CVE:CVE-2009-4420
CNNVD:CNNVD-200912-353
F5 BIG-IP是功能强大的应用交换机。 
F5 Networks BIG-IP Application Security Manager和Protocol Security Manager (PSM)的bd守护进程存在缓冲溢出漏洞。远程攻击者可以借助未明向量，导致拒绝服务。
solution:Upgrade f5 big-ip_protocol_security_module to a higher version than 10.0.0,and avoid the version 10.0.0; Upgrade f5 big-ip_application_security_manager to a higher version than 9.4.4,9.4.5,9.4.6,9.4.7,10.0.0,10.0.1,and avoid the version 9.4.4,9.4.5,9.4.6,9.4.7,10.0.0,10.0.1; Upgrade f5 big-ip_protocol_security_manager to a higher version than 9.4.5,9.4.6,9.4.7,10.0.1,and avoid the version 9.4.5,9.4.6,9.4.7,10.0.1