CVE:CVE-2004-1558
CNNVD:CNNVD-200412-1143
YPOPs!（又称为YahooPOPS）0.4到0.6版本存在多个基于堆栈的缓冲区溢出漏洞。远程攻击者借助超长（1）POP3 USER命令或（2）SMTP导致服务拒绝（崩溃）并可能执行任意代码。
solution:Upgrade ypops ypops to a higher version than 0.4,0.4.1,0.4.2,0.4.3,0.4.4,0.4.5,0.4.6,0.5,0.6,and avoid the version 0.4,0.4.1,0.4.2,0.4.3,0.4.4,0.4.5,0.4.6,0.5,0.6