cnvd - cnvd-2016-09012

cnvd-2016-09012

Vulnerability from cnvd

Title: Xen信息修改漏洞

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 4.7.x及之前的版本中存在修改漏洞，该漏洞源于程序未能正确设置CR0.TS和CR0.EM。本地x86 HVM客户端攻击者可利用该漏洞读取或修改FPU、MMX或XMM注册状态信息。

Severity: 低

Patch Name: Xen信息修改漏洞的补丁

Patch Description:

Xen 4.7.x及之前的版本中存在修改漏洞，该漏洞源于程序未能正确设置CR0.TS和CR0.EM。本地x86 HVM客户端攻击者可利用该漏洞读取或修改FPU、MMX或XMM注册状态信息。目前，供应商发布了安全公告及相关补丁信息，修复了此漏洞。

Formal description:

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： http://xenbits.xen.org/xsa/advisory-190.html

Reference: http://securitytracker.com/id/1036942 http://www.securityfocus.com/bid/93344

Impacted products

Name
Xen Xen <=4.7.x

Show details on source website

JSON

To clipboard

{
  "bids": {
    "bid": {
      "bidNumber": "93344"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-7777"
    }
  },
  "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 4.7.x\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u5b58\u5728\u4fee\u6539\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u8bbe\u7f6eCR0.TS\u548cCR0.EM\u3002\u672c\u5730x86 HVM\u5ba2\u6237\u7aef\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bfb\u53d6\u6216\u4fee\u6539FPU\u3001MMX\u6216XMM\u6ce8\u518c\u72b6\u6001\u4fe1\u606f\u3002",
  "discovererName": "Jan Beulich from SUSE.",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttp://xenbits.xen.org/xsa/advisory-190.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-09012",
  "openTime": "2016-10-17",
  "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 4.7.x\u53ca\u4e4b\u524d\u7684\u7248\u672c\u4e2d\u5b58\u5728\u4fee\u6539\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u8bbe\u7f6eCR0.TS\u548cCR0.EM\u3002\u672c\u5730x86 HVM\u5ba2\u6237\u7aef\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bfb\u53d6\u6216\u4fee\u6539FPU\u3001MMX\u6216XMM\u6ce8\u518c\u72b6\u6001\u4fe1\u606f\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\u4fe1\u606f\u4fee\u6539\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Xen Xen \u003c=4.7.x"
  },
  "referenceLink": "http://securitytracker.com/id/1036942\r\nhttp://www.securityfocus.com/bid/93344",
  "serverity": "\u4f4e",
  "submitTime": "2016-10-11",
  "title": "Xen\u4fe1\u606f\u4fee\u6539\u6f0f\u6d1e"
}

CVE-2016-7777 (GCVE-0-2016-7777)

Vulnerability from cvelistv5

Published

2016-10-07 14:00

Modified

2024-08-06 02:04

Severity ?

CWE

Summary

Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it.

References

▼	URL	Tags
	https://support.citrix.com/article/CTX217363	x_refsource_CONFIRM
	http://xenbits.xen.org/xsa/advisory-190.html	x_refsource_CONFIRM
	http://www.securityfocus.com/bid/93344	vdb-entry, x_refsource_BID
	https://security.gentoo.org/glsa/201611-09	vendor-advisory, x_refsource_GENTOO
	http://www.securitytracker.com/id/1036942	vdb-entry, x_refsource_SECTRACK

Impacted products

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

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-06T02:04:55.996Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "https://support.citrix.com/article/CTX217363"
          },
          {
            "tags": [
              "x_refsource_CONFIRM",
              "x_transferred"
            ],
            "url": "http://xenbits.xen.org/xsa/advisory-190.html"
          },
          {
            "name": "93344",
            "tags": [
              "vdb-entry",
              "x_refsource_BID",
              "x_transferred"
            ],
            "url": "http://www.securityfocus.com/bid/93344"
          },
          {
            "name": "GLSA-201611-09",
            "tags": [
              "vendor-advisory",
              "x_refsource_GENTOO",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/201611-09"
          },
          {
            "name": "1036942",
            "tags": [
              "vdb-entry",
              "x_refsource_SECTRACK",
              "x_transferred"
            ],
            "url": "http://www.securitytracker.com/id/1036942"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "datePublic": "2016-10-04T00:00:00",
      "descriptions": [
        {
          "lang": "en",
          "value": "Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2017-06-30T16:57:01",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "https://support.citrix.com/article/CTX217363"
        },
        {
          "tags": [
            "x_refsource_CONFIRM"
          ],
          "url": "http://xenbits.xen.org/xsa/advisory-190.html"
        },
        {
          "name": "93344",
          "tags": [
            "vdb-entry",
            "x_refsource_BID"
          ],
          "url": "http://www.securityfocus.com/bid/93344"
        },
        {
          "name": "GLSA-201611-09",
          "tags": [
            "vendor-advisory",
            "x_refsource_GENTOO"
          ],
          "url": "https://security.gentoo.org/glsa/201611-09"
        },
        {
          "name": "1036942",
          "tags": [
            "vdb-entry",
            "x_refsource_SECTRACK"
          ],
          "url": "http://www.securitytracker.com/id/1036942"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "cve@mitre.org",
          "ID": "CVE-2016-7777",
          "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": "Xen 4.7.x and earlier does not properly honor CR0.TS and CR0.EM, which allows local x86 HVM guest OS users to read or modify FPU, MMX, or XMM register state information belonging to arbitrary tasks on the guest by modifying an instruction while the hypervisor is preparing to emulate it."
            }
          ]
        },
        "problemtype": {
          "problemtype_data": [
            {
              "description": [
                {
                  "lang": "eng",
                  "value": "n/a"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://support.citrix.com/article/CTX217363",
              "refsource": "CONFIRM",
              "url": "https://support.citrix.com/article/CTX217363"
            },
            {
              "name": "http://xenbits.xen.org/xsa/advisory-190.html",
              "refsource": "CONFIRM",
              "url": "http://xenbits.xen.org/xsa/advisory-190.html"
            },
            {
              "name": "93344",
              "refsource": "BID",
              "url": "http://www.securityfocus.com/bid/93344"
            },
            {
              "name": "GLSA-201611-09",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/201611-09"
            },
            {
              "name": "1036942",
              "refsource": "SECTRACK",
              "url": "http://www.securitytracker.com/id/1036942"
            }
          ]
        }
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2016-7777",
    "datePublished": "2016-10-07T14:00:00",
    "dateReserved": "2016-09-09T00:00:00",
    "dateUpdated": "2024-08-06T02:04:55.996Z",
    "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