Vulnerability-Lookup

CNVD-2020-41523

Vulnerability from cnvd - Published: 2020-07-22

Title

rack-cors gem for Ruby目录遍历漏洞

Description

rack-cors是用于处理跨域资源共享（CORS）的Rack中间件。 rack-cors gem for Ruby 1.0.4之前版本中存在目录遍历漏洞，该漏洞源于资源匹配未能确保路径名采用规范格式，攻击者可利用该漏洞访问私有资源。

Severity

中

Patch Name

rack-cors gem for Ruby目录遍历漏洞的补丁

Patch Description

rack-cors是用于处理跨域资源共享（CORS）的Rack中间件。 rack-cors gem for Ruby 1.0.4之前版本中存在目录遍历漏洞，该漏洞源于资源匹配未能确保路径名采用规范格式，攻击者可利用该漏洞访问私有资源。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://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d

Reference

https://nvd.nist.gov/vuln/detail/CVE-2019-18978

Impacted products

Name
Rack-cors rack-cors gem for Ruby <1.0.4

Show details on source website

JSON

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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2019-18978",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2019-18978"
    }
  },
  "description": "rack-cors\u662f\u7528\u4e8e\u5904\u7406\u8de8\u57df\u8d44\u6e90\u5171\u4eab\uff08CORS\uff09\u7684Rack\u4e2d\u95f4\u4ef6\u3002\n\nrack-cors gem for Ruby 1.0.4\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8d44\u6e90\u5339\u914d\u672a\u80fd\u786e\u4fdd\u8def\u5f84\u540d\u91c7\u7528\u89c4\u8303\u683c\u5f0f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u79c1\u6709\u8d44\u6e90\u3002",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u4e86\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2020-41523",
  "openTime": "2020-07-22",
  "patchDescription": "rack-cors\u662f\u7528\u4e8e\u5904\u7406\u8de8\u57df\u8d44\u6e90\u5171\u4eab\uff08CORS\uff09\u7684Rack\u4e2d\u95f4\u4ef6\u3002\r\n\r\nrack-cors gem for Ruby 1.0.4\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u8d44\u6e90\u5339\u914d\u672a\u80fd\u786e\u4fdd\u8def\u5f84\u540d\u91c7\u7528\u89c4\u8303\u683c\u5f0f\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u79c1\u6709\u8d44\u6e90\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": "rack-cors gem for Ruby\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "Rack-cors rack-cors gem for Ruby \u003c1.0.4"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2019-18978",
  "serverity": "\u4e2d",
  "submitTime": "2019-11-15",
  "title": "rack-cors gem for Ruby\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e"
}

CVE-2019-18978 (GCVE-0-2019-18978)

Vulnerability from cvelistv5 – Published: 2019-11-14 20:21 – Updated: 2024-08-05 02:02

Summary

An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1.0.4 for Ruby. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.

Severity

No CVSS data available.

CWE

Assigner

mitre mitre root Scorecard

References

6 references

URL	Tags
https://github.com/cyu/rack-cors/commit/e4d4fc362…	x_refsource_MISC
https://github.com/cyu/rack-cors/compare/v1.0.3..…	x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2020…	mailing-listx_refsource_MLIST
https://usn.ubuntu.com/4571-1/	vendor-advisoryx_refsource_UBUNTU
https://www.debian.org/security/2021/dsa-4918	vendor-advisoryx_refsource_DEBIAN

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

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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.
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Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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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.

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.
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CNVD-2020-41523

CVE-2019-18978 (GCVE-0-2019-18978)

Tags

Sightings

Nomenclature

Related by attack behaviour