github - ghsa-74f6-jp2h-2vw3

ghsa-74f6-jp2h-2vw3

Vulnerability from github

Published

2022-01-26 00:01

Modified

2022-03-26 00:01

Severity ?

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

Details

arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn't have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes.

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{
  "affected": [],
  "aliases": [
    "CVE-2022-23033"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-863"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2022-01-25T14:15:00Z",
    "severity": "HIGH"
  },
  "details": "arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn\u0027t have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes.",
  "id": "GHSA-74f6-jp2h-2vw3",
  "modified": "2022-03-26T00:01:04Z",
  "published": "2022-01-26T00:01:31Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2022-23033"
    },
    {
      "type": "WEB",
      "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3"
    },
    {
      "type": "WEB",
      "url": "https://security.gentoo.org/glsa/202208-23"
    },
    {
      "type": "WEB",
      "url": "https://www.debian.org/security/2022/dsa-5117"
    },
    {
      "type": "WEB",
      "url": "https://xenbits.xenproject.org/xsa/advisory-393.txt"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2022/01/25/2"
    }
  ],
  "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"
    }
  ]
}

cve-2022-23033

Vulnerability from cvelistv5

Published

2022-01-25 13:36

Modified

2024-08-03 03:28

Severity ?

Summary

References

▼	URL	Tags
	https://xenbits.xenproject.org/xsa/advisory-393.txt	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2022/01/25/2	mailing-list, x_refsource_MLIST
	https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/	vendor-advisory, x_refsource_FEDORA
	https://www.debian.org/security/2022/dsa-5117	vendor-advisory, x_refsource_DEBIAN
	https://security.gentoo.org/glsa/202208-23	vendor-advisory, x_refsource_GENTOO

Impacted products

Vendor

Product

Version

▼

Xen

xen

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T03:28:42.940Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-393.txt"
          },
          {
            "name": "[oss-security] 20220125 Xen Security Advisory 393 v2 (CVE-2022-23033) - arm: guest_physmap_remove_page not removing the p2m mappings",
            "tags": [
              "mailing-list",
              "x_refsource_MLIST",
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2022/01/25/2"
          },
          {
            "name": "FEDORA-2022-0cc3916e08",
            "tags": [
              "vendor-advisory",
              "x_refsource_FEDORA",
              "x_transferred"
            ],
            "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/"
          },
          {
            "name": "DSA-5117",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "https://www.debian.org/security/2022/dsa-5117"
          },
          {
            "name": "GLSA-202208-23",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202208-23"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "xen",
          "vendor": "Xen",
          "versions": [
            {
              "status": "unknown",
              "version": "consult Xen advisory XSA-393"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "value": "{\u0027credit_data\u0027: {\u0027description\u0027: {\u0027description_data\u0027: [{\u0027lang\u0027: \u0027eng\u0027, \u0027value\u0027: \u0027This issue was discovered by Dmytro Firsov of EPAM.\u0027}]}}}"
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn\u0027t have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes."
        }
      ],
      "metrics": [
        {
          "other": {
            "content": {
              "description": {
                "description_data": [
                  {
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                    "value": "A malicious guest may be able to access Xen and other domains\u0027 memory.\nThis could cause information leaks, host or domain Denial of Service\n(DoS), and privilege escalations."
                  }
                ]
              }
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      "providerMetadata": {
        "dateUpdated": "2022-08-14T20:08:37",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
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          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://xenbits.xenproject.org/xsa/advisory-393.txt"
        },
        {
          "name": "[oss-security] 20220125 Xen Security Advisory 393 v2 (CVE-2022-23033) - arm: guest_physmap_remove_page not removing the p2m mappings",
          "tags": [
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          ],
          "url": "http://www.openwall.com/lists/oss-security/2022/01/25/2"
        },
        {
          "name": "FEDORA-2022-0cc3916e08",
          "tags": [
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            "x_refsource_FEDORA"
          ],
          "url": "https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/"
        },
        {
          "name": "DSA-5117",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "https://www.debian.org/security/2022/dsa-5117"
        },
        {
          "name": "GLSA-202208-23",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/202208-23"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "security@xen.org",
          "ID": "CVE-2022-23033",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "xen",
                      "version": {
                        "version_data": [
                          {
                            "version_affected": "?",
                            "version_value": "consult Xen advisory XSA-393"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "Xen"
              }
            ]
          }
        },
        "configuration": {
          "configuration_data": {
            "description": {
              "description_data": [
                {
                  "lang": "eng",
                  "value": "Xen version 4.12 and newer are vulnerable.  Only Arm systems are\nvulnerable.\n\nx86 systems are not vulnerable."
                }
              ]
            }
          }
        },
        "credit": {
          "credit_data": {
            "description": {
              "description_data": [
                {
                  "lang": "eng",
                  "value": "This issue was discovered by Dmytro Firsov of EPAM."
                }
              ]
            }
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "arm: guest_physmap_remove_page not removing the p2m mappings The functions to remove one or more entries from a guest p2m pagetable on Arm (p2m_remove_mapping, guest_physmap_remove_page, and p2m_set_entry with mfn set to INVALID_MFN) do not actually clear the pagetable entry if the entry doesn\u0027t have the valid bit set. It is possible to have a valid pagetable entry without the valid bit set when a guest operating system uses set/way cache maintenance instructions. For instance, a guest issuing a set/way cache maintenance instruction, then calling the XENMEM_decrease_reservation hypercall to give back memory pages to Xen, might be able to retain access to those pages even after Xen started reusing them for other purposes."
            }
          ]
        },
        "impact": {
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                {
                  "lang": "eng",
                  "value": "A malicious guest may be able to access Xen and other domains\u0027 memory.\nThis could cause information leaks, host or domain Denial of Service\n(DoS), and privilege escalations."
                }
              ]
            }
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        },
        "problemtype": {
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                  "lang": "eng",
                  "value": "unknown"
                }
              ]
            }
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        },
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              "refsource": "MISC",
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            },
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            },
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              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OMR6UBGJW6JKND7IILGQ2CU35EQPF3E3/"
            },
            {
              "name": "DSA-5117",
              "refsource": "DEBIAN",
              "url": "https://www.debian.org/security/2022/dsa-5117"
            },
            {
              "name": "GLSA-202208-23",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202208-23"
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        "workaround": {
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                  "value": "There is no known mitigation."
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2022-23033",
    "datePublished": "2022-01-25T13:36:25",
    "dateReserved": "2022-01-10T00:00:00",
    "dateUpdated": "2024-08-03T03:28:42.940Z",
    "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.

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