High Severity
Affected system
Java
CVSS
8.3
Component
MDM-FN-MDS-SEC
Patch Day
2021-04
Released on
2021/04/13
SAP Note
3017908
Workaround
Yes
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Advisory

A note with CVSS 8.3 for component MDM-FN-MDS-SEC was released by SAP on 13.04.2021. The correction/advisory 3017908 was described with "[CVE-2021-21482] Information Disclosure in SAP NetWeaver Master Data Management" and affects the system type Java.

A workaround exists, according to SAP Security Advisory team. It is advisable to implement the correction as part of maintenance.

The vulnerability addressed is information disclosure within Java.

Information disclosure is when an application fails to properly protect sensitive and confidential information from parties that are not supposed to have access to the subject matter in normal circumstances.
Carefully review every information disclosure vulnerablity in regards to disclosure obligations post-GDPR for ‘Personal data’ under the Data Protection Act 2018.

Risk specification

When security guidelines and recommendations concerning administrative accounts of an SAP NetWeaver Master Data Management installation have not been thoroughly reviewed, a malicious user with access to the MDM Server subnet might try to find the password using a brute-force method.

Solution

SAP NetWeaver Master Data Management has been updated so that the configuration of locking has been enabled for all account roles.  Although an alternative solution exists, it is advisable to apply the correction! This is the workaround, which was suggested by the SAP security experts: "In order to minimize the risk of an attack being successful, a strong password policy for accounts of all types has to be enforced. Change all passwords of accounts with Admin role in accordance to the parameters described in this note.".

Affected System

SAP Netweaver Application Server Java is part of the SAP NetWeaver Application Platform. It provides the complete infrastructure for deploying and running Java applications.

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.

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.

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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