cnvd-2017-05409
Vulnerability from cnvd
Title
Linux kernel本地拒绝服务漏洞（CNVD-2017-05409）
Description
Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。 Linux kernel 4.11.x版本至4.11-rc7版本的net/sched/act_api.c文件的packet action API实现过程的cookie功能存在安全漏洞，由于程序未能正确的处理tb nlattr数组。本地攻击者可借助tc filter add命令利用该漏洞造成拒绝服务（未初始化的内存访问和系统崩溃或挂起）。
Severity
高
Patch Name
Linux kernel本地拒绝服务漏洞（CNVD-2017-05409）的补丁
Patch Description
Linux kernel是美国Linux基金会发布的操作系统Linux所使用的内核。 Linux kernel 4.11.x版本至4.11-rc7版本的net/sched/act_api.c文件的packet action API实现过程的cookie功能存在安全漏洞，由于程序未能正确的处理tb nlattr数组。本地攻击者可借助tc filter add命令利用该漏洞造成拒绝服务（未初始化的内存访问和系统崩溃或挂起）。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

目前厂商已经发布了升级补丁以修复此安全问题，补丁获取链接: https://www.kernel.org/

Reference
http://marc.info/?l=linux-netdev&m=149200742616349 http://seclists.org/oss-sec/2017/q2/98
Impacted products
Name
Linux Kernel 4.11.x，<=4.11-rc7
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-7979"
    }
  },
  "description": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.11.x\u7248\u672c\u81f34.11-rc7\u7248\u672c\u7684net/sched/act_api.c\u6587\u4ef6\u7684packet action API\u5b9e\u73b0\u8fc7\u7a0b\u7684cookie\u529f\u80fd\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u7531\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5904\u7406tb nlattr\u6570\u7ec4\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u501f\u52a9tc filter add\u547d\u4ee4\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u672a\u521d\u59cb\u5316\u7684\u5185\u5b58\u8bbf\u95ee\u548c\u7cfb\u7edf\u5d29\u6e83\u6216\u6302\u8d77\uff09\u3002",
  "discovererName": "unknown",
  "formalWay": "\u76ee\u524d\u5382\u5546\u5df2\u7ecf\u53d1\u5e03\u4e86\u5347\u7ea7\u8865\u4e01\u4ee5\u4fee\u590d\u6b64\u5b89\u5168\u95ee\u9898\uff0c\u8865\u4e01\u83b7\u53d6\u94fe\u63a5:\r\nhttps://www.kernel.org/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-05409",
  "openTime": "2017-04-26",
  "patchDescription": "Linux kernel\u662f\u7f8e\u56fdLinux\u57fa\u91d1\u4f1a\u53d1\u5e03\u7684\u64cd\u4f5c\u7cfb\u7edfLinux\u6240\u4f7f\u7528\u7684\u5185\u6838\u3002\r\n\r\nLinux kernel 4.11.x\u7248\u672c\u81f34.11-rc7\u7248\u672c\u7684net/sched/act_api.c\u6587\u4ef6\u7684packet action API\u5b9e\u73b0\u8fc7\u7a0b\u7684cookie\u529f\u80fd\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u7531\u4e8e\u7a0b\u5e8f\u672a\u80fd\u6b63\u786e\u7684\u5904\u7406tb nlattr\u6570\u7ec4\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u501f\u52a9tc filter add\u547d\u4ee4\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u672a\u521d\u59cb\u5316\u7684\u5185\u5b58\u8bbf\u95ee\u548c\u7cfb\u7edf\u5d29\u6e83\u6216\u6302\u8d77\uff09\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": "Linux kernel\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-05409\uff09\u7684\u8865\u4e01",
  "products": {
    "product": "Linux Kernel 4.11.x\uff0c\u003c=4.11-rc7"
  },
  "referenceLink": "http://marc.info/?l=linux-netdev\u0026amp;amp;m=149200742616349\r\nhttp://seclists.org/oss-sec/2017/q2/98",
  "serverity": "\u9ad8",
  "submitTime": "2017-04-21",
  "title": "Linux kernel\u672c\u5730\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-05409\uff09"
}


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