CVE:CVE-2005-2218
CNNVD:CNNVD-200507-262
FreeBSD就是一种运行在Intel平台上、可以自由使用的Unix系统。
由于在创建设备时没有充分检查节点类型的参数，导致访问控制被绕过漏洞。这个漏洞使devfs加载的隐藏设备对攻击者可用，导致攻击者能从被限制权限的进程绕过访问控制规则，从而提升权限。
solution:Upgrade freebsd freebsd to a higher version than 5.0,5.0:alpha,5.0:release_p14,5.0:releng,5.1,5.1:alpha,5.1:release,5.1:release_p5,5.1:releng,5.2,5.2.1,5.2.1:release,5.2.1:releng,5.3,5.3:release,5.3:releng,5.3:stable,5.4,5.4:pre-release,5.4:release,5.4:releng,and avoid the version 5.0,5.0:alpha,5.0:release_p14,5.0:releng,5.1,5.1:alpha,5.1:release,5.1:release_p5,5.1:releng,5.2,5.2.1,5.2.1:release,5.2.1:releng,5.3,5.3:release,5.3:releng,5.3:stable,5.4,5.4:pre-release,5.4:release,5.4:releng