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

Source

https://github.com/osamahamad/CVE-2020-9484-Mass-Scan

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

CVE-2020-9484 Mass Scanner, Scan a list of urls for Apache Tomcat deserialization (CVE-2020-9484) which could lead to RCE

Readme

## CVE-2020-9484-Mass-Scan
CVE-2020-9484 Mass Scanner, Scan a list of urls against Apache Tomcat deserialization (CVE-2020-9484) which could lead to RCE, determine possible vulnerable hosts.


```
The web application will return HTTP 500 error upon exploitation, because it encounters a malicious serialized object instead of one that contains session information as it expects.
```


```
The Exploit:
Tomcat requests the Manager to check if a session with session ID “../../../../../../tmp/12345” exists
It will first check if it has that session in memory.
It does not. But the currently running Manager is a PersistentManager, so it will also check if it has the session on disk.
It will check at location directory + sessionid + ".session", which evaluates to “./session/../../../../../../tmp/12345.session“
If the file exists, it will deserialize it and parse the session information from it
```


Source: https://www.redtimmy.com/java-hacking/apache-tomcat-rce-by-deserialization-cve-2020-9484-write-up-and-exploit/ 


```targets.txt```

```
https://example.com
http://example:8080
http://example.com/

```

[Vuln Docker + PoC](https://github.com/masahiro331/CVE-2020-9484)

```./run.sh targets.txt ../../../../../usr/local/tomcat/groovy > result.txt ```

```cat result.txt | grep "SUCCESS"```



## References 
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9484

https://meterpreter.org/cve-2020-9484-apache-tomcat-remote-code-execution-vulnerability-alert/

https://github.com/masahiro331/CVE-2020-9484

https://www.redtimmy.com/java-hacking/apache-tomcat-rce-by-deserialization-cve-2020-9484-write-up-and-exploit/

File Snapshot


 [4.0K]  /data/pocs/eb749019795449a1dcbe057234279937eb445132
├── [1.6K]  README.md
└── [ 415]  run.sh

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