CVE:CVE-2010-3443
CNNVD:CNNVD-201311-368
Quassel IRC（又名Quassel）是Quassel IRC团队开发的一款跨平台的分布式IRC聊天客户端，它采用QT应用框架开发，PostgreSQL数据库存储数据。
Quassel IRC 0.6.2及之前的版本和0.7.0版本中的ctcphandler.cpp文件中存在拒绝服务漏洞。远程攻击者可通过发送在PRIVMSG消息中的多个Client-To-Client Protocol (CTCP)请求利用该漏洞造成拒绝服务（IRC服务中断）。
solution:Upgrade quassel-irc quassel_irc to a higher version than 0.6.2,0.1.0,0.3.0,0.3.0.1,0.3.0.2,0.3.0.3,0.3.1,0.4.0,0.4.1,0.4.2,0.4.3,0.5.0,0.6.1,0.7.0,and avoid the version (,0.6.2],0.1.0,0.3.0,0.3.0.1,0.3.0.2,0.3.0.3,0.3.1,0.4.0,0.4.1,0.4.2,0.4.3,0.5.0,0.6.1,0.7.0; Upgrade canonical ubuntu_linux to a higher version than 9.04,9.10,10.04,and avoid the version 9.04,9.10,10.04