Shopware up to 5.3.3 loadPreviewAction sort external reference

HistoryDiffrelatejsonxmlCTI

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.2	$0-$5k	0.00

Summaryinfo

A vulnerability, which was classified as critical, was found in Shopware up to 5.3.3. The affected element is the function loadPreviewAction. Such manipulation of the argument sort as part of Parameter leads to external reference. This vulnerability is referenced as CVE-2017-18357. It is possible to launch the attack remotely. Furthermore, an exploit is available. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in Shopware up to 5.3.3 and classified as critical. Affected by this issue is the function loadPreviewAction. The manipulation of the argument sort as part of a Parameter leads to a external reference vulnerability. Using CWE to declare the problem leads to CWE-610. The product uses an externally controlled name or reference that resolves to a resource that is outside of the intended control sphere. Impacted is confidentiality, integrity, and availability. CVE summarizes:

Shopware before 5.3.4 has a PHP Object Instantiation issue via the sort parameter to the loadPreviewAction() method of the Shopware_Controllers_Backend_ProductStream controller, with resultant XXE via instantiation of a SimpleXMLElement object.

The bug was discovered 11/08/2017. The weakness was published 01/15/2019 (Website). The advisory is shared for download at blog.ripstech.com. This vulnerability is handled as CVE-2017-18357 since 01/15/2019. The exploitation is known to be easy. The attack may be launched remotely. A simple authentication is required for exploitation. Technical details as well as a public exploit are known.

A public exploit has been developed by Karim Ouerghemmi/mr_me in Ruby/Metasploit and been published 5 months after the advisory. The exploit is available at github.com. It is declared as highly functional. The vulnerability was handled as a non-public zero-day exploit for at least 433 days. During that time the estimated underground price was around $0-$5k.

Upgrading to version 5.3.4 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Exploit-DB (46915). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Shopware

Version

License

commercial

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.1

VulDB Base Score: 6.3
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 6.5
NVD Vector: 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: External reference
CWE: CWE-610
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Access: Public
Status: Highly functional
Author: Karim Ouerghemmi/mr_me
Programming Language: 🔍
Download: 🔍

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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MetaSploit ID: exploit/multi/http/shopware_createinstancefromnamedarguments_rce
MetaSploit Name: Shopware createInstanceFromNamedArguments PHP Object Instantiation RCE

Exploit-DB: 🔍