SAP Fiori Launchpad Cross Site Scripting

# Onapsis Security Advisory 2022-0005: Cross-Site Scripting (XSS)vulnerability in SAP Fiori launchpad## Impact on BusinessImpact depends on the victim's privileges. In most cases, a successfulattackallows an attacker to hijack a session, or force the victim to performundesiredrequests in the SAP System (CSRF) as well as redirected to arbitrary website(Open Redirect).## Advisory Information- Public Release Date: 06/21/2022- Security Advisory ID: ONAPSIS-2022-0005- Researcher(s): Yvan Genuer## Vulnerability Information- Vendor: SAP- Affected Components:  - SAP\_UI 753  - SAP\_UI 754  - SAP\_UI 755  - SAP\_UI 756  - SAP\_BASIS 787  (Check SAP Note 3149805 for detailed information on affected releases)- Vulnerability Class: CWE-79- CVSS v3 score: 8.2 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N- Risk Level: High- Assigned CVE: CVE-2022-26101- Vendor patch Information: SAP Security NOTE 3149805## Affected Components DescriptionSAP Fiori launchpad is the entry point to ABAP platform for SAP Fiori appsonmobile and desktop devices.## Vulnerability DetailsDuring the navigation in SAP Fiori Launchpad, it is possible to provide acustomtheme name using the url parameter ```sap-theme```. This parameter has anoption to provide the path to a .css file, which it is used directly in thepagegeneration. This optional input is not sufficiently sanitized, allowing anattacker tocontrol and craft any kind of html payload in the page requested.## SolutionSAP has released SAP Note 3149805 which provide patched versions of theaffected components.The patches can be downloaded fromhttps://launchpad.support.sap.com/#/notes/3149805.Onapsis strongly recommends SAP customers to download the relatedsecurity fixes and apply them to the affected components in order toreduce business risks.## Report Timeline - 01/28/2022: Onapsis sends details to SAP - 02/09/2022: SAP provides internal ID - 03/08/2022: SAP releases SAP Note fixing the issue. - 06/21/2022: Advisory published## References- Onapsis blogpost:https://onapsis.com/blog/sap-security-patch-day-march-2022-sap-focused-run-affected-several-vulnerabilities- CVE Mitre:https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-26101- Vendor Patch:https://launchpad.support.sap.com/#/notes/3149805- Vendor FAQ:https://launchpad.support.sap.com/#/notes/3157089## About Onapsis Research LabsOnapsis Research Labs provides the industry analysis of key securityissues that impact business-critical systems and applications.Delivering frequent and timely security and compliance advisories withassociated risk levels, Onapsis Research Labs combine in-depth knowledgeand experience to deliver technical and business-context with soundsecurity judgment to the broader information security community.Find all reported vulnerabilities athttps://github.com/Onapsis/vulnerability_advisories## About Onapsis, Inc.Onapsis protects the mission-critical applications that run the globaleconomy,from the core to the cloud. The Onapsis Platform uniquely deliversactionableinsight, secure change, automated governance and continuous monitoring forcriticalsystems—ERP, CRM, PLM, HCM, SCM and BI applications—from leading vendorssuch as SAP,Oracle, Salesforce and others, while keeping them protected and compliant.For more information, connect with us on Twitter or LinkedIn, or visit us athttps://www.onapsis.com.-- This email and any files transmitted with it are confidential and intended solely for the use of the individual or entity to whom they are addressed. If you have received this email in error please notify the system manager. This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail.Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. If you are not the intended recipient you are notified that disclosing, copying, distributing or taking any action in reliance on the contents of this information is strictly prohibited.