Medium Severity
Affected system
ABAP
CVSS
4.3
Component
BC-MID-AC
Patch Day
2020-08
Released on
2020/08/11
SAP Note
2941510
Workaround
No
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Advisory

A note with CVSS 4.3 for component BC-MID-AC was released by SAP on 11.08.2020. The correction/advisory 2941510 was described with "[CVE-2020-6299] Information Disclosure in SAP NetWeaver (ABAP Server) and ABAP Platform" and affects the system type ABAP.

A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process .

The vulnerability addressed is information disclosure within ABAP.

Missing authority checks are still the most common security defect related to authorizations in custom code. Since SAP uses an explicit authorization model, an authority checks must be coded in order to be executed. If an explicit check is not coded, all users have access. This type of vulnerability not only exists in SAP standard it also exists in customer coding. Check your custom developments for vulnerabilities that pose a risk to your systems. SecurityBridge helps detect code vulnerabilities before they are implemented in production. 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

The ABAP Online Community application on SAP NetWeaver ABAP Server and ABAP Platform allows an authenticated attacker to gain access to the list of all users of the system, thus leading to information disclosure

Solution

The value help for the user list is removed from ABAP Online Community application.

Affected System

The advisory 2941510 describes a problem within an ABAP based systems of a specific version. Affected versions are described below. ABAP software is deployed in various software components and is widely used within the SAP product portfolio.

SAP NetWeaver Application Server (formally known as SAP Web Application Server) is a building block of SAP NetWeaver. It is the foundation for most software products developed by SAP SE. SAP NetWeaver systems exist with Java and/or ABAP stacks. The advisory could be relevant for single and dual-stack ABAP installations.

The advisory is valid for

 

Disclaimer

ABEX takes the security of SAP products very seriously. We very much encourage the responsible disclosure of security vulnerabilities. If you have detected a vulnerability in 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 ABEX security advisory are generated and continuously enriched by ABEX and affiliated security consultants, partners, customers of the SecurityBridge security suite, SAP support, and advisory groups.

There is no disclosure of zero-day vulnerabilities. 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, ABEX only discloses issues where the fixing security note has been released at least three months ago. 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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