CVE:CVE-2000-0517
CNNVD:CNNVD-200005-096
Netscape 4.73和更早版本无法正确警告用户潜在的无效证书，如果用户以前接受了不同Web站点证书。远程攻击者利用此漏洞通过害网站的DNS信息可以欺骗合法网站。
solution:Upgrade netscape communicator to a higher version than 4.0,4.5,4.6,4.7,4.51,4.61,4.72,4.73,and avoid the version 4.0,4.5,4.6,4.7,4.51,4.61,4.72,4.73