cnvd-2017-08793
Vulnerability from cnvd

Title: rpcbind、LIBTIRPC和NTIRPC拒绝服务漏洞

Description:

rpcbind、LIBTIRPC和NTIRPC都是应用在Linux中的应用程序。rpcbind是一个将RPC程序编号转换为通用地址的服务器；LIBTIRPC是一个包含支持使用远程过程调用（RPC）API的程序的库的软件包；NTIRPC是一个用于nfs-ganesha的运输的独立RPC库。

rpcbind、LIBTIRPC和NTIRPC中存在安全漏洞，由于程序在为XDR字符串分配内存时，未能确定最大RPC数据的大小。攻击者可通过向111端口发送特制的UDP数据包利用该漏洞造成拒绝服务（内存消耗）。

Severity: 高

Patch Name: rpcbind、LIBTIRPC和NTIRPC拒绝服务漏洞的补丁

Patch Description:

rpcbind、LIBTIRPC和NTIRPC都是应用在Linux中的应用程序。rpcbind是一个将RPC程序编号转换为通用地址的服务器；LIBTIRPC是一个包含支持使用远程过程调用（RPC）API的程序的库的软件包；NTIRPC是一个用于nfs-ganesha的运输的独立RPC库。

rpcbind、LIBTIRPC和NTIRPC中存在安全漏洞，由于程序在为XDR字符串分配内存时，未能确定最大RPC数据的大小。攻击者可通过向111端口发送特制的UDP数据包利用该漏洞造成拒绝服务（内存消耗）。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:

用户可参考如下厂商提供的安全补丁以修复该漏洞: https://github.com/guidovranken/rpcbomb/

Reference: http://openwall.com/lists/oss-security/2017/05/03/12 https://nvd.nist.gov/vuln/detail/CVE-2017-8779 http://www.securityfocus.com/bid/98325

Impacted products
Name
['RPCBind rpcbind <=0.2.4', 'libtirpc libtirpc <=1.0.1', 'libtirpc libtirpc >=1.0.2-rc，<=1.0.2-rc3', 'NTIRPC NTIRPC <=1.4.3']
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{
  "bids": {
    "bid": {
      "bidNumber": "98325"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-8779",
      "cveUrl": "http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-8779"
    }
  },
  "description": "rpcbind\u3001LIBTIRPC\u548cNTIRPC\u90fd\u662f\u5e94\u7528\u5728Linux\u4e2d\u7684\u5e94\u7528\u7a0b\u5e8f\u3002rpcbind\u662f\u4e00\u4e2a\u5c06RPC\u7a0b\u5e8f\u7f16\u53f7\u8f6c\u6362\u4e3a\u901a\u7528\u5730\u5740\u7684\u670d\u52a1\u5668\uff1bLIBTIRPC\u662f\u4e00\u4e2a\u5305\u542b\u652f\u6301\u4f7f\u7528\u8fdc\u7a0b\u8fc7\u7a0b\u8c03\u7528\uff08RPC\uff09API\u7684\u7a0b\u5e8f\u7684\u5e93\u7684\u8f6f\u4ef6\u5305\uff1bNTIRPC\u662f\u4e00\u4e2a\u7528\u4e8enfs-ganesha\u7684\u8fd0\u8f93\u7684\u72ec\u7acbRPC\u5e93\u3002\r\n\r\nrpcbind\u3001LIBTIRPC\u548cNTIRPC\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u7531\u4e8e\u7a0b\u5e8f\u5728\u4e3aXDR\u5b57\u7b26\u4e32\u5206\u914d\u5185\u5b58\u65f6\uff0c\u672a\u80fd\u786e\u5b9a\u6700\u5927RPC\u6570\u636e\u7684\u5927\u5c0f\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411111\u7aef\u53e3\u53d1\u9001\u7279\u5236\u7684UDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5185\u5b58\u6d88\u8017\uff09\u3002",
  "discovererName": "Guido Vranken",
  "formalWay": "\u7528\u6237\u53ef\u53c2\u8003\u5982\u4e0b\u5382\u5546\u63d0\u4f9b\u7684\u5b89\u5168\u8865\u4e01\u4ee5\u4fee\u590d\u8be5\u6f0f\u6d1e:\r\nhttps://github.com/guidovranken/rpcbomb/",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-08793",
  "openTime": "2017-06-08",
  "patchDescription": "rpcbind\u3001LIBTIRPC\u548cNTIRPC\u90fd\u662f\u5e94\u7528\u5728Linux\u4e2d\u7684\u5e94\u7528\u7a0b\u5e8f\u3002rpcbind\u662f\u4e00\u4e2a\u5c06RPC\u7a0b\u5e8f\u7f16\u53f7\u8f6c\u6362\u4e3a\u901a\u7528\u5730\u5740\u7684\u670d\u52a1\u5668\uff1bLIBTIRPC\u662f\u4e00\u4e2a\u5305\u542b\u652f\u6301\u4f7f\u7528\u8fdc\u7a0b\u8fc7\u7a0b\u8c03\u7528\uff08RPC\uff09API\u7684\u7a0b\u5e8f\u7684\u5e93\u7684\u8f6f\u4ef6\u5305\uff1bNTIRPC\u662f\u4e00\u4e2a\u7528\u4e8enfs-ganesha\u7684\u8fd0\u8f93\u7684\u72ec\u7acbRPC\u5e93\u3002\r\n\r\nrpcbind\u3001LIBTIRPC\u548cNTIRPC\u4e2d\u5b58\u5728\u5b89\u5168\u6f0f\u6d1e\uff0c\u7531\u4e8e\u7a0b\u5e8f\u5728\u4e3aXDR\u5b57\u7b26\u4e32\u5206\u914d\u5185\u5b58\u65f6\uff0c\u672a\u80fd\u786e\u5b9a\u6700\u5927RPC\u6570\u636e\u7684\u5927\u5c0f\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5411111\u7aef\u53e3\u53d1\u9001\u7279\u5236\u7684UDP\u6570\u636e\u5305\u5229\u7528\u8be5\u6f0f\u6d1e\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5185\u5b58\u6d88\u8017\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": "rpcbind\u3001LIBTIRPC\u548cNTIRPC\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": [
      "RPCBind rpcbind \u003c=0.2.4",
      "libtirpc libtirpc \u003c=1.0.1",
      "libtirpc libtirpc \u003e=1.0.2-rc\uff0c\u003c=1.0.2-rc3",
      "NTIRPC NTIRPC \u003c=1.4.3"
    ]
  },
  "referenceLink": "http://openwall.com/lists/oss-security/2017/05/03/12\r\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-8779\r\nhttp://www.securityfocus.com/bid/98325",
  "serverity": "\u9ad8",
  "submitTime": "2017-05-08",
  "title": "rpcbind\u3001LIBTIRPC\u548cNTIRPC\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e"
}


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