Vulnerability-Lookup

GHSA-745H-3GVR-9MC6

Vulnerability from github – Published: 2022-08-11 00:00 – Updated: 2022-08-20 00:00

Details

Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed “Zen 1”, “Zen 2” and “Zen 3” that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.

Severity

7.5 (High)


                  
                    CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

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  "affected": [],
  "aliases": [
    "CVE-2021-46778"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-203"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-08-10T20:15:00Z",
    "severity": "HIGH"
  },
  "details": "Execution unit scheduler contention may lead to a side channel vulnerability found on AMD CPU microarchitectures codenamed \u201cZen 1\u201d, \u201cZen 2\u201d and \u201cZen 3\u201d that use simultaneous multithreading (SMT). By measuring the contention level on scheduler queues an attacker may potentially leak sensitive information.",
  "id": "GHSA-745h-3gvr-9mc6",
  "modified": "2022-08-20T00:00:46Z",
  "published": "2022-08-11T00:00:16Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46778"
    },
    {
      "type": "WEB",
      "url": "https://www.amd.com/en/corporate/product-security/bulletin/amd-sb-1039"
    }
  ],
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  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2021-46778 (GCVE-0-2021-46778)

Vulnerability from cvelistv5 – Published: 2022-08-09 20:20 – Updated: 2024-09-17 00:36

Summary

Severity

No CVSS data available.

CWE

Assigner

AMD

References

1 reference

URL	Tags
https://www.amd.com/en/corporate/product-security…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
AMD	AMD Processors	Affected: Processor Some AMD Processors

Date Public

2022-08-09 00:00

Show details on NVD website

JSON

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-745H-3GVR-9MC6

CVE-2021-46778 (GCVE-0-2021-46778)

Tags

Sightings

Nomenclature