Vulnerability-Lookup

CNVD-2017-00769

Vulnerability from cnvd - Published: 2017-01-24

Title

Linux kernel拒绝服务漏洞（CNVD-2017-00769）

Description

Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。 Linux arch/x86/kvm/emulate.c中4.9.3之前版本存在拒绝服务漏洞，允许本地用户从内核中获取敏感信息，或通过一个精心设计的应用程序引发拒绝服务（后自由使用），利用对fxrstor的指令仿真，fxsave，sgdt和sidt。

Severity

低

Patch Name

Linux kernel拒绝服务漏洞（CNVD-2017-00769）的补丁

Patch Description

Formal description

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接： http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74d

Reference

https://github.com/torvalds/linux/commit/129a72a0d3c8e139a04512325384fe5ac119e74d http://www.securityfocus.com/bid/95430

Impacted products

Name
Linux Kernel <4.9.3

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-2584",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-2584"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n                                                                                                 Linux arch/x86/kvm/emulate.c\u4e2d4.9.3\u4e4b\u524d\u7248\u672c\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u5141\u8bb8\u672c\u5730\u7528\u6237\u4ece\u5185\u6838\u4e2d\u83b7\u53d6\u654f\u611f\u4fe1\u606f\uff0c\u6216\u901a\u8fc7\u4e00\u4e2a\u7cbe\u5fc3\u8bbe\u8ba1\u7684\u5e94\u7528\u7a0b\u5e8f\u5f15\u53d1\u62d2\u7edd\u670d\u52a1\uff08\u540e\u81ea\u7531\u4f7f\u7528\uff09\uff0c\u5229\u7528\u5bf9fxrstor\u7684\u6307\u4ee4\u4eff\u771f\uff0cfxsave\uff0csgdt\u548csidt\u3002",
  "discovererName": "Prasad J Pandit",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5\uff1a\r\nhttp://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=129a72a0d3c8e139a04512325384fe5ac119e74d",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-00769",
  "openTime": "2017-01-24",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n                                                                                                 Linux arch/x86/kvm/emulate.c\u4e2d4.9.3\u4e4b\u524d\u7248\u672c\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u5141\u8bb8\u672c\u5730\u7528\u6237\u4ece\u5185\u6838\u4e2d\u83b7\u53d6\u654f\u611f\u4fe1\u606f\uff0c\u6216\u901a\u8fc7\u4e00\u4e2a\u7cbe\u5fc3\u8bbe\u8ba1\u7684\u5e94\u7528\u7a0b\u5e8f\u5f15\u53d1\u62d2\u7edd\u670d\u52a1\uff08\u540e\u81ea\u7531\u4f7f\u7528\uff09\uff0c\u5229\u7528\u5bf9fxrstor\u7684\u6307\u4ee4\u4eff\u771f\uff0cfxsave\uff0csgdt\u548csidt\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": "Linux kernel\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-00769\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c4.9.3"
  },
  "referenceLink": "https://github.com/torvalds/linux/commit/129a72a0d3c8e139a04512325384fe5ac119e74d\r\nhttp://www.securityfocus.com/bid/95430",
  "serverity": "\u4f4e",
  "submitTime": "2017-01-16",
  "title": "Linux kernel\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-00769\uff09"
}

CVE-2017-2584 (GCVE-0-2017-2584)

Vulnerability from cvelistv5 – Published: 2017-01-15 02:00 – Updated: 2024-08-05 13:55

Summary

arch/x86/kvm/emulate.c in the Linux kernel through 4.9.3 allows local users to obtain sensitive information from kernel memory or cause a denial of service (use-after-free) via a crafted application that leverages instruction emulation for fxrstor, fxsave, sgdt, and sidt.

Severity

No CVSS data available.

CWE

Assigner

redhat redhat root

References

8 references

URL	Tags
http://www.securityfocus.com/bid/95430	vdb-entryx_refsource_BID
http://www.securitytracker.com/id/1037603	vdb-entryx_refsource_SECTRACK
https://usn.ubuntu.com/3754-1/	vendor-advisoryx_refsource_UBUNTU
https://github.com/torvalds/linux/commit/129a72a0…	x_refsource_CONFIRM
http://www.debian.org/security/2017/dsa-3791	vendor-advisoryx_refsource_DEBIAN
http://www.openwall.com/lists/oss-security/2017/01/13/7	mailing-listx_refsource_MLIST
http://git.kernel.org/cgit/linux/kernel/git/torva…	x_refsource_CONFIRM
https://bugzilla.redhat.com/show_bug.cgi?id=1413001	x_refsource_CONFIRM

Date Public

2017-01-13 00:00

Show details on NVD website

JSON

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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.