CVE:CVE-2011-1492
CNNVD:CNNVD-201104-048
RoundCube Webmail是一款基于浏览器的IMAP客户端（邮件客户端），它支持地址薄管理、信息搜索、拼写检查等。
Roundcube Webmail 0.5.1之前版本中的steps/utils/modcss.inc没有正确验证对外部层叠样式表（CSS）的请求。远程认证用户可以借助特制请求，使用受影响系统作为邮件中转，从服务器触发任意越界TCP连接，并可能获取敏感信息。
solution:Upgrade roundcube webmail to a higher version than 0.5,0.1,0.1:alpha,0.1:beta,0.1:beta2,0.1:rc1,0.1:rc2,0.1.1,0.2,0.2:alpha,0.2:beta,0.2.1,0.3,0.3:beta,0.3:rc1,0.3.1,0.4,0.4:beta,0.4.1,0.4.2,0.5:beta,0.5:rc,and avoid the version (,0.5],0.1,0.1:alpha,0.1:beta,0.1:beta2,0.1:rc1,0.1:rc2,0.1.1,0.2,0.2:alpha,0.2:beta,0.2.1,0.3,0.3:beta,0.3:rc1,0.3.1,0.4,0.4:beta,0.4.1,0.4.2,0.5:beta,0.5:rc