cnvd - cnvd-2016-02455

cnvd-2016-02455

Vulnerability from cnvd

Title: Xen拒绝服务漏洞（CNVD-2016-02455）

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。

基于x86平台的Xen 3.4之前版本中存在安全漏洞，该漏洞源于superpage映射的虚拟机帧数存储在32位字段中。当程序使用shadow模式时，攻击者可利用该漏洞造成拒绝服务（主机崩溃，段错误或空指针逆向引用）。

Severity: 中

Patch Name: Xen拒绝服务漏洞（CNVD-2016-02455）的补丁

Patch Description:

基于x86平台的Xen 3.4之前版本中存在安全漏洞，该漏洞源于superpage映射的虚拟机帧数存储在32位字段中。当程序使用shadow模式时，攻击者可利用该漏洞造成拒绝服务（主机崩溃，段错误或空指针逆向引用）。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，详情请关注厂商主页： http://www.xenproject.org/

Reference: http://www.openwall.com/lists/oss-security/2016/04/18/4

Impacted products

Name
Xen Xen <3.4

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2016-3960"
    }
  },
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  "discovererName": "Ling Liu and Yihan Lian of the Cloud Security Team, Qihoo 360.",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8be6\u60c5\u8bf7\u5173\u6ce8\u5382\u5546\u4e3b\u9875\uff1a\r\nhttp://www.xenproject.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2016-02455",
  "openTime": "2016-04-22",
  "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\n\u57fa\u4e8ex86\u5e73\u53f0\u7684Xen 3.4\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8esuperpage\u6620\u5c04\u7684\u865a\u62df\u673a\u5e27\u6570\u5b58\u50a8\u572832\u4f4d\u5b57\u6bb5\u4e2d\u3002\u5f53\u7a0b\u5e8f\u4f7f\u7528shadow\u6a21\u5f0f\u65f6\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u4e3b\u673a\u5d29\u6e83\uff0c\u6bb5\u9519\u8bef\u6216\u7a7a\u6307\u9488\u9006\u5411\u5f15\u7528\uff09\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2016-02455\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Xen Xen \u003c3.4"
  },
  "referenceLink": "http://www.openwall.com/lists/oss-security/2016/04/18/4",
  "serverity": "\u4e2d",
  "submitTime": "2016-04-19",
  "title": "Xen\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2016-02455\uff09"
}

CVE-2016-3960 (GCVE-0-2016-3960)

Vulnerability from cvelistv5

Published

2016-04-19 14:00

Modified

2024-08-06 00:10

Severity ?

CWE

Summary

Integer overflow in the x86 shadow pagetable code in Xen allows local guest OS users to cause a denial of service (host crash) or possibly gain privileges by shadowing a superpage mapping.

References

▼	URL	Tags
	http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html	x_refsource_CONFIRM
	http://www.securitytracker.com/id/1035587	vdb-entry, x_refsource_SECTRACK
	http://lists.fedoraproject.org/pipermail/package-announce/2016-May/184209.html	vendor-advisory, x_refsource_FEDORA
	http://lists.fedoraproject.org/pipermail/package-announce/2016-April/183275.html	vendor-advisory, x_refsource_FEDORA
	http://xenbits.xen.org/xsa/advisory-173.html	x_refsource_CONFIRM
	http://lists.fedoraproject.org/pipermail/package-announce/2016-May/183350.html	vendor-advisory, x_refsource_FEDORA
	http://support.citrix.com/article/CTX209443	x_refsource_CONFIRM
	http://www.securityfocus.com/bid/86318	vdb-entry, x_refsource_BID
	http://www.debian.org/security/2016/dsa-3554	vendor-advisory, x_refsource_DEBIAN

Impacted products

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

Show details on NVD website

JSON

To clipboard

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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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