CVE:CVE-2011-1784
CNNVD:CNNVD-201105-218
Keepalived是一个款使用C语言编写的路由软件。该软件主要用于负载均衡和故障检测等。
Keepalived 1.2.2及早期版本的core/pidfile.c中的pidfile_write函数对/var/run/下的Brocade Fabric OS（FOS）是美国博科通讯系统（Brocade）公司的一套使用在交换机和路由器等设备中的嵌入式操作系统。command line interface（CLI）是其中的一个命令行界面。.pid，checkers.pid和vrrp.pid文件使用0666权限。本地用户可以通过向其中一个文件写入PID导致终止任意进程。
solution:Upgrade keepalived keepalived to a higher version than 1.2.2,0.2.1,0.2.3,0.2.6,0.2.7,0.3.5,0.3.6,0.3.7,0.3.8,0.4.8,0.4.9,0.4.9a,0.5.3,0.5.5,0.5.6,0.5.7,0.5.8,0.5.9,0.6.1,0.6.2,0.6.3,0.6.4,0.6.5,0.6.6,0.6.7,0.6.8,0.6.9,0.6.10,0.7.1,0.7.6,1.0.0,1.0.1,1.0.2,1.0.3,1.1.0,1.1.1,1.1.2,1.1.3,1.1.4,1.1.5,1.1.6,1.1.7,1.1.8,1.1.9,1.1.10,1.1.11,1.1.12,1.1.13,1.1.14,1.1.15,1.1.16,1.1.17,1.1.18,1.1.19,1.1.20,1.2.0,1.2.1,and avoid the version (,1.2.2],0.2.1,0.2.3,0.2.6,0.2.7,0.3.5,0.3.6,0.3.7,0.3.8,0.4.8,0.4.9,0.4.9a,0.5.3,0.5.5,0.5.6,0.5.7,0.5.8,0.5.9,0.6.1,0.6.2,0.6.3,0.6.4,0.6.5,0.6.6,0.6.7,0.6.8,0.6.9,0.6.10,0.7.1,0.7.6,1.0.0,1.0.1,1.0.2,1.0.3,1.1.0,1.1.1,1.1.2,1.1.3,1.1.4,1.1.5,1.1.6,1.1.7,1.1.8,1.1.9,1.1.10,1.1.11,1.1.12,1.1.13,1.1.14,1.1.15,1.1.16,1.1.17,1.1.18,1.1.19,1.1.20,1.2.0,1.2.1