cnvd-2018-00646
Vulnerability from cnvd
Title
GNU C Library权限提升漏洞
Description
GNU C Library是一种按照LGPL许可协议发布的、开源、免费、方便从网络下载的C的编译程序。 GNU C Library存在权限提升漏洞。该漏洞产生的原因是GNU C Library中的elf/dl-load.c未能正确处理特权（setuid或AT_SECURE）程序的包含$ORIGIN的RPATH和RUNPATH。攻击者可通过当前工作目录中的特洛伊木马程序库利用该漏洞获得特权。
Severity
高
Patch Name
GNU C Library权限提升漏洞的补丁
Patch Description
GNU C Library是一种按照LGPL许可协议发布的、开源、免费、方便从网络下载的C的编译程序。 GNU C Library存在权限提升漏洞。该漏洞产生的原因是GNU C Library中的elf/dl-load.c未能正确处理特权（setuid或AT_SECURE）程序的包含$ORIGIN的RPATH和RUNPATH。攻击者可通过当前工作目录中的特洛伊木马程序库利用该漏洞获得特权。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://sourceware.org/ml/libc-alpha/2017-12/msg00528.html

Reference
https://nvd.nist.gov/vuln/detail/CVE-2017-16997
Impacted products
Name
GNU C Library >=2.19，<=2.26
Show details on source website

To clipboard 

{
  "bids": {
    "bid": {
      "bidNumber": "102228"
    }
  },
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-16997"
    }
  },
  "description": "GNU C Library\u662f\u4e00\u79cd\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u3001\u5f00\u6e90\u3001\u514d\u8d39\u3001\u65b9\u4fbf\u4ece\u7f51\u7edc\u4e0b\u8f7d\u7684C\u7684\u7f16\u8bd1\u7a0b\u5e8f\u3002\r\n\r\nGNU C Library\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fGNU C Library\u4e2d\u7684elf/dl-load.c\u672a\u80fd\u6b63\u786e\u5904\u7406\u7279\u6743\uff08setuid\u6216AT_SECURE\uff09\u7a0b\u5e8f\u7684\u5305\u542b$ORIGIN\u7684RPATH\u548cRUNPATH\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55\u4e2d\u7684\u7279\u6d1b\u4f0a\u6728\u9a6c\u7a0b\u5e8f\u5e93\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u5f97\u7279\u6743\u3002",
  "discovererName": "Aurelien Jarno",
  "formalWay": "\u5382\u5546\u5df2\u53d1\u5e03\u6f0f\u6d1e\u4fee\u590d\u7a0b\u5e8f\uff0c\u8bf7\u53ca\u65f6\u5173\u6ce8\u66f4\u65b0\uff1a\r\nhttps://sourceware.org/ml/libc-alpha/2017-12/msg00528.html",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2018-00646",
  "openTime": "2018-01-10",
  "patchDescription": "GNU C Library\u662f\u4e00\u79cd\u6309\u7167LGPL\u8bb8\u53ef\u534f\u8bae\u53d1\u5e03\u7684\u3001\u5f00\u6e90\u3001\u514d\u8d39\u3001\u65b9\u4fbf\u4ece\u7f51\u7edc\u4e0b\u8f7d\u7684C\u7684\u7f16\u8bd1\u7a0b\u5e8f\u3002\r\n\r\nGNU C Library\u5b58\u5728\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u3002\u8be5\u6f0f\u6d1e\u4ea7\u751f\u7684\u539f\u56e0\u662fGNU C Library\u4e2d\u7684elf/dl-load.c\u672a\u80fd\u6b63\u786e\u5904\u7406\u7279\u6743\uff08setuid\u6216AT_SECURE\uff09\u7a0b\u5e8f\u7684\u5305\u542b$ORIGIN\u7684RPATH\u548cRUNPATH\u3002\u653b\u51fb\u8005\u53ef\u901a\u8fc7\u5f53\u524d\u5de5\u4f5c\u76ee\u5f55\u4e2d\u7684\u7279\u6d1b\u4f0a\u6728\u9a6c\u7a0b\u5e8f\u5e93\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u5f97\u7279\u6743\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": "GNU C Library\u6743\u9650\u63d0\u5347\u6f0f\u6d1e\u7684\u8865\u4e01",
  "products": {
    "product": "GNU C Library \u003e=2.19\uff0c\u003c=2.26"
  },
  "referenceLink": "https://nvd.nist.gov/vuln/detail/CVE-2017-16997",
  "serverity": "\u9ad8",
  "submitTime": "2017-12-18",
  "title": "GNU C Library\u6743\u9650\u63d0\u5347\u6f0f\u6d1e"
}


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