cnvd-2017-30425
Vulnerability from cnvd
Title
libxfont拒绝服务漏洞（CNVD-2017-30425）
Description
libXfont是X.Org基金会的一个用于服务器和实用程序的X字体处理库。 libXfont 1.5.2及之前的版本和2.0.2之前的2.x版本中的bitmap/pcfread.c文件的‘pcfGetProperties’函数存在拒绝服务漏洞，该漏洞源于程序未能对PCF文件执行边界检测。本地攻击者可利用该漏洞获取信息或造成拒绝服务（崩溃）。
Severity
中
Patch Name
libxfont拒绝服务漏洞（CNVD-2017-30425）的补丁
Patch Description
libXfont是X.Org基金会的一个用于服务器和实用程序的X字体处理库。 libXfont 1.5.2及之前的版本和2.0.2之前的2.x版本中的bitmap/pcfread.c文件的‘pcfGetProperties’函数存在拒绝服务漏洞，该漏洞源于程序未能对PCF文件执行边界检测。本地攻击者可利用该漏洞获取信息或造成拒绝服务（崩溃）。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://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=672bb944311392e2415b39c0d63b1e1902905bcd

Reference
http://seclists.org/bugtraq/2017/Oct/18
Impacted products
Name
['Libxfont libXfont <=1.5.2', 'Libxfont libXfont 2.*，<2.0.2']
Show details on source website

To clipboard 

{
  "cves": {
    "cve": {
      "cveNumber": "CVE-2017-13722"
    }
  },
  "description": "libXfont\u662fX.Org\u57fa\u91d1\u4f1a\u7684\u4e00\u4e2a\u7528\u4e8e\u670d\u52a1\u5668\u548c\u5b9e\u7528\u7a0b\u5e8f\u7684X\u5b57\u4f53\u5904\u7406\u5e93\u3002\r\n\r\nlibXfont 1.5.2\u53ca\u4e4b\u524d\u7684\u7248\u672c\u548c2.0.2\u4e4b\u524d\u76842.x\u7248\u672c\u4e2d\u7684bitmap/pcfread.c\u6587\u4ef6\u7684\u2018pcfGetProperties\u2019\u51fd\u6570\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u5bf9PCF\u6587\u4ef6\u6267\u884c\u8fb9\u754c\u68c0\u6d4b\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u4fe1\u606f\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5d29\u6e83\uff09\u3002",
  "discovererName": "Andrej Nemec",
  "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://cgit.freedesktop.org/xorg/lib/libXfont/commit/?id=672bb944311392e2415b39c0d63b1e1902905bcd",
  "isEvent": "\u901a\u7528\u8f6f\u786c\u4ef6\u6f0f\u6d1e",
  "number": "CNVD-2017-30425",
  "openTime": "2017-10-17",
  "patchDescription": "libXfont\u662fX.Org\u57fa\u91d1\u4f1a\u7684\u4e00\u4e2a\u7528\u4e8e\u670d\u52a1\u5668\u548c\u5b9e\u7528\u7a0b\u5e8f\u7684X\u5b57\u4f53\u5904\u7406\u5e93\u3002\r\n\r\nlibXfont 1.5.2\u53ca\u4e4b\u524d\u7684\u7248\u672c\u548c2.0.2\u4e4b\u524d\u76842.x\u7248\u672c\u4e2d\u7684bitmap/pcfread.c\u6587\u4ef6\u7684\u2018pcfGetProperties\u2019\u51fd\u6570\u5b58\u5728\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff0c\u8be5\u6f0f\u6d1e\u6e90\u4e8e\u7a0b\u5e8f\u672a\u80fd\u5bf9PCF\u6587\u4ef6\u6267\u884c\u8fb9\u754c\u68c0\u6d4b\u3002\u672c\u5730\u653b\u51fb\u8005\u53ef\u5229\u7528\u8be5\u6f0f\u6d1e\u83b7\u53d6\u4fe1\u606f\u6216\u9020\u6210\u62d2\u7edd\u670d\u52a1\uff08\u5d29\u6e83\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": "libxfont\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-30425\uff09\u7684\u8865\u4e01",
  "products": {
    "product": [
      "Libxfont libXfont \u003c=1.5.2",
      "Libxfont libXfont 2.*\uff0c\u003c2.0.2"
    ]
  },
  "referenceLink": "http://seclists.org/bugtraq/2017/Oct/18",
  "serverity": "\u4e2d",
  "submitTime": "2017-10-12",
  "title": "libxfont\u62d2\u7edd\u670d\u52a1\u6f0f\u6d1e\uff08CNVD-2017-30425\uff09"
}


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