Vulnerability-Lookup

CVE-2024-33580 (GCVE-0-2024-33580)

Vulnerability from cvelistv5 – Published: 2024-10-11 15:17 – Updated: 2024-10-11 16:36

Summary

A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.

Severity

7.8 (High)


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

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-10-11 16:35 UTC

CWE

CWE-427 - Uncontrolled Search Path Element

Assigner

lenovo mitre root

References

1 reference

URL	Tags
https://iknow.lenovo.com.cn/detail/423563

Impacted products

2 products

Vendor	Product	Version	CPE status
Lenovo	Personal Cloud	Affected: 0 , < 2.3.0 (custom)	guessed
lenovo	personal_cloud	Affected: 0 , < 2.3.0 (custom) cpe:2.3:a:lenovo:personal_cloud::::::::

Credits

Lenovo thanks ggid7788 for reporting this issue.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "affected": [
          {
            "cpes": [
              "cpe:2.3:a:lenovo:personal_cloud:*:*:*:*:*:*:*:*"
            ],
            "defaultStatus": "unknown",
            "product": "personal_cloud",
            "vendor": "lenovo",
            "versions": [
              {
                "lessThan": "2.3.0",
                "status": "affected",
                "version": "0",
                "versionType": "custom"
              }
            ]
          }
        ],
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2024-33580",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-10-11T16:35:25.455554Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-10-11T16:36:51.589Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Personal Cloud",
          "vendor": "Lenovo",
          "versions": [
            {
              "lessThan": "2.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Lenovo thanks ggid7788 for reporting this issue."
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eA DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.\u003c/span\u003e"
            }
          ],
          "value": "A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-427",
              "description": "CWE-427 Uncontrolled Search Path Element",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-10-11T15:17:03.670Z",
        "orgId": "da227ddf-6e25-4b41-b023-0f976dcaca4b",
        "shortName": "lenovo"
      },
      "references": [
        {
          "url": "https://iknow.lenovo.com.cn/detail/423563"
        }
      ],
      "solutions": [
        {
          "lang": "en",
          "supportingMedia": [
            {
              "base64": false,
              "type": "text/html",
              "value": "\u003cspan style=\"background-color: rgb(255, 255, 255);\"\u003eUpdate Lenovo Personal Cloud to version 2.3.0 or later. \u003c/span\u003e\n\n\u003cbr\u003e"
            }
          ],
          "value": "Update Lenovo Personal Cloud to version 2.3.0 or later."
        }
      ],
      "source": {
        "discovery": "UNKNOWN"
      },
      "x_generator": {
        "engine": "Vulnogram 0.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "da227ddf-6e25-4b41-b023-0f976dcaca4b",
    "assignerShortName": "lenovo",
    "cveId": "CVE-2024-33580",
    "datePublished": "2024-10-11T15:17:03.670Z",
    "dateReserved": "2024-04-24T13:34:19.755Z",
    "dateUpdated": "2024-10-11T16:36:51.589Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2024-33580",
      "date": "2026-09-17",
      "epss": "0.00182",
      "percentile": "0.08031"
    },
    "fkie_nvd": {
      "descriptions": "[{\"lang\": \"en\", \"value\": \"A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.\"}, {\"lang\": \"es\", \"value\": \"Se inform\\u00f3 de una vulnerabilidad de secuestro de DLL en Lenovo Personal Cloud que podr\\u00eda permitir que un atacante local ejecute c\\u00f3digo con privilegios elevados.\"}]",
      "id": "CVE-2024-33580",
      "lastModified": "2024-10-15T12:58:51.050",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"psirt@lenovo.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}]}",
      "published": "2024-10-11T16:15:05.730",
      "references": "[{\"url\": \"https://iknow.lenovo.com.cn/detail/423563\", \"source\": \"psirt@lenovo.com\"}]",
      "sourceIdentifier": "psirt@lenovo.com",
      "vulnStatus": "Awaiting Analysis",
      "weaknesses": "[{\"source\": \"psirt@lenovo.com\", \"type\": \"Secondary\", \"description\": [{\"lang\": \"en\", \"value\": \"CWE-427\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2024-33580\",\"sourceIdentifier\":\"psirt@lenovo.com\",\"published\":\"2024-10-11T16:15:05.730\",\"lastModified\":\"2026-06-17T07:32:01.657\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.\"},{\"lang\":\"es\",\"value\":\"Se inform\u00f3 de una vulnerabilidad de secuestro de DLL en Lenovo Personal Cloud que podr\u00eda permitir que un atacante local ejecute c\u00f3digo con privilegios elevados.\"}],\"affected\":[{\"source\":\"psirt@lenovo.com\",\"affectedData\":[{\"vendor\":\"Lenovo\",\"product\":\"Personal Cloud\",\"defaultStatus\":\"unaffected\",\"versions\":[{\"version\":\"0\",\"lessThan\":\"2.3.0\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]},{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"affectedData\":[{\"vendor\":\"lenovo\",\"product\":\"personal_cloud\",\"defaultStatus\":\"unknown\",\"cpes\":[\"cpe:2.3:a:lenovo:personal_cloud:*:*:*:*:*:*:*:*\"],\"versions\":[{\"version\":\"0\",\"lessThan\":\"2.3.0\",\"versionType\":\"custom\",\"status\":\"affected\"}]}]}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"psirt@lenovo.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"ssvcV203\":[{\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"ssvcData\":{\"timestamp\":\"2024-10-11T16:35:25.455554Z\",\"id\":\"CVE-2024-33580\",\"options\":[{\"exploitation\":\"none\"},{\"automatable\":\"no\"},{\"technicalImpact\":\"total\"}],\"role\":\"CISA Coordinator\",\"version\":\"2.0.3\"}}]},\"weaknesses\":[{\"source\":\"psirt@lenovo.com\",\"type\":\"Secondary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-427\"}]}],\"references\":[{\"url\":\"https://iknow.lenovo.com.cn/detail/423563\",\"source\":\"psirt@lenovo.com\"}]}}",
    "redhat_vex": {
      "current_release_date": "2025-05-28T21:30:21+00:00",
      "cve": "CVE-2024-33580",
      "id": "CVE-2024-33580",
      "initial_release_date": "2024-01-01T00:00:00+00:00",
      "product_status:known_not_affected": "1",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "CVE-2024-33580",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2024/cve-2024-33580.json",
      "version": "3"
    },
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2024-33580\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-10-11T16:35:25.455554Z\"}}}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:lenovo:personal_cloud:*:*:*:*:*:*:*:*\"], \"vendor\": \"lenovo\", \"product\": \"personal_cloud\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"2.3.0\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unknown\"}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2024-10-11T16:36:42.900Z\"}}], \"cna\": {\"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"finder\", \"value\": \"Lenovo thanks ggid7788 for reporting this issue.\"}], \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.8, \"attackVector\": \"LOCAL\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"integrityImpact\": \"HIGH\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"LOW\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"LOW\", \"confidentialityImpact\": \"HIGH\"}, \"scenarios\": [{\"lang\": \"en\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"vendor\": \"Lenovo\", \"product\": \"Personal Cloud\", \"versions\": [{\"status\": \"affected\", \"version\": \"0\", \"lessThan\": \"2.3.0\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unaffected\"}], \"solutions\": [{\"lang\": \"en\", \"value\": \"Update Lenovo Personal Cloud to version 2.3.0 or later.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eUpdate Lenovo Personal Cloud to version 2.3.0 or later. \u003c/span\u003e\\n\\n\u003cbr\u003e\", \"base64\": false}]}], \"references\": [{\"url\": \"https://iknow.lenovo.com.cn/detail/423563\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.2.0\"}, \"descriptions\": [{\"lang\": \"en\", \"value\": \"A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"\u003cspan style=\\\"background-color: rgb(255, 255, 255);\\\"\u003eA DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.\u003c/span\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-427\", \"description\": \"CWE-427 Uncontrolled Search Path Element\"}]}], \"providerMetadata\": {\"orgId\": \"da227ddf-6e25-4b41-b023-0f976dcaca4b\", \"shortName\": \"lenovo\", \"dateUpdated\": \"2024-10-11T15:17:03.670Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2024-33580\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2024-10-11T16:36:51.589Z\", \"dateReserved\": \"2024-04-24T13:34:19.755Z\", \"assignerOrgId\": \"da227ddf-6e25-4b41-b023-0f976dcaca4b\", \"datePublished\": \"2024-10-11T15:17:03.670Z\", \"assignerShortName\": \"lenovo\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}

FKIE_CVE-2024-33580

Vulnerability from fkie_nvd - Published: 2024-10-11 16:15 - Updated: 2026-06-17 07:32

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.

References

	URL	Tags
	psirt@lenovo.com	https://iknow.lenovo.com.cn/detail/423563

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Personal Cloud",
          "vendor": "Lenovo",
          "versions": [
            {
              "lessThan": "2.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "psirt@lenovo.com"
    },
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:lenovo:personal_cloud:*:*:*:*:*:*:*:*"
          ],
          "defaultStatus": "unknown",
          "product": "personal_cloud",
          "vendor": "lenovo",
          "versions": [
            {
              "lessThan": "2.3.0",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges."
    },
    {
      "lang": "es",
      "value": "Se inform\u00f3 de una vulnerabilidad de secuestro de DLL en Lenovo Personal Cloud que podr\u00eda permitir que un atacante local ejecute c\u00f3digo con privilegios elevados."
    }
  ],
  "id": "CVE-2024-33580",
  "lastModified": "2026-06-17T07:32:01.657",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "psirt@lenovo.com",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2024-33580",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-10-11T16:35:25.455554Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2024-10-11T16:15:05.730",
  "references": [
    {
      "source": "psirt@lenovo.com",
      "url": "https://iknow.lenovo.com.cn/detail/423563"
    }
  ],
  "sourceIdentifier": "psirt@lenovo.com",
  "vulnStatus": "Deferred",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-427"
        }
      ],
      "source": "psirt@lenovo.com",
      "type": "Secondary"
    }
  ]
}

GHSA-WWJ3-RXV4-C69V

Vulnerability from github – Published: 2024-10-11 18:32 – Updated: 2024-10-11 18:32

Details

A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.

Severity

7.8 (High)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2024-33580"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-427"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-10-11T16:15:05Z",
    "severity": "HIGH"
  },
  "details": "A DLL hijack vulnerability was reported in Lenovo Personal Cloud that could allow a local attacker to execute code with elevated privileges.",
  "id": "GHSA-wwj3-rxv4-c69v",
  "modified": "2024-10-11T18:32:48Z",
  "published": "2024-10-11T18:32:48Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-33580"
    },
    {
      "type": "WEB",
      "url": "https://iknow.lenovo.com.cn/detail/423563"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ]
}

GSD-2024-33580

Vulnerability from gsd - Updated: 2024-04-25 05:02

Details

** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided.

Aliases

CVE-2024-33580

JSON

To clipboard

{
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2024-33580"
      ],
      "id": "GSD-2024-33580",
      "modified": "2024-04-25T05:02:10.684958Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "cve@mitre.org",
        "ID": "CVE-2024-33580",
        "STATE": "RESERVED"
      },
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
          }
        ]
      }
    }
  }
}

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CVE-2024-33580 (GCVE-0-2024-33580)

FKIE_CVE-2024-33580

GHSA-WWJ3-RXV4-C69V

GSD-2024-33580

Tags

Sightings

Nomenclature

Related by attack behaviour