Advisory

A note with CVSS 4.7 for component BI-BIP-INV was released by SAP on 10.08.2021. The correction/advisory 3063048 was described with "[CVE-2021-33697] Reverse Tabnabbing in SAP BusinessObjects Business Intelligence Platform (SAP UI5)" and affects the system type BI/BO platform.

A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance.

The vulnerability addressed is reverse tabnabbing within BI/BO platform.

Reverse tabnabbing is an attack where a page linked from the target page is able to rewrite that page, for example to replace it with a phishing site. The following figure shows a brief illustration:

Reverse Tabnabbing Overview — Source: OWASP.org

While the user was originally on the correct page there is a high risk they will not notice that it has been changed to a phishing site.

Risk specification

SAP UI5 allows an unauthenticated attacker to redirect users to a malicious site due to insufficient reverse tabnabbing URL validation.

Solution

The affected BI application has been strengthened by upgrading the SAPUI5 version.

Affected System

SAP BusinessObjects Business Intelligence suite is an analytics platform allowing SAP customers to make better decisions based on their business data. SAP BI is a module meant for producing business insights and expands its power in combination with HANA DB and also exists as BW/4 HANA. Due to processing sensitive business data, the Data security is of utmost importance.

The advisory is valid for

ENTERPRISE 420 ⁸⁷
ENTERPRISE 430 ⁷⁵

Releated advisories

Disclaimer

SecurityBridge takes the security of SAP products very seriously. We very much encourage the responsible disclosure of security vulnerabilities. If you have detected a vulnerability concerning one of the SAP software products – either in the latest or in a former product version follow the guidelines and processes in accordance with the SAP portal page “Report a Security Vulnerability to SAP”.

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.

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Notifications

Affected system BI/BO platform

CVSS 4.7

Component BI-BIP-INV

Patch Day2021-08

Released on2021/08/10

SAP Note 3063048

Workaround No

Advisory

Risk specification

Solution

Affected System

Disclaimer

_{Affected system}
BI/BO platform

_CVSS
4.7

_Component
BI-BIP-INV

_{Patch Day}
2021-08

_{Released
on}
2021/08/10

_{SAP Note}
3063048

_Workaround
No