cnvd - cnvd-2016-00772

cnvd-2016-00772

Vulnerability from cnvd

Title: Xen 'PV superpage'函数安全绕过漏洞

Description:

Xen是英国剑桥大学开发的一款开源的虚拟机监视器产品。该产品能够使不同和不兼容的操作系统运行在同一台计算机上，并支持在运行时进行迁移，保证正常运行并且避免宕机。

Xen的arch/x86/mm.c文件中的'PV superpage'函数存在安全漏洞，该漏洞源于HYPERVISOR_mmuext_op超级调用中的MMUEXT_MARK_SUPER和MMUEXT_UNMARK_SUPER sub-op未能正确验证页面标识符（MFN）；程序执行页表更新时未能正确验证输入数据。本地PV虚拟机端攻击者可利用该漏洞获取信息，造成拒绝服务，获取权限。

Severity: 高

Patch Name: Xen 'PV superpage'函数安全绕过漏洞的补丁

Patch Description:

Formal description:

目前厂商已经发布升级补丁/版本以修复这个安全问题，请用户及时下载更新： http://xenbits.xen.org/xsa/advisory-167.html

Reference: https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-1570 http://www.securityfocus.com/bid/81292/

Impacted products

Name
['Xen Xen 4.1.x-4.6.x', 'Xen Xen 3.4.0', 'Xen Xen 3.4.1']

Show details on source website

JSON

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{
  "bids": {
    "bid": {
      "bidNumber": "81292"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-1570"
    }
  },
  "description": "Xen\u662f\u82f1\u56fd\u5251\u6865\u5927\u5b66\u5f00\u53d1\u7684\u4e00\u6b3e\u5f00\u6e90\u7684\u865a\u62df\u673a\u76d1\u89c6\u5668\u4ea7\u54c1\u3002\u8be5\u4ea7\u54c1\u80fd\u591f\u4f7f\u4e0d\u540c\u548c\u4e0d\u517c\u5bb9\u7684\u64cd\u4f5c\u7cfb\u7edf\u8fd0\u884c\u5728\u540c\u4e00\u53f0\u8ba1\u7b97\u673a\u4e0a\uff0c\u5e76\u652f\u6301\u5728\u8fd0\u884c\u65f6\u8fdb\u884c\u8fc1\u79fb\uff0c\u4fdd\u8bc1\u6b63\u5e38\u8fd0\u884c\u5e76\u4e14\u907f\u514d\u5b95\u673a\u3002\r\n\r\nXen\u7684arch/x86/mm.c\u6587\u4ef6\u4e2d\u7684\u0027PV superpage\u0027\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eHYPERVISOR_mmuext_op\u8d85\u7ea7\u8c03\u7528\u4e2d\u7684MMUEXT_MARK_SUPER\u548cMMUEXT_UNMARK_SUPER sub-op\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u9875\u9762\u6807\u8bc6\u7b26\uff08MFN\uff09\uff1b\u7a0b\u5e8f\u6267\u884c\u9875\u8868\u66f4\u65b0\u65f6\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u8f93\u5165\u6570\u636e\u3002\u672c\u5730PV\u865a\u62df\u673a\u7aef\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u4fe1\u606f\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff0c\u83b7\u53d6\u6743\u9650\u3002",
  "discovererName": "Qinghao Tang of 360 Marvel Team.",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u5347\u7ea7\u8865\u4e01/\u7248\u672c\u4ee5\u4fee\u590d\u8fd9\u4e2a\u5b89\u5168\u95ee\u9898\uff0c\u8bf7\u7528\u6237\u53ca\u65f6\u4e0b\u8f7d\u66f4\u65b0\uff1a\r\nhttp://xenbits.xen.org/xsa/advisory-167.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-00772",
  "openTime": "2016-03-03",
  "patchDescription": "Xen\u662f\u82f1\u56fd\u5251\u6865\u5927\u5b66\u5f00\u53d1\u7684\u4e00\u6b3e\u5f00\u6e90\u7684\u865a\u62df\u673a\u76d1\u89c6\u5668\u4ea7\u54c1\u3002\u8be5\u4ea7\u54c1\u80fd\u591f\u4f7f\u4e0d\u540c\u548c\u4e0d\u517c\u5bb9\u7684\u64cd\u4f5c\u7cfb\u7edf\u8fd0\u884c\u5728\u540c\u4e00\u53f0\u8ba1\u7b97\u673a\u4e0a\uff0c\u5e76\u652f\u6301\u5728\u8fd0\u884c\u65f6\u8fdb\u884c\u8fc1\u79fb\uff0c\u4fdd\u8bc1\u6b63\u5e38\u8fd0\u884c\u5e76\u4e14\u907f\u514d\u5b95\u673a\u3002\r\n\r\nXen\u7684arch/x86/mm.c\u6587\u4ef6\u4e2d\u7684\u0027PV superpage\u0027\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8eHYPERVISOR_mmuext_op\u8d85\u7ea7\u8c03\u7528\u4e2d\u7684MMUEXT_MARK_SUPER\u548cMMUEXT_UNMARK_SUPER sub-op\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u9875\u9762\u6807\u8bc6\u7b26\uff08MFN\uff09\uff1b\u7a0b\u5e8f\u6267\u884c\u9875\u8868\u66f4\u65b0\u65f6\u672a\u80fd\u6b63\u786e\u9a8c\u8bc1\u8f93\u5165\u6570\u636e\u3002\u672c\u5730PV\u865a\u62df\u673a\u7aef\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u4fe1\u606f\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff0c\u83b7\u53d6\u6743\u9650\u3002\u76ee\u524d\uff0c\u4f9b\u5e94\u5546\u53d1\u5e03\u4e86\u5b89\u5168\u516c\u544a\u53ca\u76f8\u5173\u8865\u4e01\u4fe1\u606f\uff0c\u4fee\u590d\u4e86\u6b64\u6f0f\u6d1e\u3002",
  "patchName": "Xen \u0027PV superpage\u0027\u51fd\u6570\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Xen Xen 4.1.x-4.6.x",
      "Xen Xen 3.4.0",
      "Xen Xen 3.4.1"
    ]
  },
  "referenceLink": "https://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2016-1570\r\nhttp://www.securityfocus.com/bid/81292/",
  "serverity": "\u9ad8",
  "submitTime": "2016-01-28",
  "title": "Xen \u0027PV superpage\u0027\u51fd\u6570\u5b89\u5168\u7ed5\u8fc7\u6f0f\u6d1e"
}

CVE-2016-1570 (GCVE-0-2016-1570)

Vulnerability from cvelistv5

Published

2016-01-22 15:00

Modified

2024-08-05 23:02

Severity ?

CWE

Summary

The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates.

References

▼	URL	Tags
	http://www.debian.org/security/2016/dsa-3519	vendor-advisory, x_refsource_DEBIAN
	http://www.securitytracker.com/id/1034744	vdb-entry, x_refsource_SECTRACK
	http://xenbits.xen.org/xsa/advisory-167.html	x_refsource_CONFIRM

Impacted products

	Vendor	Product	Version
	n/a	n/a	Version: n/a

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-05T23:02:11.689Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "name": "DSA-3519",
            "tags": [
              "vendor-advisory",
              "x_refsource_DEBIAN",
              "x_transferred"
            ],
            "url": "http://www.debian.org/security/2016/dsa-3519"
          },
          {
            "name": "1034744",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1034744"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://xenbits.xen.org/xsa/advisory-167.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2016-01-20T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2016-11-30T18:57:01",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "name": "DSA-3519",
          "tags": [
            "vendor-advisory",
            "x_refsource_DEBIAN"
          ],
          "url": "http://www.debian.org/security/2016/dsa-3519"
        },
        {
          "name": "1034744",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1034744"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://xenbits.xen.org/xsa/advisory-167.html"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2016-1570",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "n/a",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "n/a"
                          }
                        ]
                      }
                    }
                  ]
                },
                "vendor_name": "n/a"
              }
            ]
          }
        },
        "data_format": "MITRE",
        "data_type": "CVE",
        "data_version": "4.0",
        "description": {
          "description_data": [
            {
              "lang": "eng",
              "value": "The PV superpage functionality in arch/x86/mm.c in Xen 3.4.0, 3.4.1, and 4.1.x through 4.6.x allows local PV guests to obtain sensitive information, cause a denial of service, gain privileges, or have unspecified other impact via a crafted page identifier (MFN) to the (1) MMUEXT_MARK_SUPER or (2) MMUEXT_UNMARK_SUPER sub-op in the HYPERVISOR_mmuext_op hypercall or (3) unknown vectors related to page table updates."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
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        },
        "references": {
          "reference_data": [
            {
              "name": "DSA-3519",
              "refsource": "DEBIAN",
              "url": "http://www.debian.org/security/2016/dsa-3519"
            },
            {
              "name": "1034744",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1034744"
            },
            {
              "name": "http://xenbits.xen.org/xsa/advisory-167.html",
              "refsource": "CONFIRM",
              "url": "http://xenbits.xen.org/xsa/advisory-167.html"
            }
          ]
        }
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    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-1570",
    "datePublished": "2016-01-22T15:00:00",
    "dateReserved": "2016-01-11T00:00:00",
    "dateUpdated": "2024-08-05T23:02:11.689Z",
    "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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