cnvd-2018-09978
Vulnerability from cnvd
Title
Ruby String#unpack方法信息泄露漏洞
Description
Ruby是日本软件开发者松本行弘所研发的一种跨平台、面向对象的动态类型编程语言。 Ruby中的String#unpack方法存在信息泄露漏洞，该漏洞源于程序未能正确的处理‘@’格式区分符。远程攻击者可通过发送请求，提交恶意输入利用该漏洞访问敏感信息。
Severity
中
Patch Name
Ruby String#unpack方法信息泄露漏洞的补丁
Patch Description
Ruby是日本软件开发者松本行弘所研发的一种跨平台、面向对象的动态类型编程语言。 Ruby中的String#unpack方法存在信息泄露漏洞，该漏洞源于程序未能正确的处理‘@’格式区分符。远程攻击者可通过发送请求，提交恶意输入利用该漏洞访问敏感信息。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

目前厂商已发布升级补丁以修复漏洞，补丁获取链接： https://www.ruby-lang.org/en/news/2018/03/28/buffer-under-read-unpack-cve-2018-8778/

Reference
https://www.ruby-lang.org/en/news/2018/03/28/buffer-under-read-unpack-cve-2018-8778/
Impacted products
Name
['Ruby Ruby <2.2.10', 'Ruby Ruby 2.3.*;<2.3.7', 'Ruby Ruby 2.4.*;<2.4.4', 'Ruby Ruby 2.5.*;<2.5.1', 'Ruby Ruby <2.6.0-preview1']
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{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2018-8778",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8778"
    }
  },
  "description": "Ruby\u662f\u65e5\u672c\u8f6f\u4ef6\u5f00\u53d1\u8005\u677e\u672c\u884c\u5f18\u6240\u7814\u53d1\u7684\u4e00\u79cd\u8de8\u5e73\u53f0\u3001\u9762\u5411\u5bf9\u8c61\u7684\u52a8\u6001\u7c7b\u578b\u7f16\u7a0b\u8bed\u8a00\u3002\r\n\r\nRuby\u4e2d\u7684String#unpack\u65b9\u6cd5\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5904\u7406\u2018@\u2019\u683c\u5f0f\u533a\u5206\u7b26\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u8bf7\u6c42\uff0c\u63d0\u4ea4\u6076\u610f\u8f93\u5165\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u654f\u611f\u4fe1\u606f\u3002",
  "discovererName": "aerodudrizzt",
  "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\nhttps://www.ruby-lang.org/en/news/2018/03/28/buffer-under-read-unpack-cve-2018-8778/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-09978",
  "openTime": "2018-05-22",
  "patchDescription": "Ruby\u662f\u65e5\u672c\u8f6f\u4ef6\u5f00\u53d1\u8005\u677e\u672c\u884c\u5f18\u6240\u7814\u53d1\u7684\u4e00\u79cd\u8de8\u5e73\u53f0\u3001\u9762\u5411\u5bf9\u8c61\u7684\u52a8\u6001\u7c7b\u578b\u7f16\u7a0b\u8bed\u8a00\u3002\r\n\r\nRuby\u4e2d\u7684String#unpack\u65b9\u6cd5\u5b58\u5728\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5904\u7406\u2018@\u2019\u683c\u5f0f\u533a\u5206\u7b26\u3002\u8fdc\u7a0b\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u53d1\u9001\u8bf7\u6c42\uff0c\u63d0\u4ea4\u6076\u610f\u8f93\u5165\u5229\u7528\u8be5\u6f0f\u6d1e\u8bbf\u95ee\u654f\u611f\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": "Ruby String#unpack\u65b9\u6cd5\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Ruby Ruby \u003c2.2.10",
      "Ruby Ruby 2.3.*;\u003c2.3.7",
      "Ruby Ruby 2.4.*;\u003c2.4.4",
      "Ruby Ruby 2.5.*;\u003c2.5.1",
      "Ruby Ruby \u003c2.6.0-preview1"
    ]
  },
  "referenceLink": "https://www.ruby-lang.org/en/news/2018/03/28/buffer-under-read-unpack-cve-2018-8778/",
  "serverity": "\u4e2d",
  "submitTime": "2018-04-24",
  "title": "Ruby String#unpack\u65b9\u6cd5\u4fe1\u606f\u6cc4\u9732\u6f0f\u6d1e"
}


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