cnvd-2021-29846
Vulnerability from cnvd
Title
Knot Resolver资源管理错误漏洞
Description
Knot Resolver是捷克共和国CZ.NIC协会的一款使用C语言和LuaJIT编写的开源缓存DNS解析器。 Knot Resolver 5.1.1之前版本中存在资源管理错误漏洞。攻击者可借助特制DNS响应利用该漏洞造成拒绝服务。
Severity
中
Patch Name
Knot Resolver资源管理错误漏洞的补丁
Patch Description
Knot Resolver是捷克共和国CZ.NIC协会的一款使用C语言和LuaJIT编写的开源缓存DNS解析器。 Knot Resolver 5.1.1之前版本中存在资源管理错误漏洞。攻击者可借助特制DNS响应利用该漏洞造成拒绝服务。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.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html

Reference
https://nvd.nist.gov/vuln/detail/CVE-2020-12667
Impacted products
Name
CZ.NIC Knot Resolver <5.1.1
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-12667"
    }
  },
  "description": "Knot Resolver\u662f\u6377\u514b\u5171\u548c\u56fdCZ.NIC\u534f\u4f1a\u7684\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u548cLuaJIT\u7f16\u5199\u7684\u5f00\u6e90\u7f13\u5b58DNS\u89e3\u6790\u5668\u3002\n\nKnot Resolver 5.1.1\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236DNS\u54cd\u5e94\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\u3002",
  "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.knot-resolver.cz/2020-05-19-knot-resolver-5.1.1.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-29846",
  "openTime": "2021-04-21",
  "patchDescription": "Knot Resolver\u662f\u6377\u514b\u5171\u548c\u56fdCZ.NIC\u534f\u4f1a\u7684\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u548cLuaJIT\u7f16\u5199\u7684\u5f00\u6e90\u7f13\u5b58DNS\u89e3\u6790\u5668\u3002\r\n\r\nKnot Resolver 5.1.1\u4e4b\u524d\u7248\u672c\u4e2d\u5b58\u5728\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u3002\u653b\u51fb\u8005\u53ef\u501f\u52a9\u7279\u5236DNS\u54cd\u5e94\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\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": "Knot Resolver\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "CZ.NIC Knot Resolver \u003c5.1.1"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2020-12667",
  "serverity": "\u4e2d",
  "submitTime": "2020-05-20",
  "title": "Knot Resolver\u8d44\u6e90\u7ba1\u7406\u9519\u8bef\u6f0f\u6d1e"
}


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