csaf_certbund - wid-sec-w-2024-0261

wid-sec-w-2024-0261

Vulnerability from csaf_certbund

Published

2024-01-30 23:00

Modified

2024-03-11 23:00

Summary

Xen: Mehrere Schwachstellen

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

Xen ist ein Virtueller-Maschinen-Monitor (VMM), der Hardware (x86, IA-64, PowerPC) für die darauf laufenden Systeme (Domains) paravirtualisiert. Fedora ist eine von Red Hat abstammende Linux-Distribution. SUSE Linux ist eine Linux-Distribution bzw. Open Source Plattform.

Angriff

Ein lokaler Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um Informationen offenzulegen oder Sicherheitsvorkehrungen zu umgehen.

Betroffene Betriebssysteme

- UNIX - Linux

JSON

To clipboard

{
  "document": {
    "aggregate_severity": {
      "text": "niedrig"
    },
    "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": "Xen ist ein Virtueller-Maschinen-Monitor (VMM), der Hardware (x86, IA-64, PowerPC) f\u00fcr die darauf laufenden Systeme (Domains) paravirtualisiert.\r\nFedora ist eine von Red Hat abstammende Linux-Distribution.\r\nSUSE Linux ist eine Linux-Distribution bzw. Open Source Plattform.",
        "title": "Produktbeschreibung"
      },
      {
        "category": "summary",
        "text": "Ein lokaler Angreifer kann mehrere Schwachstellen in Xen ausnutzen, um Informationen offenzulegen oder Sicherheitsvorkehrungen zu umgehen.",
        "title": "Angriff"
      },
      {
        "category": "general",
        "text": "- UNIX\n- Linux",
        "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-2024-0261 - CSAF Version",
        "url": "https://wid.cert-bund.de/.well-known/csaf/white/2024/wid-sec-w-2024-0261.json"
      },
      {
        "category": "self",
        "summary": "WID-SEC-2024-0261 - Portal Version",
        "url": "https://wid.cert-bund.de/portal/wid/securityadvisory?name=WID-SEC-2024-0261"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory vom 2024-01-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-4b2cf8c375"
      },
      {
        "category": "external",
        "summary": "Fedora Security Advisory vom 2024-01-30",
        "url": "https://bodhi.fedoraproject.org/updates/FEDORA-2024-e527e6fd08"
      },
      {
        "category": "external",
        "summary": "Suse Security Advisory vom 2024-01-30",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-January/017810.html"
      },
      {
        "category": "external",
        "summary": "Suse Security Advisory vom 2024-01-30",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-January/017811.html"
      },
      {
        "category": "external",
        "summary": "Suse Security Advisory vom 2024-01-30",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-January/017812.html"
      },
      {
        "category": "external",
        "summary": "Suse Security Advisory vom 2024-01-30",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-January/017813.html"
      },
      {
        "category": "external",
        "summary": "XEN Security Advisory vom 2024-01-30",
        "url": "https://xenbits.xen.org/xsa/advisory-449.html"
      },
      {
        "category": "external",
        "summary": "XEN Security Advisory vom 2024-01-30",
        "url": "https://xenbits.xen.org/xsa/advisory-450.html"
      },
      {
        "category": "external",
        "summary": "SUSE Security Update SUSE-SU-2024:0830-1 vom 2024-03-11",
        "url": "https://lists.suse.com/pipermail/sle-security-updates/2024-March/018142.html"
      }
    ],
    "source_lang": "en-US",
    "title": "Xen: Mehrere Schwachstellen",
    "tracking": {
      "current_release_date": "2024-03-11T23:00:00.000+00:00",
      "generator": {
        "date": "2024-03-12T09:06:12.684+00:00",
        "engine": {
          "name": "BSI-WID",
          "version": "1.3.0"
        }
      },
      "id": "WID-SEC-W-2024-0261",
      "initial_release_date": "2024-01-30T23:00:00.000+00:00",
      "revision_history": [
        {
          "date": "2024-01-30T23:00:00.000+00:00",
          "number": "1",
          "summary": "Initiale Fassung"
        },
        {
          "date": "2024-03-11T23:00:00.000+00:00",
          "number": "2",
          "summary": "Neue Updates von SUSE aufgenommen"
        }
      ],
      "status": "final",
      "version": "2"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_name",
            "name": "Fedora Linux",
            "product": {
              "name": "Fedora Linux",
              "product_id": "74178",
              "product_identification_helper": {
                "cpe": "cpe:/o:fedoraproject:fedora:-"
              }
            }
          }
        ],
        "category": "vendor",
        "name": "Fedora"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_version_range",
                "name": "\u003c xsa449-4.16.patch",
                "product": {
                  "name": "Open Source Xen \u003c xsa449-4.16.patch",
                  "product_id": "T032439",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:xen:xen:xsa449-4.16.patch"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "Xen 4.17.x \u003c xsa450.patch",
                "product": {
                  "name": "Open Source Xen Xen 4.17.x \u003c xsa450.patch",
                  "product_id": "T032440",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:xen:xen:xen_4.17.x__xsa450.patch"
                  }
                }
              },
              {
                "category": "product_version_range",
                "name": "Xen 4.17.x \u003c xsa449.patch",
                "product": {
                  "name": "Open Source Xen Xen 4.17.x \u003c xsa449.patch",
                  "product_id": "T032441",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:xen:xen:xen_4.17.x__xsa449.patch"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Xen"
          }
        ],
        "category": "vendor",
        "name": "Open Source"
      },
      {
        "branches": [
          {
            "branches": [
              {
                "category": "product_name",
                "name": "SUSE Linux",
                "product": {
                  "name": "SUSE Linux",
                  "product_id": "T002207",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:suse_linux:-"
                  }
                }
              },
              {
                "category": "product_name",
                "name": "SUSE Linux",
                "product": {
                  "name": "SUSE Linux",
                  "product_id": "T023252",
                  "product_identification_helper": {
                    "cpe": "cpe:/o:suse:suse_linux:enterprise"
                  }
                }
              }
            ],
            "category": "product_name",
            "name": "Linux"
          }
        ],
        "category": "vendor",
        "name": "SUSE"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2023-46839",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Xen. Diese besteht in PCI Ger\u00e4ten im Zusammenhang mit sogenannten Phantomfunktionen. Ein b\u00f6swilliger Gast, dem ein PCI-Ger\u00e4t mit Phantomfunktionen zugewiesen wurde, kann auf den Speicher eines fr\u00fcheren Besitzers des Ger\u00e4ts zugreifen. Ein Angreifer kann diese Schwachstelle ausnutzen, um Informationen offenzulegen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T002207",
          "74178",
          "T023252"
        ]
      },
      "release_date": "2024-01-30T23:00:00Z",
      "title": "CVE-2023-46839"
    },
    {
      "cve": "CVE-2023-46840",
      "notes": [
        {
          "category": "description",
          "text": "Es existiert eine Schwachstelle in Xen. Wenn ein Ger\u00e4t aus einer Dom\u00e4ne entfernt wird, wird es nicht ordnungsgem\u00e4\u00df unter Quarant\u00e4ne gestellt und beh\u00e4lt seinen Zugriff auf die Dom\u00e4ne, der es zuvor zugewiesen war. Ein Angreifer kann diese Schwachstelle ausnutzen, um Sicherheitsvorkehrungen zu umgehen."
        }
      ],
      "product_status": {
        "known_affected": [
          "T002207",
          "74178",
          "T023252"
        ]
      },
      "release_date": "2024-01-30T23:00:00Z",
      "title": "CVE-2023-46840"
    }
  ]
}

cve-2023-46839

Vulnerability from cvelistv5

Published

2024-03-20 10:35

Modified

2024-11-21 19:17

Severity ?

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Summary

pci: phantom functions assigned to incorrect contexts

References

▼	URL	Tags
	https://xenbits.xenproject.org/xsa/advisory-449.html

Impacted products

▼	Vendor	Product
	Xen	Xen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T20:53:21.878Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-449.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "NETWORK",
              "availabilityImpact": "NONE",
              "baseScore": 5.3,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "LOW",
              "integrityImpact": "NONE",
              "privilegesRequired": "NONE",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-46839",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-06T14:00:00.793454Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-21T19:17:55.653Z",
          "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-449"
            }
          ]
        }
      ],
      "configurations": [
        {
          "lang": "en",
          "value": "Systems running all version of Xen are affected.\n\nOnly x86 systems are vulnerable.  Arm systems are not vulnerable.\n\nOnly systems using PCI passthrough of devices with phantom functions\nare affected.\n"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "This issue was discovered by Roger Pau Monn\u00e9 of XenServer.\n"
        }
      ],
      "datePublic": "2024-01-30T12:00:00Z",
      "descriptions": [
        {
          "lang": "en",
          "value": "PCI devices can make use of a functionality called phantom functions,\nthat when enabled allows the device to generate requests using the IDs\nof functions that are otherwise unpopulated.  This allows a device to\nextend the number of outstanding requests.\n\nSuch phantom functions need an IOMMU context setup, but failure to\nsetup the context is not fatal when the device is assigned.  Not\nfailing device assignment when such failure happens can lead to the\nprimary device being assigned to a guest, while some of the phantom\nfunctions are assigned to a different domain.\n"
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "Under certain circumstances a malicious guest assigned a PCI device\nwith phantom functions may be able to access memory from a previous\nowner of the device.\n"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-03-20T10:35:52.532Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "url": "https://xenbits.xenproject.org/xsa/advisory-449.html"
        }
      ],
      "title": "pci: phantom functions assigned to incorrect contexts",
      "workarounds": [
        {
          "lang": "en",
          "value": "There is no mitigation (other than not passing through PCI devices\nwith phantom functions to guests).\n"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2023-46839",
    "datePublished": "2024-03-20T10:35:52.532Z",
    "dateReserved": "2023-10-27T07:55:35.332Z",
    "dateUpdated": "2024-11-21T19:17:55.653Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

cve-2023-46840

Vulnerability from cvelistv5

Published

2024-03-20 10:40

Modified

2024-11-04 21:39

Severity ?

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

Summary

VT-d: Failure to quarantine devices in !HVM builds

References

▼	URL	Tags
	https://xenbits.xenproject.org/xsa/advisory-450.html

Impacted products

▼	Vendor	Product
	Xen	Xen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-02T20:53:21.926Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-450.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "HIGH",
              "attackVector": "LOCAL",
              "availabilityImpact": "NONE",
              "baseScore": 4.1,
              "baseSeverity": "MEDIUM",
              "confidentialityImpact": "NONE",
              "integrityImpact": "HIGH",
              "privilegesRequired": "HIGH",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:N",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2023-46840",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-08-05T18:59:02.763689Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-04T21:39:44.430Z",
          "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-450"
            }
          ]
        }
      ],
      "configurations": [
        {
          "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",
          "type": "finder",
          "value": "This issue was discovered by Teddy Astie of Vates\n"
        }
      ],
      "datePublic": "2024-01-30T12:00:00Z",
      "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"
        }
      ],
      "impacts": [
        {
          "descriptions": [
            {
              "lang": "en",
              "value": "When a device is removed from a domain, it is not properly quarantined\nand retains its access to the domain to which it was previously\nassigned.\n"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-03-20T10:40:18.050Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "url": "https://xenbits.xenproject.org/xsa/advisory-450.html"
        }
      ],
      "title": "VT-d: Failure to quarantine devices in !HVM builds",
      "workarounds": [
        {
          "lang": "en",
          "value": "There is no mitigation.\n"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2023-46840",
    "datePublished": "2024-03-20T10:40:18.050Z",
    "dateReserved": "2023-10-27T07:55:35.333Z",
    "dateUpdated": "2024-11-04T21:39:44.430Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
Confirmed: The vulnerability is confirmed from an analyst perspective.
Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
Patched: This vulnerability was successfully patched by the user reporting the sighting.
Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
Not confirmed: The user expresses doubt about the veracity of the vulnerability.
Not patched: This vulnerability was not successfully patched by the user reporting the sighting.

Action not permitted

wid-sec-w-2024-0261

Vulnerability from csaf_certbund

cve-2023-46839

Vulnerability from cvelistv5

cve-2023-46840

Vulnerability from cvelistv5

Tags

Sightings

Nomenclature