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 3145997
was released on
08.03.2022 and deals with
"[CVE-2022-26102] Missing authorization check in SAP NetWeaver Application Server for ABAP" within ABAP.
We advice you to follow the instructions, to resolve
missing authorization check
medium potential for exploitation
in component BC-ABA-SC.
According to SAP Security Advisory team a workaround does not exist. It is advisable to implement the correction as monthly patch process .
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 specificationDue to missing authorization check, SAP NetWeaver Application Server for ABAP allows an authenticated attacker, to access content on the start screen of any transaction that is available within the same SAP system even if he/she isn't authorized for that transaction. A successful exploitation could expose information and in the worst case manipulate data before the start screen is executed, resulting in a limited impact on confidentiality and integrity of the application.
The affected code for the transaction SHDB has been updated to properly validate the start authorization for transactions called from it.
The advisory 3145997 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)
- 9.6 [CVE-2020-6320] Improper Access Control in SAP Marketing (Mobile Channel Servlet)
- 9.6 [CVE-2021-21481] Missing Authorization Check in SAP NetWeaver AS JAVA (MigrationService)
- 9.6 [CVE-2021-40501] Missing Authorization check in ABAP Platform Kernel