Medium Severity
Affected system
BI/BO platform
CVSS
5.3
Component
BI-DEV-JAV
Patch Day
2020-10
Released on
2020/10/13
SAP Note
2943844
Workaround
Yes
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Advisory

SAP takes the security of its vast product portfolio very seriously and thus releases security fixes for vulnerabilities reported by external researchers and their customers every second Tuesday of the month.

SAP Note 2943844 was released on 13.10.2020 and deals with "[CVE-2020-6308] Server-Side Request Forgery vulnerability in SAP BusinessObjects Business Intelligence Platform (Web Services)" within BI/BO platform. We advice you to follow the instructions, to resolve cross-site request forgery (xsrf) with a medium potential for exploitation in component BI-DEV-JAV.

According to SAP Security Advisory team a workaround exists. It is advisable to implement the correction as part of maintenance.

Risk specification

This note has been re-released with updated 'Reason and Prerequisites' information. SAP BusinessObjects Business Intelligence Platform (Web Services) allows an unauthenticated attacker to inject arbitrary values as CMS parameters to perform lookups on the internal network which is otherwise not accessible externally.

Solution

The allowlist of authorized CMS is configured in the field allowed.cms in the dsws.properties file.  Alternativly, the consulting team has proposed the following: "The allowlist of authorized CMS must be configured by an Administrator before trying any login attempt. For this, the Administrator will have to edit the dsws.properties file and configure the field allowed.cms. It should contain a comma separated list of all the authorized URLs, for example: allowed.cms=host:6400,host2:6400,host3:15678.". The suggestion may be considered, as a workaround or compensating mitigation. We recommend installing/applying the correction wherever possible and as soon as possible. Base your decision on whether or not to apply the patch on your companies and systems risk perspective and consider the provided CVSS 5.3 score.

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

 

 

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.

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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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