CVE:CVE-2014-7817
CNNVD:CNNVD-201411-413
GNU C Library（glibc，libc6）是一种按照LGPL许可协议发布的开源免费的C语言编译程序。
GNU C Library 2.21版本存在输入验证错误漏洞，该漏洞源于程序没有正确处理WRDE_NOCMD标记。攻击者可利用该漏洞执行任意命令。
solution:Upgrade canonical ubuntu_linux to a higher version than 10.04,12.04,14.04,14.10,and avoid the version 10.04,12.04,14.04,14.10; Upgrade debian debian_linux to a higher version than 7.0,and avoid the version 7.0; Upgrade gnu glibc to a higher version than 2.21,and avoid the version 2.21; Upgrade opensuse opensuse to a higher version than 13.1,13.2,and avoid the version 13.1,13.2