GSD-2023-46840

Vulnerability from gsd - Updated: 2023-12-13 01:20
Details
Incorrect placement of a preprocessor directive in source code results in logic that doesn't operate as intended when support for HVM guests is compiled out of Xen.
Aliases
Aliases
CVE-2023-46840
To clipboard 

{
  "GSD": {
    "alias": "CVE-2023-46840",
    "id": "GSD-2023-46840"
  },
  "gsd": {
    "metadata": {
      "exploitCode": "unknown",
      "remediation": "unknown",
      "reportConfidence": "confirmed",
      "type": "vulnerability"
    },
    "osvSchema": {
      "aliases": [
        "CVE-2023-46840"
      ],
      "details": "Incorrect placement of a preprocessor directive in source code results\nin logic that doesn\u0027t operate as intended when support for HVM guests is\ncompiled out of Xen.\n",
      "id": "GSD-2023-46840",
      "modified": "2023-12-13T01:20:52.989447Z",
      "schema_version": "1.4.0"
    }
  },
  "namespaces": {
    "cve.org": {
      "CVE_data_meta": {
        "ASSIGNER": "security@xen.org",
        "ID": "CVE-2023-46840",
        "STATE": "PUBLIC"
      },
      "affects": {
        "vendor": {
          "vendor_data": [
            {
              "product": {
                "product_data": [
                  {
                    "product_name": "Xen",
                    "version": {
                      "version_data": [
                        {
                          "version_value": "not down converted",
                          "x_cve_json_5_version_data": {
                            "defaultStatus": "unknown",
                            "versions": [
                              {
                                "status": "unknown",
                                "version": "consult Xen advisory XSA-450"
                              }
                            ]
                          }
                        }
                      ]
                    }
                  }
                ]
              },
              "vendor_name": "Xen"
            }
          ]
        }
      },
      "configuration": [
        {
          "lang": "en",
          "value": "Xen 4.17 and onwards are vulnerable.  Xen 4.16 and older are not\nvulnerable.\n\nOnly Xen running on x86 platforms with an Intel-compatible VT-d IOMMU is\nvulnerable.  Platforms from other manufacturers, or platforms without a\nVT-d IOMMU are not vulnerable.\n\nOnly systems where PCI devices are passed through to untrusted or\nsemi-trusted guests are vulnerable.  Systems which do not assign PCI\ndevices to untrusted guests are not vulnerable.\n\nXen is only vulnerable when CONFIG_HVM is disabled at build time.  Most\ndeployments of Xen are expected to have CONFIG_HVM enabled at build\ntime, and would therefore not be vulnerable.\n"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "This issue was discovered by Teddy Astie of Vates\n"
        }
      ],
      "data_format": "MITRE",
      "data_type": "CVE",
      "data_version": "4.0",
      "description": {
        "description_data": [
          {
            "lang": "eng",
            "value": "Incorrect placement of a preprocessor directive in source code results\nin logic that doesn\u0027t operate as intended when support for HVM guests is\ncompiled out of Xen.\n"
          }
        ]
      },
      "problemtype": {
        "problemtype_data": [
          {
            "description": [
              {
                "lang": "eng",
                "value": "n/a"
              }
            ]
          }
        ]
      },
      "references": {
        "reference_data": [
          {
            "name": "https://xenbits.xenproject.org/xsa/advisory-450.html",
            "refsource": "MISC",
            "url": "https://xenbits.xenproject.org/xsa/advisory-450.html"
          }
        ]
      },
      "work_around": [
        {
          "lang": "en",
          "value": "There is no mitigation.\n"
        }
      ]
    },
    "nvd.nist.gov": {
      "cve": {
        "descriptions": [
          {
            "lang": "en",
            "value": "Incorrect placement of a preprocessor directive in source code results\nin logic that doesn\u0027t operate as intended when support for HVM guests is\ncompiled out of Xen.\n"
          }
        ],
        "id": "CVE-2023-46840",
        "lastModified": "2024-03-20T13:00:16.367",
        "metrics": {},
        "published": "2024-03-20T11:15:08.180",
        "references": [
          {
            "source": "security@xen.org",
            "url": "https://xenbits.xenproject.org/xsa/advisory-450.html"
          }
        ],
        "sourceIdentifier": "security@xen.org",
        "vulnStatus": "Awaiting Analysis"
      }
    }
  }
}



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