csaf_certbund - wid-sec-w-2025-2404

WID-SEC-W-2025-2404

Vulnerability from csaf_certbund - Published: 2025-10-23 22:00 - Updated: 2025-12-08 23:00

Summary

AMD “Zen 5” Prozessoren: Schwachstelle gefährdet Vertraulichkeit und Integrität

Notes

Das BSI ist als Anbieter für die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch dafür verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgfältig im Einzelfall zu prüfen.

Produktbeschreibung

Prozessoren sind die zentralen Rechenwerke eines Computers. Lenovo ist ein Hersteller u. a. von Computern.

Angriff

Ein lokaler Angreifer kann eine Schwachstelle in AMD “Zen 5” Prozessoren ausnutzen, um die Vertraulichkeit und die Integrität zu gefährden.

Betroffene Betriebssysteme

- BIOS/Firmware

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "mittel"
    },
    "category": "csaf_base",
    "csaf_version": "2.0",
    "distribution": {
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "de-DE",
    "notes": [
      {
        "category": "legal_disclaimer",
        "text": "Das BSI ist als Anbieter f\u00fcr die eigenen, zur Nutzung bereitgestellten Inhalte nach den allgemeinen Gesetzen verantwortlich. Nutzerinnen und Nutzer sind jedoch daf\u00fcr verantwortlich, die Verwendung und/oder die Umsetzung der mit den Inhalten bereitgestellten Informationen sorgf\u00e4ltig im Einzelfall zu pr\u00fcfen."
      },
      {
        "category": "description",
        "text": "Prozessoren sind die zentralen Rechenwerke eines Computers.\r\nLenovo ist ein Hersteller u. a. von Computern.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann eine Schwachstelle in AMD \u201cZen 5\u201d Prozessoren ausnutzen, um die Vertraulichkeit und die Integrit\u00e4t zu gef\u00e4hrden.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- BIOS/Firmware",
        "title": "Betroffene Betriebssysteme"
      }
    ],
    "publisher": {
      "category": "other",
      "contact_details": "csaf-provider@cert-bund.de",
      "name": "Bundesamt f\u00fcr Sicherheit in der Informationstechnik",
      "namespace": "https://www.bsi.bund.de"
    },
    "references": [
      {
        "category": "self",
        "summary": "WID-SEC-W-2025-2404 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2025/wid-sec-w-2025-2404.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2025-2404 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2025-2404"
      },
      {
        "category": "external",
        "summary": "AMD Security Bulletin vom 2025-10-23",
        "url": "https://www.amd.com/en/resources/product-security/bulletin/amd-sb-7055.html"
      },
      {
        "category": "external",
        "summary": "Lenovo Security Advisory vom 2025-10-23",
        "url": "https://support.lenovo.com/us/en/product_security/LEN-208435"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2025-25745 vom 2025-11-07",
        "url": "https://oss.oracle.com/pipermail/el-errata/2025-November/018949.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2025-25744 vom 2025-11-06",
        "url": "https://linux.oracle.com/errata/ELSA-2025-25744.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2025-25743 vom 2025-11-07",
        "url": "https://linux.oracle.com/errata/ELSA-2025-25743.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2025-25742 vom 2025-11-07",
        "url": "https://linux.oracle.com/errata/ELSA-2025-25742.html"
      },
      {
        "category": "external",
        "summary": "Oracle Linux Security Advisory ELSA-2025-25742 vom 2025-11-07",
        "url": "http://linux.oracle.com/errata/ELSA-2025-25742.html"
      },
      {
        "category": "external",
        "summary": "Amazon Linux Security Advisory ALAS2-2025-3092 vom 2025-12-08",
        "url": "https://alas.aws.amazon.com/AL2/ALAS2-2025-3092.html"
      }
    ],
    "source_lang": "en-US",
    "title": "AMD \u201cZen 5\u201d Prozessoren: Schwachstelle gef\u00e4hrdet Vertraulichkeit und Integrit\u00e4t",
    "tracking": {
      "current_release_date": "2025-12-08T23:00:00.000+00:00",
      "generator": {
        "date": "2025-12-09T08:26:18.369+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.5.0"
        }
      },
      "id": "WID-SEC-W-2025-2404",
      "initial_release_date": "2025-10-23T22:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2025-10-23T22:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2025-10-26T23:00:00.000+00:00",
          "number": "2",
          "summary": "CVSSv3.1 korrigiert"
        },
        {
          "date": "2025-11-06T23:00:00.000+00:00",
          "number": "3",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2025-11-09T23:00:00.000+00:00",
          "number": "4",
          "summary": "Neue Updates von Oracle Linux aufgenommen"
        },
        {
          "date": "2025-11-23T23:00:00.000+00:00",
          "number": "5",
          "summary": "Referenz(en) aufgenommen: EUVD-2025-198505"
        },
        {
          "date": "2025-12-08T23:00:00.000+00:00",
          "number": "6",
          "summary": "Neue Updates von Amazon aufgenommen"
        }
      ],
      "status": "final",
      "version": "6"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version",
                "name": "EPYC",
                "product": {
                  "name": "AMD Prozessor EPYC",
                  "product_id": "T036859",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:amd:amd_processor:epyc"
                  }
                }
              },
              {
                "category": "product_version",
                "name": "Ryzen",
                "product": {
                  "name": "AMD Prozessor Ryzen",
                  "product_id": "T044474",
                  "product_identification_helper": {
                    "cpe": "cpe:/h:amd:amd_processor:ryzen"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Prozessor"
          }
        ],
        "category": "vendor",
        "name": "AMD"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Amazon Linux 2",
            "product": {
              "name": "Amazon Linux 2",
              "product_id": "398363",
              "product_identification_helper": {
                "cpe": "cpe:/o:amazon:linux_2:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Amazon"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Lenovo Computer",
            "product": {
              "name": "Lenovo Computer",
              "product_id": "T036869",
              "product_identification_helper": {
                "cpe": "cpe:/h:lenovo:computer:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Lenovo"
      },
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Oracle Linux",
            "product": {
              "name": "Oracle Linux",
              "product_id": "T004914",
              "product_identification_helper": {
                "cpe": "cpe:/o:oracle:linux:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Oracle"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-62626",
      "product_status": {
        "known_affected": [
          "T036869",
          "T036859",
          "398363",
          "T004914",
          "T044474"
        ]
      },
      "release_date": "2025-10-23T22:00:00.000+00:00",
      "title": "CVE-2025-62626"
    }
  ]
}

CVE-2025-62626 (GCVE-0-2025-62626)

Vulnerability from cvelistv5 – Published: 2025-11-21 18:52 – Updated: 2025-11-23 16:49

Summary

Improper handling of insufficient entropy in the AMD CPUs could allow a local attacker to influence the values returned by the RDSEED instruction, potentially resulting in the consumption of insufficiently random values.

Severity ?

7.2 (High)


                        
                          CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CWE

CWE-333 - Improper Handling of Insufficient Entropy in TRNG

Assigner

AMD

References

URL

Tags

https://www.amd.com/en/resources/product-security…

Impacted products

Vendor

Product

Version

AMD

AMD Ryzen™ 9000HX Series Processors

Unaffected: FireRangeFL1PI 1.0.0.0e

AMD

AMD EPYC™ 9005 Series Processors

Unaffected: Turin C1 : 0x0B00215A Turin Dense / B0: 0x0B101054

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-62626",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-21T00:00:00+00:00",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-22T04:55:22.865Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "affected",
          "product": "AMD Ryzen\u2122 9000HX Series Processors",
          "vendor": "AMD",
          "versions": [
            {
              "status": "unaffected",
              "version": "FireRangeFL1PI 1.0.0.0e"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "AMD EPYC\u2122 9005 Series Processors",
          "vendor": "AMD",
          "versions": [
            {
              "status": "unaffected",
              "version": "Turin C1 : 0x0B00215A Turin Dense / B0: 0x0B101054"
            }
          ]
        }
      ],
      "datePublic": "2025-11-21T18:56:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "Improper handling of insufficient entropy in the AMD CPUs could allow a local attacker to influence the values returned by the RDSEED instruction, potentially resulting in the consumption of insufficiently random values.\u003cbr\u003e"
            }
          ],
          "value": "Improper handling of insufficient entropy in the AMD CPUs could allow a local attacker to influence the values returned by the RDSEED instruction, potentially resulting in the consumption of insufficiently random values."
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "Automatable": "NOT_DEFINED",
            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "PRESENT",
            "attackVector": "LOCAL",
            "baseScore": 7.2,
            "baseSeverity": "HIGH",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "NONE",
            "vulnConfidentialityImpact": "HIGH",
            "vulnIntegrityImpact": "HIGH",
            "vulnerabilityResponseEffort": "NOT_DEFINED"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-333",
              "description": "CWE-333  Improper Handling of Insufficient Entropy in TRNG",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-11-23T16:49:35.748Z",
        "orgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
        "shortName": "AMD"
      },
      "references": [
        {
          "url": "https://www.amd.com/en/resources/product-security/bulletin/AMD-SB-7055.html"
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "AMD PSIRT Automation 1.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "b58fc414-a1e4-4f92-9d70-1add41838648",
    "assignerShortName": "AMD",
    "cveId": "CVE-2025-62626",
    "datePublished": "2025-11-21T18:52:57.206Z",
    "dateReserved": "2025-10-16T20:46:13.455Z",
    "dateUpdated": "2025-11-23T16:49:35.748Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date

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

WID-SEC-W-2025-2404

CVE-2025-62626 (GCVE-0-2025-62626)

Tags

Sightings

Nomenclature