cnvd - cnvd-2021-44718

cnvd-2021-44718

Vulnerability from cnvd

Title: Xen拒绝服务漏洞（CNVD-2021-44718）

Description:

Xen是一款开源虚拟机监视器产品。

Xen 4.14.*及更早版本存在拒绝服务漏洞，该漏洞源于存在差一错误，x86 HVM客户端操作系统用户可利用该漏洞导致拒绝服务，数据泄漏和提升权限。

Severity: 中

Patch Name: Xen拒绝服务漏洞（CNVD-2021-44718）的补丁

Patch Description:

Xen是一款开源虚拟机监视器产品。

Xen 4.14.*及更早版本存在拒绝服务漏洞，该漏洞源于存在差一错误，x86 HVM客户端操作系统用户可利用该漏洞导致拒绝服务，数据泄漏和提升权限。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:

厂商已发布了漏洞修复程序，请及时关注更新： https://xenbits.xen.org/xsa/advisory-355.html

Reference: https://nvd.nist.gov/vuln/detail/CVE-2020-29040

Impacted products

Name
Xen Xen <=4.14.*

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-29040",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-29040"
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  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://xenbits.xen.org/xsa/advisory-355.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-44718",
  "openTime": "2021-06-24",
  "patchDescription": "Xen\u662f\u4e00\u6b3e\u5f00\u6e90\u865a\u62df\u673a\u76d1\u89c6\u5668\u4ea7\u54c1\u3002\r\n\r\nXen 4.14.*\u53ca\u66f4\u65e9\u7248\u672c\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5b58\u5728\u5dee\u4e00\u9519\u8bef\uff0cx86 HVM\u5ba2\u6237\u7aef\u64cd\u4f5c\u7cfb\u7edf\u7528\u6237\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff0c\u6570\u636e\u6cc4\u6f0f\u548c\u63d0\u5347\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\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-44718\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Xen Xen \u003c=4.14.*"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-29040",
  "serverity": "\u4e2d",
  "submitTime": "2020-11-25",
  "title": "Xen\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2021-44718\uff09"
}

CVE-2020-29040 (GCVE-0-2020-29040)

Vulnerability from cvelistv5

Published

2020-11-24 16:07

Modified

2024-08-04 16:48

Severity ?

CWE

Summary

An issue was discovered in Xen through 4.14.x allowing x86 HVM guest OS users to cause a denial of service (stack corruption), cause a data leak, or possibly gain privileges because of an off-by-one error. NOTE: this issue is caused by an incorrect fix for CVE-2020-27671.

References

▼	URL	Tags
	http://xenbits.xen.org/xsa/advisory-355.html	x_refsource_CONFIRM
	https://xenbits.xen.org/xsa/advisory-355.html	x_refsource_MISC
	http://www.openwall.com/lists/oss-security/2021/01/19/4	mailing-list, x_refsource_MLIST

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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