Vulnerabilities > CVE-2019-12799 - Deserialization of Untrusted Data vulnerability in Shopware

CVSS 8.8 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

LOW

Confidentiality impact

HIGH

Integrity impact

HIGH

Availability impact

HIGH

network

low complexity

shopware

CWE-502

metasploit

NVD

Published: 2019-06-13

Updated: 2024-01-09

Summary

In createInstanceFromNamedArguments in Shopware through 5.6.x, a crafted web request can trigger a PHP object instantiation vulnerability, which can result in an arbitrary deserialization if the right class is instantiated. An attacker can leverage this deserialization to achieve remote code execution. NOTE: this issue is a bypass for a CVE-2017-18357 whitelist patch.

Vulnerable Configurations

Part	Description	Count
Application	Shopware Shopware Shopware 4.0.1 Shopware Shopware 4.0.2 Shopware Shopware 4.0.3 Shopware Shopware 4.0.4 Shopware Shopware 4.0.5 Shopware Shopware 4.0.6 Shopware Shopware 4.0.7 Shopware Shopware 4.0.8 Shopware Shopware 4.1.0 Shopware Shopware 4.1.1 Shopware Shopware 4.1.2 Shopware Shopware 4.1.3 Shopware Shopware 4.1.4 Shopware Shopware 4.2.0 Shopware Shopware 4.2.1 Shopware Shopware 4.2.1.1 Shopware Shopware 4.2.2 Shopware Shopware 4.2.3 Shopware Shopware 4.3.0 Shopware Shopware 4.3.1 Shopware Shopware 4.3.2 Shopware Shopware 4.3.3 Shopware Shopware 4.3.4 Shopware Shopware 4.3.5 Shopware Shopware 4.3.6 Shopware Shopware 4.3.7 Shopware Shopware 5.0.0 Shopware Shopware 5.0.1 Shopware Shopware 5.0.2 Shopware Shopware 5.0.3 Shopware Shopware 5.0.4 Shopware Shopware 5.1.0 Shopware Shopware 5.1.1 Shopware Shopware 5.1.2 Shopware Shopware 5.1.3 Shopware Shopware 5.1.4 Shopware Shopware 5.1.5 Shopware Shopware 5.1.6 Shopware Shopware 5.2.0 Shopware Shopware 5.2.1 Shopware Shopware 5.2.2 Shopware Shopware 5.2.3 Shopware Shopware 5.2.4 Shopware Shopware 5.2.5 Shopware Shopware 5.2.6 Shopware Shopware 5.2.7 Shopware Shopware 5.2.8 Shopware Shopware 5.2.9 Shopware Shopware 5.2.10 Shopware Shopware 5.2.11 Shopware Shopware 5.2.12 Shopware Shopware 5.2.13 Shopware Shopware 5.2.14 Shopware Shopware 5.2.15 Shopware Shopware 5.2.16 Shopware Shopware 5.2.17 Shopware Shopware 5.2.18 Shopware Shopware 5.2.19 Shopware Shopware 5.2.20 Shopware Shopware 5.2.21 Shopware Shopware 5.2.22 Shopware Shopware 5.2.23 Shopware Shopware 5.2.24 Shopware Shopware 5.2.25 Shopware Shopware 5.2.26 Shopware Shopware 5.2.27 Shopware Shopware 5.3.0 Shopware Shopware 5.3.1 Shopware Shopware 5.3.2 Shopware Shopware 5.3.3 Shopware Shopware 5.3.4 Shopware Shopware 5.3.5 Shopware Shopware 5.3.6 Shopware Shopware 5.3.7 Shopware Shopware 5.4.0 Shopware Shopware 5.4.1 Shopware Shopware 5.4.2 Shopware Shopware 5.4.3 Shopware Shopware 5.4.4 Shopware Shopware 5.4.5 Shopware Shopware 5.4.6 Shopware Shopware 5.5.0 Shopware Shopware 5.5.1 Shopware Shopware 5.5.2 Shopware Shopware 5.5.3 Shopware Shopware 5.5.4 Shopware Shopware 5.5.5 Shopware Shopware 5.5.6 Shopware Shopware 5.5.7 Shopware Shopware 5.5.8 Shopware Shopware 5.5.9 Shopware Shopware 5.5.10 Shopware Shopware 5.6.0	118

Common Weakness Enumeration (CWE)

CWE-502 - Deserialization of Untrusted Data

Metasploit

description	This module exploits a php object instantiation vulnerability that can lead to RCE in Shopware. An authenticated backend user could exploit the vulnerability. The vulnerability exists in the createInstanceFromNamedArguments function, where the code insufficiently performs whitelist check which can be bypassed to trigger an object injection. An attacker can leverage this to deserialize an arbitrary payload and write a webshell to the target system, resulting in remote code execution. Tested on Shopware git branches 5.6, 5.5, 5.4, 5.3.
id	MSF:EXPLOIT/MULTI/HTTP/SHOPWARE_CREATEINSTANCEFROMNAMEDARGUMENTS_RCE
last seen	2020-06-14
modified	2019-09-12
published	2019-05-09
references	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-12799 https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18357 https://blog.ripstech.com/2017/shopware-php-object-instantiation-to-blind-xxe/
reporter	Rapid7
source	https://github.com/rapid7/metasploit-framework/blob/master//modules/exploits/multi/http/shopware_createinstancefromnamedarguments_rce.rb
title	Shopware createInstanceFromNamedArguments PHP Object Instantiation RCE

References

https://github.com/rapid7/metasploit-framework/pull/11828