Vulnerability-Lookup

CNVD-2018-24546

Vulnerability from cnvd - Published: 2018-12-04

Title

Linux kernel拒绝服务漏洞（CNVD-2018-24546）

Description

Linux kernel是美国Linux基金会发布的开源操作系统Linux所使用的内核。 Linux kernel 4.18.1及之前版本中的drivers/net/xen-netback/hash.c文件的‘xenvif_set_hash_mapping’函数存在安全漏洞，该漏洞源于程序未能进行输入验证或输入验证出错。攻击者可利用该漏洞造成后端越界访问内存，可能提升权限，造成拒绝服务或泄露信息。

Severity

中

Patch Name

Linux kernel拒绝服务漏洞（CNVD-2018-24546）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： http://xenbits.xen.org/xsa/advisory-270.html

Reference

http://xenbits.xen.org/xsa/advisory-270.html

Impacted products

Name
Linux Kernel <=4.18.1

Show details on source website

JSON

To clipboard

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-15471",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-15471"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\n\nLinux kernel 4.18.1\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684drivers/net/xen-netback/hash.c\u6587\u4ef6\u7684\u2018xenvif_set_hash_mapping\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u8fdb\u884c\u8f93\u5165\u9a8c\u8bc1\u6216\u8f93\u5165\u9a8c\u8bc1\u51fa\u9519\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u540e\u7aef\u8d8a\u754c\u8bbf\u95ee\u5185\u5b58\uff0c\u53ef\u80fd\u63d0\u5347\u6743\u9650\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\u6216\u6cc4\u9732\u4fe1\u606f\u3002",
  "discovererName": "unknown",
  "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\nhttp://xenbits.xen.org/xsa/advisory-270.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-24546",
  "openTime": "2018-12-04",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u5f00\u6e90\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.18.1\u53ca\u4e4b\u524d\u7248\u672c\u4e2d\u7684drivers/net/xen-netback/hash.c\u6587\u4ef6\u7684\u2018xenvif_set_hash_mapping\u2019\u51fd\u6570\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u8fdb\u884c\u8f93\u5165\u9a8c\u8bc1\u6216\u8f93\u5165\u9a8c\u8bc1\u51fa\u9519\u3002\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u540e\u7aef\u8d8a\u754c\u8bbf\u95ee\u5185\u5b58\uff0c\u53ef\u80fd\u63d0\u5347\u6743\u9650\uff0c\u9020\u6210\u62d2\u7edd\u670d\u52a1\u6216\u6cc4\u9732\u4fe1\u606f\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-2018-24546\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel \u003c=4.18.1"
  },
  "referenceLink": "http://xenbits.xen.org/xsa/advisory-270.html",
  "serverity": "\u4e2d",
  "submitTime": "2018-08-21",
  "title": "Linux kernel\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2018-24546\uff09"
}

CVE-2018-15471 (GCVE-0-2018-15471)

Vulnerability from cvelistv5 – Published: 2018-08-17 17:00 – Updated: 2024-08-05 09:54

Summary

An issue was discovered in xenvif_set_hash_mapping in drivers/net/xen-netback/hash.c in the Linux kernel through 4.18.1, as used in Xen through 4.11.x and other products. The Linux netback driver allows frontends to control mapping of requests to request queues. When processing a request to set or change this mapping, some input validation (e.g., for an integer overflow) was missing or flawed, leading to OOB access in hash handling. A malicious or buggy frontend may cause the (usually privileged) backend to make out of bounds memory accesses, potentially resulting in one or more of privilege escalation, Denial of Service (DoS), or information leaks.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root

References

8 references

URL	Tags
https://usn.ubuntu.com/3820-1/	vendor-advisoryx_refsource_UBUNTU
http://xenbits.xen.org/xsa/advisory-270.html	x_refsource_MISC
https://usn.ubuntu.com/3820-2/	vendor-advisoryx_refsource_UBUNTU
https://bugs.chromium.org/p/project-zero/issues/d…	x_refsource_MISC
https://www.debian.org/security/2018/dsa-4313	vendor-advisoryx_refsource_DEBIAN
https://lists.debian.org/debian-lts-announce/2019…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3819-1/	vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3820-3/	vendor-advisoryx_refsource_UBUNTU

Date Public

2018-08-17 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.