Vulnerability-Lookup

GHSA-4RGQ-6973-6XXH

Vulnerability from github – Published: 2024-12-19 12:32 – Updated: 2024-12-31 21:30

Details

PVH guests have their ACPI tables constructed by the toolstack. The construction involves building the tables in local memory, which are then copied into guest memory. While actually used parts of the local memory are filled in correctly, excess space that is being allocated is left with its prior contents.

Severity

5.5 (Medium)


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

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JSON

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{
  "affected": [],
  "aliases": [
    "CVE-2024-45819"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-276"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-12-19T12:15:16Z",
    "severity": "MODERATE"
  },
  "details": "PVH guests have their ACPI tables constructed by the toolstack.  The\nconstruction involves building the tables in local memory, which are\nthen copied into guest memory.  While actually used parts of the local\nmemory are filled in correctly, excess space that is being allocated is\nleft with its prior contents.",
  "id": "GHSA-4rgq-6973-6xxh",
  "modified": "2024-12-31T21:30:45Z",
  "published": "2024-12-19T12:32:40Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2024-45819"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-464.html"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/11/12/1"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/11/12/10"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2024/11/12/7"
    },
    {
      "type": "WEB",
      "url": "http://xenbits.xen.org/xsa/advisory-464.html"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2024-45819 (GCVE-0-2024-45819)

Vulnerability from cvelistv5 – Published: 2024-12-19 12:00 – Updated: 2024-12-31 18:57

Title

libxl leaks data to PVH guests via ACPI tables

Summary

Severity

5.5 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-12-31 18:56 UTC

CWE

CWE-276 - Incorrect Default Permissions

Assigner

XEN CNA under the mitre root

CNA scorecard D 56/100 over 46 records in the last 180 days details

References

5 references

URL	Tags
https://xenbits.xenproject.org/xsa/advisory-464.html
http://www.openwall.com/lists/oss-security/2024/11/12/1
http://xenbits.xen.org/xsa/advisory-464.html
http://www.openwall.com/lists/oss-security/2024/1…
http://www.openwall.com/lists/oss-security/2024/11/12/7

Impacted products

1 product

Vendor	Product	Version
Xen	Xen	Unknown: consult Xen advisory XSA-464

Date Public

2024-11-12 12:00

Credits

This issue was discovered by Jason Andryuk of AMD.

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-12-19T12:04:50.065Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "url": "http://www.openwall.com/lists/oss-security/2024/11/12/1"
          },
          {
            "url": "http://xenbits.xen.org/xsa/advisory-464.html"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2024/11/12/10"
          },
          {
            "url": "http://www.openwall.com/lists/oss-security/2024/11/12/7"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 5.5,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "NONE",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2024-45819",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-12-31T18:56:31.915960Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "cweId": "CWE-276",
                "description": "CWE-276 Incorrect Default Permissions",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-12-31T18:57:41.513Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Xen",
          "vendor": "Xen",
          "versions": [
            {
              "status": "unknown",
              "version": "consult Xen advisory XSA-464"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "Xen versions 4.8 and onwards are vulnerable.  Xen 4.7 and older are not\nvulnerable.\n\nOnly x86 systems running PVH guests are vulnerable.  Architectures other\nthan x86 are not vulnerable.\n\nOnly PVH guests can leverage the vulnerability.  HVM and PV guests\ncannot leverage the vulnerability.  Note that PV guests when run inside\nthe (PVH) shim can\u0027t leverage the vulnerability."
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "This issue was discovered by Jason Andryuk of AMD."
        }
      ],
      "datePublic": "2024-11-12T12:00:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "PVH guests have their ACPI tables constructed by the toolstack.  The\nconstruction involves building the tables in local memory, which are\nthen copied into guest memory.  While actually used parts of the local\nmemory are filled in correctly, excess space that is being allocated is\nleft with its prior contents."
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "An unprivileged guest may be able to access sensitive information\npertaining to the host, control domain, or other guests."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-12-19T12:00:50.271Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "url": "https://xenbits.xenproject.org/xsa/advisory-464.html"
        }
      ],
      "title": "libxl leaks data to PVH guests via ACPI tables",
      "workarounds": [
        {
          "lang": "en",
          "value": "Running only PV or HVM guests will avoid this vulnerability."
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2024-45819",
    "datePublished": "2024-12-19T12:00:50.271Z",
    "dateReserved": "2024-09-09T14:43:11.826Z",
    "dateUpdated": "2024-12-31T18:57:41.513Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

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.

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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.
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