Vulnerability-Lookup

CNVD-2019-07944

Vulnerability from cnvd - Published: 2019-03-22

Title

Xen影式分页冲突漏洞

Description

Xen是一个开源虚拟机监视器，由Xen Project开发。 4.11.x及更早版本的Xen存在影式分页冲突漏洞，该漏洞源于与影式分页关联的联合数据结构存在解释冲突，x86 PV客户端操作系统用户可利用该漏洞导致拒绝服务（主机操作系统崩溃）或可能获得主机操作系统权限。

Severity

高

Patch Name

Xen影式分页冲突漏洞的补丁

Patch Description

Xen是一个开源虚拟机监视器，由Xen Project开发。 4.11.x及更早版本的Xen存在影式分页冲突漏洞，该漏洞源于与影式分页关联的联合数据结构存在解释冲突，x86 PV客户端操作系统用户可利用该漏洞导致拒绝服务（主机操作系统崩溃）或可能获得主机操作系统权限。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-280.html

Reference

https://nvd.nist.gov/vuln/detail/CVE-2018-19966

Impacted products

Name
Xen Xen <=4.11.x

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-19966"
    }
  },
  "description": "Xen\u662f\u4e00\u4e2a\u5f00\u6e90\u865a\u62df\u673a\u76d1\u89c6\u5668\uff0c\u7531Xen Project\u5f00\u53d1\u3002\n\n4.11.x\u53ca\u66f4\u65e9\u7248\u672c\u7684Xen\u5b58\u5728\u5f71\u5f0f\u5206\u9875\u51b2\u7a81\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e0e\u5f71\u5f0f\u5206\u9875\u5173\u8054\u7684\u8054\u5408\u6570\u636e\u7ed3\u6784\u5b58\u5728\u89e3\u91ca\u51b2\u7a81\uff0cx86 PV\u5ba2\u6237\u7aef\u64cd\u4f5c\u7cfb\u7edf\u7528\u6237\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edf\u5d29\u6e83\uff09\u6216\u53ef\u80fd\u83b7\u5f97\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edf\u6743\u9650\u3002",
  "discovererName": "Paul Durrant, Matthew Daley, Julien Grall, the security team",
  "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-280.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2019-07944",
  "openTime": "2019-03-22",
  "patchDescription": "Xen\u662f\u4e00\u4e2a\u5f00\u6e90\u865a\u62df\u673a\u76d1\u89c6\u5668\uff0c\u7531Xen Project\u5f00\u53d1\u3002\r\n\r\n4.11.x\u53ca\u66f4\u65e9\u7248\u672c\u7684Xen\u5b58\u5728\u5f71\u5f0f\u5206\u9875\u51b2\u7a81\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u4e0e\u5f71\u5f0f\u5206\u9875\u5173\u8054\u7684\u8054\u5408\u6570\u636e\u7ed3\u6784\u5b58\u5728\u89e3\u91ca\u51b2\u7a81\uff0cx86 PV\u5ba2\u6237\u7aef\u64cd\u4f5c\u7cfb\u7edf\u7528\u6237\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edf\u5d29\u6e83\uff09\u6216\u53ef\u80fd\u83b7\u5f97\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edf\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\u5f71\u5f0f\u5206\u9875\u51b2\u7a81\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Xen Xen \u003c=4.11.x"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-19966",
  "serverity": "\u9ad8",
  "submitTime": "2018-12-10",
  "title": "Xen\u5f71\u5f0f\u5206\u9875\u51b2\u7a81\u6f0f\u6d1e"
}

CVE-2018-19966 (GCVE-0-2018-19966)

Vulnerability from cvelistv5 – Published: 2018-12-08 04:00 – Updated: 2024-08-05 11:51

Summary

An issue was discovered in Xen through 4.11.x allowing x86 PV guest OS users to cause a denial of service (host OS crash) or possibly gain host OS privileges because of an interpretation conflict for a union data structure associated with shadow paging. NOTE: this issue exists because of an incorrect fix for CVE-2017-15595.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

6 references

URL	Tags
https://www.debian.org/security/2019/dsa-4369	vendor-advisoryx_refsource_DEBIAN
https://xenbits.xen.org/xsa/advisory-280.html	x_refsource_MISC
http://www.securityfocus.com/bid/106182	vdb-entryx_refsource_BID
https://lists.fedoraproject.org/archives/list/pac…	vendor-advisoryx_refsource_FEDORA
http://lists.opensuse.org/opensuse-security-annou…	vendor-advisoryx_refsource_SUSE
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST

Date Public

2018-12-07 00:00

Show details on NVD website

JSON

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          },
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            "url": "https://xenbits.xen.org/xsa/advisory-280.html"
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          },
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          },
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            "tags": [
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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-2019-07944

CVE-2018-19966 (GCVE-0-2018-19966)

Tags

Sightings

Nomenclature

Related by attack behaviour