Vulnerability-Lookup

CNVD-2016-09012

Vulnerability from cnvd - Published: 2016-10-17

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

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 – Updated: 2024-08-06 02:04

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.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

5 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-entryx_refsource_BID
https://security.gentoo.org/glsa/201611-09	vendor-advisoryx_refsource_GENTOO
http://www.securitytracker.com/id/1036942	vdb-entryx_refsource_SECTRACK

Date Public

2016-10-04 00:00

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

Action not permitted

CNVD-2016-09012

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

Tags

Sightings

Nomenclature

Related by attack behaviour