cnvd-2017-32852
Vulnerability from cnvd

Title: systemd拒绝服务漏洞

Description:

systemd是一个用于Linux操作系统的系统和服务管理器。

systemd 223-235存在拒绝服务漏洞。该漏洞产生的原因是远程DNS服务器可以用定制的DNS NSEC资源记录进行响应,这会触发'systemd-resolved'服务的dns_packet_read_type_window()函数发生无限循环,攻击者可利用该漏洞导致拒绝服务。

Severity:

Patch Name: systemd拒绝服务漏洞的补丁

Patch Description:

systemd是一个用于Linux操作系统的系统和服务管理器。

systemd 223-235存在拒绝服务漏洞。该漏洞产生的原因是远程DNS服务器可以用定制的DNS NSEC资源记录进行响应,这会触发'systemd-resolved'服务的dns_packet_read_type_window()函数发生无限循环,攻击者可利用该漏洞导致拒绝服务。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:

厂商已发布漏洞修复程序,请及时关注更新: https://github.com/systemd/systemd/pull/7184

Reference: https://nvd.nist.gov/vuln/detail/CVE-2017-15908

Impacted products
Name
systemd systemd 223-235
Show details on source website


{
  "bids": {
    "bid": {
      "bidNumber": "101600"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-15908"
    }
  },
  "description": "systemd\u662f\u4e00\u4e2a\u7528\u4e8eLinux\u64cd\u4f5c\u7cfb\u7edf\u7684\u7cfb\u7edf\u548c\u670d\u52a1\u7ba1\u7406\u5668\u3002\r\n\r\nsystemd 223-235\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662f\u8fdc\u7a0bDNS\u670d\u52a1\u5668\u53ef\u4ee5\u7528\u5b9a\u5236\u7684DNS NSEC\u8d44\u6e90\u8bb0\u5f55\u8fdb\u884c\u54cd\u5e94\uff0c\u8fd9\u4f1a\u89e6\u53d1\u0027systemd-resolved\u0027\u670d\u52a1\u7684dns_packet_read_type_window()\u51fd\u6570\u53d1\u751f\u65e0\u9650\u5faa\u73af\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\u62d2\u7edd\u670d\u52a1\u3002",
  "discovererName": "systemd",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://github.com/systemd/systemd/pull/7184",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-32852",
  "openTime": "2017-11-06",
  "patchDescription": "systemd\u662f\u4e00\u4e2a\u7528\u4e8eLinux\u64cd\u4f5c\u7cfb\u7edf\u7684\u7cfb\u7edf\u548c\u670d\u52a1\u7ba1\u7406\u5668\u3002\r\n\r\nsystemd 223-235\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662f\u8fdc\u7a0bDNS\u670d\u52a1\u5668\u53ef\u4ee5\u7528\u5b9a\u5236\u7684DNS NSEC\u8d44\u6e90\u8bb0\u5f55\u8fdb\u884c\u54cd\u5e94\uff0c\u8fd9\u4f1a\u89e6\u53d1\u0027systemd-resolved\u0027\u670d\u52a1\u7684dns_packet_read_type_window()\u51fd\u6570\u53d1\u751f\u65e0\u9650\u5faa\u73af\uff0c\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u5bfc\u81f4\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": "systemd\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "systemd systemd 223-235"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-15908",
  "serverity": "\u4e2d",
  "submitTime": "2017-10-27",
  "title": "systemd\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}


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