Advisory
On 23.06.2020 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within ABAP.
SAP Note 2938831 addresses "SESS: Duplicate AU3 entries in the Security Audit Log" to prevent missing logging functionality with a medium risk for exploitation.
A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process, the team suggests.
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.
Risk specification
In certain cases when starting transactions from other transactions (e.g. from SU01) a duplicate AU3 security audit log entry is written.Solution
The correction provides logic to remove duplicate entries have been removed. Please note that a subsequent correction has been released with 3089438.
Affected System
The advisory 2938831 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
- SAP_BASIS 700-702 66
- SAP_BASIS 710-711 21
- SAP_BASIS 730 34
- SAP_BASIS 731 78
- SAP_BASIS 740 81
- SAP_BASIS 750-754 11
