaws.com/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://safefirmware.com/amdflaws_whitepaper.pdf"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2018-8935", "datePublished": "2018-03-22T14:00:00.000Z", "dateReserved": "2018-03-22T00:00:00.000Z", "dateUpdated": "2024-08-05T07:10:46.625Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:amd:ryzen_pro_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "08E59D0B-FB2F-4C17-B9BC-462DFB366777", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:amd:ryzen_pro:-:*:*:*:*:*:*:*", "matchCriteriaId": "BA9541F0-5B33-4F09-B201-E887DA572571", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:amd:ryzen_firmware:-:*:*:*:*:*:*:*", "matchCriteriaId": "CAEA5209-C0F6-4645-A541-A68CBC70695B", "vulnerable": true}], "negate": false, "operator": "OR"}, {"cpeMatch": [{"criteria": "cpe:2.3:h:amd:ryzen:-:*:*:*:*:*:*:*", "matchCriteriaId": "047F0F4D-DCE1-4E3F-A888-39E894DF857D", "vulnerable": false}], "negate": false, "operator": "OR"}], "operator": "AND"}], "descriptions": [{"lang": "en", "value": "The Promontory chipset, as used in AMD Ryzen and Ryzen Pro platforms, has a backdoor in the ASIC, aka CHIMERA-HW."}, {"lang": "es", "value": "El chipset Promontory, tal y como se utiliza en plataformas AMD Ryzen y Ryzen Pro, tiene una puerta trasera en el ASIC. Esto tambi\u00e9n se conoce como CHIMERA-FW."}], "id": "CVE-2018-8935", "lastModified": "2024-11-21T04:14:38.377", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "HIGH", "cvssData": {"accessComplexity": "MEDIUM", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "COMPLETE", "baseScore": 9.3, "confidentialityImpact": "COMPLETE", "integrityImpact": "COMPLETE", "vectorString": "AV:N/AC:M/Au:N/C:C/I:C/A:C", "version": "2.0"}, "exploitabilityScore": 8.6, "impactScore": 10.0, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV30": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.0, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H", "version": "3.0"}, "exploitabilityScore": 2.2, "impactScore": 6.0, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2018-03-22T14:29:00.940", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://amdflaws.com/"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/"}, {"source": "cve@mitre.org", "tags": ["Vendor Advisory"], "url": "https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://safefirmware.com/amdflaws_whitepaper.pdf"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://amdflaws.com/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://blog.trailofbits.com/2018/03/15/amd-flaws-technical-summary/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Vendor Advisory"], "url": "https://community.amd.com/community/amd-corporate/blog/2018/03/21/initial-amd-technical-assessment-of-cts-labs-research"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://safefirmware.com/amdflaws_whitepaper.pdf"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "NVD-CWE-noinfo"}], "source": "nvd@nist.gov", "type": "Primary"}]}