Security Advisories

The Onapsis Research Labs delivers regular SAP® and Oracle® vulnerability research to our ecosystem of customers, partners and the information security industry.

Onapsis security advisories enable customers to better understand the security and business implications of discovered SAP and Oracle security issues. This enables organizations to prioritize patches, updates and their remediation strategies to ensure continuity of the business. Onapsis security advisories, together with vendor patches and security notes, are available for download to provide vendors and end-users with the necessary information to mitigate advanced threats to mission-critical applications running on SAP and Oracle.

Medium 01/26/2022 SAP Enterprise Portal

SAP Enterprise Portal - Anonymous Stored Open Redirect


This URL Redirection vulnerability in SAP Knowledge Management allows remote attackers to redirect users to arbitrary websites and conduct phishing attacks via a URL stored in a component. This gives  the attacker the ability to compromise the user's confidentiality and integrity.


SAP Enterprise Portal is a web frontend component for SAP Netweaver.

Affected components:

  • EP-RUNTIME 7.30
  • EP-RUNTIME 7.31
  • EP-RUNTIME 7.40
  • EP-RUNTIME 7.50

(Check SAP Note 3076399 for detailed information on affected releases)


In default configuration, the SAP Portal Webdynpro tc~kmc~wdui~favorites/FavoritesApplication is accessible remotely without authentication as a Guest user. It is possible to craft malicious ‘Favorites’ to redirect futur victims to the attacker website.


SAP has released SAP Note 3076399 which provides patched versions of the affected components.

The patches can be downloaded from:

Onapsis strongly recommends SAP customers to download the related security fixes and apply them to the affected components in order to reduce business risks.


  • 04/26/2021: Onapsis sends details to SAP
  • 04/29/2021: SAP provides internal ID
  • 08/10/2021: SAP releases SAP Note fixing the issue.


Advisory Information

  • Public Release Date: 01/26/2022
  • Security Advisory ID: ONAPSIS-2021-0024
  • Vulnerability Submission ID: 884
  • Researcher(s): Yvan Genuer

Vulnerability Information

  • Vendor: SAP
  • Vulnerability Class: |LS|CWE-601|RS| URL Redirection to Untrusted Site ('Open Redirect')
  • CVSS v3 score: 6.1 AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
  • Severity: Medium
  • CVE: CVE-2021-337057
  • Vendor patch Information: SAP Security Note 3076399


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and experience to deliver technical and business-context with sound security judgment to the broader information security community.

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This advisory is licensed under a Creative Commons 4.0 BY-ND International License