cnvd-2021-16430
Vulnerability from cnvd
Title
Dnsmasq安全特征问题漏洞（CNVD-2021-16430）
Description
Dnsmasq是一款使用C语言编写的轻量级DNS转发和DHCP、TFTP服务器。 Dnsmasq存在安全漏洞，该漏洞源于在没有dnnssec的情况下编译时使用弱哈希算法(CRC32)来验证DNS响应。目前没有详细的漏洞细节提供。
Severity
中
Patch Name
Dnsmasq安全特征问题漏洞（CNVD-2021-16430）的补丁
Patch Description
Dnsmasq是一款使用C语言编写的轻量级DNS转发和DHCP、TFTP服务器。 Dnsmasq存在安全漏洞，该漏洞源于在没有dnnssec的情况下编译时使用弱哈希算法(CRC32)来验证DNS响应。目前没有详细的漏洞细节提供。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.jsof-tech.com/disclosures/dnspooq/

Reference
https://www.jsof-tech.com/disclosures/dnspooq/
Impacted products
Name
Dnsmasq Dnsmasq <2.83
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2020-25685",
      "cveUrl": "https://nvd.nist.gov/vuln/detail/CVE-2020-25685"
    }
  },
  "description": "Dnsmasq\u662f\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u8f7b\u91cf\u7ea7DNS\u8f6c\u53d1\u548cDHCP\u3001TFTP\u670d\u52a1\u5668\u3002\n\nDnsmasq\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u6ca1\u6709dnnssec\u7684\u60c5\u51b5\u4e0b\u7f16\u8bd1\u65f6\u4f7f\u7528\u5f31\u54c8\u5e0c\u7b97\u6cd5(CRC32)\u6765\u9a8c\u8bc1DNS\u54cd\u5e94\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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.jsof-tech.com/disclosures/dnspooq/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2021-16430",
  "openTime": "2021-03-11",
  "patchDescription": "Dnsmasq\u662f\u4e00\u6b3e\u4f7f\u7528C\u8bed\u8a00\u7f16\u5199\u7684\u8f7b\u91cf\u7ea7DNS\u8f6c\u53d1\u548cDHCP\u3001TFTP\u670d\u52a1\u5668\u3002\r\n\r\nDnsmasq\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u5728\u6ca1\u6709dnnssec\u7684\u60c5\u51b5\u4e0b\u7f16\u8bd1\u65f6\u4f7f\u7528\u5f31\u54c8\u5e0c\u7b97\u6cd5(CRC32)\u6765\u9a8c\u8bc1DNS\u54cd\u5e94\u3002\u76ee\u524d\u6ca1\u6709\u8be6\u7ec6\u7684\u6f0f\u6d1e\u7ec6\u8282\u63d0\u4f9b\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": "Dnsmasq\u5b89\u5168\u7279\u5f81\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-16430\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Dnsmasq Dnsmasq \u003c2.83"
  },
  "referenceLink": "https://www.jsof-tech.com/disclosures/dnspooq/",
  "serverity": "\u4e2d",
  "submitTime": "2021-01-25",
  "title": "Dnsmasq\u5b89\u5168\u7279\u5f81\u95ee\u9898\u6f0f\u6d1e\uff08CNVD-2021-16430\uff09"
}


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