Vulnerability-Lookup

CNVD-2018-04652

Vulnerability from cnvd - Published: 2018-03-08

Title

Xen拒绝服务漏洞（CNVD-2018-04652）

Description

Xen是一个开源虚拟机监视器，由Xen Project开发。 4.10.x及更早版本的Xen存在拒绝服务漏洞。x86 PV客户机操作系统用户可通过非抢占式L3/L4页表释放利用该漏洞导致拒绝服务（主机操作系统CPU挂起）。

Severity

中

Patch Name

Xen拒绝服务漏洞（CNVD-2018-04652）的补丁

Patch Description

Xen是一个开源虚拟机监视器，由Xen Project开发。 4.10.x及更早版本的Xen存在拒绝服务漏洞。x86 PV客户机操作系统用户可通过非抢占式L3/L4页表释放利用该漏洞导致拒绝服务（主机操作系统CPU挂起）。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

厂商已发布漏洞修复程序，请及时关注更新： https://xenbits.xen.org/xsa/advisory-252.html

Reference

https://xenbits.xen.org/xsa/advisory-252.html

Impacted products

Name
Xen Xen <=4.10.x

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-7540"
    }
  },
  "description": "Xen\u662f\u4e00\u4e2a\u5f00\u6e90\u865a\u62df\u673a\u76d1\u89c6\u5668\uff0c\u7531Xen Project\u5f00\u53d1\u3002\r\n\r\n4.10.x\u53ca\u66f4\u65e9\u7248\u672c\u7684Xen\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002x86 PV\u5ba2\u6237\u673a\u64cd\u4f5c\u7cfb\u7edf\u7528\u6237\u53ef\u901a\u8fc7\u975e\u62a2\u5360\u5f0fL3/L4\u9875\u8868\u91ca\u653e\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edfCPU\u6302\u8d77\uff09\u3002",
  "discovererName": "Ian Jackson",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://xenbits.xen.org/xsa/advisory-252.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-04652",
  "openTime": "2018-03-08",
  "patchDescription": "Xen\u662f\u4e00\u4e2a\u5f00\u6e90\u865a\u62df\u673a\u76d1\u89c6\u5668\uff0c\u7531Xen Project\u5f00\u53d1\u3002\r\n\r\n4.10.x\u53ca\u66f4\u65e9\u7248\u672c\u7684Xen\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002x86 PV\u5ba2\u6237\u673a\u64cd\u4f5c\u7cfb\u7edf\u7528\u6237\u53ef\u901a\u8fc7\u975e\u62a2\u5360\u5f0fL3/L4\u9875\u8868\u91ca\u653e\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\uff08\u4e3b\u673a\u64cd\u4f5c\u7cfb\u7edfCPU\u6302\u8d77\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-2018-04652\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Xen Xen \u003c=4.10.x"
  },
  "referenceLink": "https://xenbits.xen.org/xsa/advisory-252.html",
  "serverity": "\u4e2d",
  "submitTime": "2018-02-28",
  "title": "Xen\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-04652\uff09"
}

CVE-2018-7540 (GCVE-0-2018-7540)

Vulnerability from cvelistv5 – Published: 2018-02-27 19:00 – Updated: 2024-08-05 06:31

Summary

An issue was discovered in Xen through 4.10.x allowing x86 PV guest OS users to cause a denial of service (host OS CPU hang) via non-preemptable L3/L4 pagetable freeing.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

9 references

URL	Tags
https://xenbits.xen.org/xsa/advisory-252.html	x_refsource_CONFIRM
https://security.gentoo.org/glsa/201810-06	vendor-advisoryx_refsource_GENTOO
http://www.securitytracker.com/id/1040773	vdb-entryx_refsource_SECTRACK
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2018…	mailing-listx_refsource_MLIST
http://www.securityfocus.com/bid/103174	vdb-entryx_refsource_BID
https://www.debian.org/security/2018/dsa-4131	vendor-advisoryx_refsource_DEBIAN
https://support.citrix.com/article/CTX232655	x_refsource_CONFIRM
https://support.citrix.com/article/CTX232096	x_refsource_CONFIRM

Date Public

2018-02-27 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.