certfr_avis - CERTFR-2025-AVI-0902

CERTFR-2025-AVI-0902

Vulnerability from certfr_avis - Published: 2025-10-22 - Updated: 2025-10-22

De multiples vulnérabilités ont été découvertes dans Xen. Certaines d'entre elles permettent à un attaquant de provoquer une élévation de privilèges, une atteinte à la confidentialité des données et un déni de service.

Solutions

Se référer au bulletin de sécurité de l'éditeur pour l'obtention des correctifs (cf. section Documentation).

Impacted products

	Vendor	Product	Description
	XEN	Xen	Xen versions 4.20.x sans les correctifs xsa475-1.patch et xsa475-2.patch
	XEN	Xen	Xen versions 4.17.x, 4.18.x et 4.19.x sans les correctifs xsa475-4.19-1.patch et xsa475-4.19-2.patch

References

Title

Publication Time

Tags

Bulletin de sécurité Xen xsa/advisory-475

2025-10-21

vendor-advisory

Show details on source website

JSON

To clipboard

{
  "$ref": "https://www.cert.ssi.gouv.fr/openapi.json",
  "affected_systems": [
    {
      "description": "Xen versions 4.20.x sans les correctifs xsa475-1.patch et xsa475-2.patch",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    },
    {
      "description": "Xen versions 4.17.x, 4.18.x et 4.19.x sans les correctifs xsa475-4.19-1.patch et xsa475-4.19-2.patch",
      "product": {
        "name": "Xen",
        "vendor": {
          "name": "XEN",
          "scada": false
        }
      }
    }
  ],
  "affected_systems_content": "",
  "content": "## Solutions\n\nSe r\u00e9f\u00e9rer au bulletin de s\u00e9curit\u00e9 de l\u0027\u00e9diteur pour l\u0027obtention des correctifs (cf. section Documentation).",
  "cves": [
    {
      "name": "CVE-2025-58147",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-58147"
    },
    {
      "name": "CVE-2025-58148",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-58148"
    }
  ],
  "initial_release_date": "2025-10-22T00:00:00",
  "last_revision_date": "2025-10-22T00:00:00",
  "links": [],
  "reference": "CERTFR-2025-AVI-0902",
  "revisions": [
    {
      "description": "Version initiale",
      "revision_date": "2025-10-22T00:00:00.000000"
    }
  ],
  "risks": [
    {
      "description": "D\u00e9ni de service"
    },
    {
      "description": "Atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es"
    },
    {
      "description": "\u00c9l\u00e9vation de privil\u00e8ges"
    }
  ],
  "summary": "De multiples vuln\u00e9rabilit\u00e9s ont \u00e9t\u00e9 d\u00e9couvertes dans Xen. Certaines d\u0027entre elles permettent \u00e0 un attaquant de provoquer une \u00e9l\u00e9vation de privil\u00e8ges, une atteinte \u00e0 la confidentialit\u00e9 des donn\u00e9es et un d\u00e9ni de service.",
  "title": "Multiples vuln\u00e9rabilit\u00e9s dans Xen",
  "vendor_advisories": [
    {
      "published_at": "2025-10-21",
      "title": "Bulletin de s\u00e9curit\u00e9 Xen xsa/advisory-475",
      "url": "https://xenbits.xen.org/xsa/advisory-475.html"
    }
  ]
}

CVE-2025-58148 (GCVE-0-2025-58148)

Vulnerability from cvelistv5 – Published: 2025-10-31 11:50 – Updated: 2025-11-04 21:13

Summary

[This CNA information record relates to multiple CVEs; the text explains which aspects/vulnerabilities correspond to which CVE.] Some Viridian hypercalls can specify a mask of vCPU IDs as an input, in one of three formats. Xen has boundary checking bugs with all three formats, which can cause out-of-bounds reads and writes while processing the inputs. * CVE-2025-58147. Hypercalls using the HV_VP_SET Sparse format can cause vpmask_set() to write out of bounds when converting the bitmap to Xen's format. * CVE-2025-58148. Hypercalls using any input format can cause send_ipi() to read d->vcpu[] out-of-bounds, and operate on a wild vCPU pointer.

Severity ?

7.5 (High)


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

CWE

CWE-125 - Out-of-bounds Read
CWE-787 - Out-of-bounds Write

Assigner

XEN

References

URL

Tags

https://xenbits.xenproject.org/xsa/advisory-475.html

Impacted products

	Vendor	Product	Version
	Xen	Xen	Unknown: consult Xen advisory XSA-475

Credits

This issue was discovered by Teddy Astie of Vates

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-58148",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-11-03T14:25:18.838278Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          },
          {
            "descriptions": [
              {
                "cweId": "CWE-787",
                "description": "CWE-787 Out-of-bounds Write",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-11-03T14:25:21.434Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T21:13:30.190Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://xenbits.xen.org/xsa/advisory-475.html"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/10/21/1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Xen",
          "vendor": "Xen",
          "versions": [
            {
              "status": "unknown",
              "version": "consult Xen advisory XSA-475"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "Xen versions 4.15 and newer are vulnerable.  Versions 4.14 and older are\nnot vulnerable.\n\nOnly x86 HVM guests which have Viridian enabled can leverage the\nvulnerability.\n\nWith the `xl` toolstack, this means any `viridian=` setting in the VM\u0027s\nconfiguration file.\n\nNote - despite:\n\n  `viridian=[\"!hcall_remote_tlb_flush\", \"!hcall_ipi\", \"!ex_processor_masks\"]`\n\nbeing documented to turns off the relevant functionality, this\nconfiguration does not block the relevant hypercalls."
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "This issue was discovered by Teddy Astie of Vates"
        }
      ],
      "datePublic": "2025-10-21T11:59:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nSome Viridian hypercalls can specify a mask of vCPU IDs as an input, in\none of three formats.  Xen has boundary checking bugs with all three\nformats, which can cause out-of-bounds reads and writes while processing\nthe inputs.\n\n * CVE-2025-58147.  Hypercalls using the HV_VP_SET Sparse format can\n   cause vpmask_set() to write out of bounds when converting the bitmap\n   to Xen\u0027s format.\n\n * CVE-2025-58148.  Hypercalls using any input format can cause\n   send_ipi() to read d-\u003evcpu[] out-of-bounds, and operate on a wild\n   vCPU pointer."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "A buggy or malicious guest can cause Denial of Service (DoS) affecting\nthe entire host, information leaks, or elevation of privilege."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-31T11:50:28.407Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "url": "https://xenbits.xenproject.org/xsa/advisory-475.html"
        }
      ],
      "title": "x86: Incorrect input sanitisation in Viridian hypercalls",
      "workarounds": [
        {
          "lang": "en",
          "value": "Not enabling Viridian will avoid the issuse."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2025-58148",
    "datePublished": "2025-10-31T11:50:28.407Z",
    "dateReserved": "2025-08-26T06:48:41.443Z",
    "dateUpdated": "2025-11-04T21:13:30.190Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2025-58147 (GCVE-0-2025-58147)

Vulnerability from cvelistv5 – Published: 2025-10-31 11:50 – Updated: 2025-11-04 21:13

Summary

Severity ?

7.5 (High)


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

CWE

CWE-125 - Out-of-bounds Read

Assigner

XEN

References

URL

Tags

https://xenbits.xenproject.org/xsa/advisory-475.html

Impacted products

	Vendor	Product	Version
	Xen	Xen	Unknown: consult Xen advisory XSA-475

Credits

This issue was discovered by Teddy Astie of Vates

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 7.5,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2025-58147",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-10-31T17:45:24.503747Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-125",
                "description": "CWE-125 Out-of-bounds Read",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-31T17:45:58.124Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "providerMetadata": {
          "dateUpdated": "2025-11-04T21:13:28.853Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://xenbits.xen.org/xsa/advisory-475.html"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2025/10/21/1"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Xen",
          "vendor": "Xen",
          "versions": [
            {
              "status": "unknown",
              "version": "consult Xen advisory XSA-475"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "Xen versions 4.15 and newer are vulnerable.  Versions 4.14 and older are\nnot vulnerable.\n\nOnly x86 HVM guests which have Viridian enabled can leverage the\nvulnerability.\n\nWith the `xl` toolstack, this means any `viridian=` setting in the VM\u0027s\nconfiguration file.\n\nNote - despite:\n\n  `viridian=[\"!hcall_remote_tlb_flush\", \"!hcall_ipi\", \"!ex_processor_masks\"]`\n\nbeing documented to turns off the relevant functionality, this\nconfiguration does not block the relevant hypercalls."
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "This issue was discovered by Teddy Astie of Vates"
        }
      ],
      "datePublic": "2025-10-21T11:59:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "[This CNA information record relates to multiple CVEs; the\ntext explains which aspects/vulnerabilities correspond to which CVE.]\n\nSome Viridian hypercalls can specify a mask of vCPU IDs as an input, in\none of three formats.  Xen has boundary checking bugs with all three\nformats, which can cause out-of-bounds reads and writes while processing\nthe inputs.\n\n * CVE-2025-58147.  Hypercalls using the HV_VP_SET Sparse format can\n   cause vpmask_set() to write out of bounds when converting the bitmap\n   to Xen\u0027s format.\n\n * CVE-2025-58148.  Hypercalls using any input format can cause\n   send_ipi() to read d-\u003evcpu[] out-of-bounds, and operate on a wild\n   vCPU pointer."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "A buggy or malicious guest can cause Denial of Service (DoS) affecting\nthe entire host, information leaks, or elevation of privilege."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2025-10-31T11:50:28.282Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "url": "https://xenbits.xenproject.org/xsa/advisory-475.html"
        }
      ],
      "title": "x86: Incorrect input sanitisation in Viridian hypercalls",
      "workarounds": [
        {
          "lang": "en",
          "value": "Not enabling Viridian will avoid the issuse."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2025-58147",
    "datePublished": "2025-10-31T11:50:28.282Z",
    "dateReserved": "2025-08-26T06:48:41.443Z",
    "dateUpdated": "2025-11-04T21:13:28.853Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Tags

Taxonomy of the tags.

All sightings related to this event Export sightings related to this event

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

CERTFR-2025-AVI-0902

Solutions

CVE-2025-58148 (GCVE-0-2025-58148)

CVE-2025-58147 (GCVE-0-2025-58147)

Tags

Sightings

Nomenclature