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Arbitrary Redirect in Biller Direct 7.50

Impact On Business

The users of SAP BillerDirect could be targeted and redirected to a malicious site, potentially stealing their credentials or compromising their accounts through the combination of other techniques.

Affected Components Description

Tested on following versions:

  • SAP Biller Direct 7.0 (FSCM-BD)

Vulnerability Details

SAP Biller Direct allows an unauthenticated attacker to craft a legitimate looking URL. When it is clicked by an unsuspecting victim, it will use an unsanitized parameter to redirect the victim to a malicious site of the attacker’s choosing which can result in disclosure or modification of the victim’s information.

The Biller Direct SAP Java Application is vulnerable to an arbitrary redirect vulnerability in the parameter useradminRedirectURL, processed in the urls user_back.sap and user_logoff.sap; Other url’s processed by the CompanyUserAction class might be vulnerable too.

Solution

SAP has released SAP Note 3238042 which provides patched versions of the affected components.

The patches can be downloaded from https://me.sap.com/notes/3238042.

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

Report Timeline

  • 07/21/2022: Onapsis Provides vulnerability advisory to SAP
  • 07/22/2022: SAP acknowledges the report
  • 11/08/2022: SAP issues the patch.

References

Back to Advisories

Advisory Information

  • Public Release Date: 09/18/2024
  • Security Advisory ID: ONAPSIS-2024-0028
  • Researcher(s): Juan Pablo Perez Etchegoyen

Vulnerability Information

  • Vendor: SAP
  • Affected Components:
    • SAP Biller Direct 7.0 (FSCM-BD)
  • Vulnerability Class: CWE 601 – 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)
  • Risk Level: Medium
  • Assigned CVE: CVE-2022-41207
  • Vendor patch Information: SAP Security NOTE 3238042


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