Advisory
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 3434666
was released on
14.05.2024 and deals with
"[Multiple CVEs] Missing Authorization Checks in SAP S/4 HANA (Manage Bank Statement Reprocessing Rules)" within ABAP.
We advice you to follow the instructions, to resolve
missing authorization check
with a
medium potential for exploitation
in component FI-FIO-AR-PAY.
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 specification
This note addresses two different CVEs in the SAP S4Hana App Manage Bank Statements. In both CVEs, missing authorization checks in Manage Bank Statement ReProcessing Rules permit an authenticated attacker, without the necessary authorization, to attain excess privileges 1. As the necessary authorization checks are not performed, an unauthorized attacker can delete rules of other users, thereby affecting the integrity of the application. However, confidentiality and availability are not affected. 2. Due to this vulnerability, an unauthorized attacker can enable/disable the sharing rule of other users, thereby affecting the integrity of the application as well. Confidentiality and availability are not affected.Solution
Both vulnerabilities had been solved in Manage Bank Statement Reprocessing Rules by performing necessary authorization checks which prevent attackers from gaining unapproved privileges
Affected System
The advisory 3434666 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
- S4CORE 105 32
- S4CORE 106 22
- S4CORE 107 15
- S4CORE 108 10
- SAPSCORE 131
- 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