Advisory

On 10.03.2020 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within SAP Commerce Cloud.

SAP Note 2876813 addresses "[CVE-2020-6201] Cross-Site Scripting (XSS) vulnerability in SAP Commerce Cloud (testweb extension)" to prevent Cross-Site Scripting (XSS) with a medium risk for exploitation.

A workaround does exist, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance, the team suggests.

Cross-site scripting (XSS) is the name of a class of security vulnerabilities that can occur in web-based applications. XSS combines all vulnerabilities that allow an attacker to inject HTML Markup and/or JavaScript into the front end of the affected web application.

XSS attacks can occur whenever the application dynamically creates its HTML/JavaScript/CSS content, which is passed to the user's web browser, and attacker-controlled values are used in this process. If these values are included in the generated code without proper validation and encoding, the attacker is able to include arbitrary coding snippets into the application's front end. The code is then rendered by the victim's web browser and interpreted in the victim's current authentication context.

Risk specification

SAP Commerce Cloud (testweb extension) allows an unauthenticated attacker to execute malicious scripts leading to Reflected Cross-Site Scripting (XSS) vulnerability.

Solution

The application now properly checks user provided input. Circumstances exist that prevent the timely installation of a patch provided by the manufacturer. In such cases, you may consider applying the suggested workaround as a temporary or compensating mitigation: "Cross-site scripting/request forgery filter engine on IDS/IPS/firewall systems. ".

The advisory is valid for

Releated advisories

Disclaimer

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The advisories found within the SecurityBridge advisory are generated and continuously enriched by our Team at SecurityBridge and affiliated security consultants, partners, customers of the SecurityBridge Platform, SAP support, and advisory groups.

We do not disclose zero-day vulnerabilities unless a security patch has been made available to the public. In such case, the platform only provides details on which version or signature updates are available within the SecurityBridge platform in order to monitor or measure the vulnerability.

In accordance with SAP guidelines, SecurityBridge only discloses issues where the fixing security note has been released. The vulnerability platform makes no references to available exploits or Proof of Concepts (PoC). Advisories and vulnerabilities will always mention the fixing security note or hints to the corresponding SAP documentation.

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Notifications

Affected system SAP Commerce Cloud

CVSS 6.1

Component CEC-COM-CPS-WEB

Patch Day2020-03

Released on2020/03/10

SAP Note 2876813

Workaround Yes

Advisory

Risk specification

Solution

Disclaimer

_{Affected system}
SAP Commerce Cloud

_CVSS
6.1

_Component
CEC-COM-CPS-WEB

_{Patch Day}
2020-03

_{Released
on}
2020/03/10

_{SAP Note}
2876813

_Workaround
Yes