Advisory
A note with CVSS 5.4 for component BC-DWB-SEM was released by SAP on 10.09.2024. The correction/advisory 3488039 was described with "[Multiple CVEs] Multiple vulnerabilities in SAP NetWeaver Application Server for ABAP and ABAP Platform" and affects the system type ABAP.
A workaround exists, according to SAP Security Advisory team. It is advisable to implement the correction as monthly patch process.
The vulnerability addressed is missing authorization check 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.
Risk specification
This note addresses several vulnerabilities in RFC enabled function modules in Netweaver ABAP where authorization checks are missing, allowing an authenticated attacker to execute otherwise protected functions.Solution
The affected functions are no longer RFC enabled and therefore can no longer be called. Although an alternative solution exists, it is advisable to apply the correction! This is the workaround, which was suggested by the SAP security experts: "a) As a workaround you may withdraw permission S_RFC with field RFC_TYPE with prefixed value for SMTR_NAVIGATION_MODULES_BX or field RFC_NAME with value of the function modules of the function group SMTR_NAVIGATION_MODULES_BX. b) In case you already run an UCON project: Block the functions of this function group using UCON. ".
Affected System
The advisory 3488039 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
- 10.0 [CVE-2021-37535] Missing Authorization check in SAP NetWeaver Application Server for Java (JMS Connector Service)
- 10.0 [Multiple CVE IDs] Missing Authentication Check in SAP Solution Manager (JAVA stack)
- 9.8 [CVE-2023-40309] Missing Authorization check in SAP CommonCryptoLib
- 9.6 [CVE-2023-31403] Improper Access Control vulnerability in SAP Business One product installation
- 9.6 [CVE-2024-33006] File upload vulnerability in SAP NetWeaver Application Server ABAP and ABAP Platform