Vulnerability-Lookup

CNVD-2020-61022

Vulnerability from cnvd - Published: 2020-11-07

Title

Xen数据伪造问题漏洞

Description

Xen是英国剑桥大学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 4.14.x 系列版本及之前版本存在安全漏洞，该漏洞使x86 guest虚拟机OS用户可以拒绝服务，导致数据泄漏或可能获得特权。目前没有详细的漏洞细节提供。

Severity

中

Patch Name

Xen数据伪造问题漏洞的补丁

Patch Description

Formal description

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://xenbits.xen.org/xsa/advisory-347.html

Reference

http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html

Impacted products

Name
Xen Xen <=4.14.*

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-27670",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-27670"
    }
  },
  "description": "Xen\u662f\u82f1\u56fd\u5251\u6865\u5927\u5b66\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\n\nXen 4.14.x \u7cfb\u5217\u7248\u672c\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u4f7fx86 guest\u865a\u62df\u673aOS\u7528\u6237\u53ef\u4ee5\u62d2\u7edd\u670d\u52a1\uff0c\u5bfc\u81f4\u6570\u636e\u6cc4\u6f0f\u6216\u53ef\u80fd\u83b7\u5f97\u7279\u6743\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\u3002",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u53d1\u5e03\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6f0f\u6d1e\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttps://xenbits.xen.org/xsa/advisory-347.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-61022",
  "openTime": "2020-11-07",
  "patchDescription": "Xen\u662f\u82f1\u56fd\u5251\u6865\u5927\u5b66\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 4.14.x \u7cfb\u5217\u7248\u672c\u53ca\u4e4b\u524d\u7248\u672c\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u4f7fx86 guest\u865a\u62df\u673aOS\u7528\u6237\u53ef\u4ee5\u62d2\u7edd\u670d\u52a1\uff0c\u5bfc\u81f4\u6570\u636e\u6cc4\u6f0f\u6216\u53ef\u80fd\u83b7\u5f97\u7279\u6743\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Xen Xen \u003c=4.14.*"
  },
  "referenceLink": "http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00075.html",
  "serverity": "\u4e2d",
  "submitTime": "2020-11-04",
  "title": "Xen\u6570\u636e\u4f2a\u9020\u95ee\u9898\u6f0f\u6d1e"
}

CVE-2020-27670 (GCVE-0-2020-27670)

Vulnerability from cvelistv5 – Published: 2020-10-22 20:34 – Updated: 2024-08-04 16:18

Summary

An issue was discovered in Xen through 4.14.x allowing x86 guest OS users to cause a denial of service (data corruption), cause a data leak, or possibly gain privileges because an AMD IOMMU page-table entry can be half-updated.

Severity

No CVSS data available.

CWE

Assigner

mitre CNA under the mitre root

CNA scorecard E 28/100 over 2322 records in the last 180 days details

References

8 references

URL	Tags
http://xenbits.xen.org/xsa/advisory-347.html	x_refsource_CONFIRM
https://xenbits.xen.org/xsa/advisory-347.html	x_refsource_MISC
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://security.gentoo.org/glsa/202011-06	vendor-advisoryx_refsource_GENTOO
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
https://www.debian.org/security/2020/dsa-4804	vendor-advisoryx_refsource_DEBIAN
http://www.openwall.com/lists/oss-security/2021/01/19/9	mailing-listx_refsource_MLIST

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.

Vulnerability timeline

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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.

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