CNVD-2018-08487

Vulnerability from cnvd - Published: 2018-04-26
VLAI
Title
Ruby目录遍历漏洞
Description
Ruby是一种简单快捷的面向对象（面向对象程序设计）脚本语言。 Ruby存在目录遍历漏洞。该漏洞产生的原因是Dir.open、Dir.new、Dir.entries及Dir.empty?方法未检查空字符。当使用相应方法时，攻击者可利用该漏洞进行目录遍历。
Severity
中
Patch Name
Ruby目录遍历漏洞的补丁
Patch Description
Ruby是一种简单快捷的面向对象（面向对象程序设计）脚本语言。 Ruby存在目录遍历漏洞。该漏洞产生的原因是Dir.open、Dir.new、Dir.entries及Dir.empty?方法未检查空字符。当使用相应方法时，攻击者可利用该漏洞进行目录遍历。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://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/

Reference
https://nvd.nist.gov/vuln/detail/CVE-2018-8780
Impacted products
Name
['Ruby Ruby <2.2.10', 'Ruby Ruby 2.3.x (<2.3.7)', 'Ruby Ruby 2.4.x (<2.4.4)', 'Ruby Ruby 2.5.x (<2.5.1)', 'Ruby Ruby 2.6.0-preview1']
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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-8780"
    }
  },
  "description": "Ruby\u662f\u4e00\u79cd\u7b80\u5355\u5feb\u6377\u7684\u9762\u5411\u5bf9\u8c61\uff08\u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1\uff09\u811a\u672c\u8bed\u8a00\u3002\r\n\r\nRuby\u5b58\u5728\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fDir.open\u3001Dir.new\u3001Dir.entries\u53caDir.empty?\u65b9\u6cd5\u672a\u68c0\u67e5\u7a7a\u5b57\u7b26\u3002\u5f53\u4f7f\u7528\u76f8\u5e94\u65b9\u6cd5\u65f6\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8fdb\u884c\u76ee\u5f55\u904d\u5386\u3002",
  "discovererName": "ooooooo_q",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://www.ruby-lang.org/en/news/2018/03/28/ruby-2-2-10-released/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-08487",
  "openTime": "2018-04-26",
  "patchDescription": "Ruby\u662f\u4e00\u79cd\u7b80\u5355\u5feb\u6377\u7684\u9762\u5411\u5bf9\u8c61\uff08\u9762\u5411\u5bf9\u8c61\u7a0b\u5e8f\u8bbe\u8ba1\uff09\u811a\u672c\u8bed\u8a00\u3002\r\n\r\nRuby\u5b58\u5728\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fDir.open\u3001Dir.new\u3001Dir.entries\u53caDir.empty?\u65b9\u6cd5\u672a\u68c0\u67e5\u7a7a\u5b57\u7b26\u3002\u5f53\u4f7f\u7528\u76f8\u5e94\u65b9\u6cd5\u65f6\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u8fdb\u884c\u76ee\u5f55\u904d\u5386\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": "Ruby\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Ruby Ruby \u003c2.2.10",
      "Ruby Ruby 2.3.x (\u003c2.3.7)",
      "Ruby Ruby 2.4.x (\u003c2.4.4)",
      "Ruby Ruby 2.5.x (\u003c2.5.1)",
      "Ruby Ruby 2.6.0-preview1"
    ]
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2018-8780",
  "serverity": "\u4e2d",
  "submitTime": "2018-04-04",
  "title": "Ruby\u76ee\u5f55\u904d\u5386\u6f0f\u6d1e"
}



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Sightings

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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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  • 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.



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.