CVE:CVE-2011-4613
CNNVD:CNNVD-201112-280
X.Org X Server是X.Org（X.org）基金会的一款X Window系统显示服务器。
X.Org X wrapper (xserver-wrapper.c)在Debian GNU/Linux和Ubuntu Linux中存在权限许可和访问控制问题漏洞，该漏洞源于程序没有正确验证启动X系统用户的TTY控制台权限。本地攻击者可利用该漏洞绕过控制台的权限检查。
solution:Upgrade x.org x_server to a higher version than -; Upgrade canonical ubuntu_linux to a higher version than 10.04,10.10,11.04,11.10,and avoid the version 10.04,10.10,11.04,11.10; Upgrade debian debian_linux to a higher version than *; Upgrade ubuntu linux to a higher version than *