Advisory
On 09.01.2024 a security relevant correction has been released by SAP SE. The manufacturer resolves an issue within ABAP.
SAP Note 3407617 addresses "[CVE-2024-21735] Improper Authorization check in SAP LT Replication Server" to prevent escalation of privileges with a high risk for exploitation.
A workaround does not exist, according to SAP Security Advisory team. It is advisable to implement the correction as project, 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
SAP LT Replication Server allows an authenticated attacker to perform unintended actions resulting in escalation of privileges if you are using very powerful system users for running background jobs.Solution
1. In transaction LTRC, deactivate the configuration to stop all background jobs. 2. On the "Administration Data" tab, under "SAP LT Replication Server System", choose the button "Advanced Job Settings". In the field "Job User", specify a user that has role SAP_IUUC_REPL_ADMIN as well as any additional authorizations that may be required to execute your rules. 3. Activate the configuration.
Affected System
The advisory 3407617 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 103 49
- S4CORE 104 45
- S4CORE 105 33
- S4CORE 106 23
- S4CORE 107 17
- S4CORE 108 11
- 9.1 [Multiple CVEs] Escalation of Privileges in SAP Edge Integration Cell
- 9.1 [Multiple CVEs] Escalation of Privileges in SAP Business Technology Platform (BTP) Security Services Integration Libraries
- 9.1 [CVE-2023-49583] Escalation of Privileges in applications developed through SAP Business Application Studio, SAP Web IDE Full-Stack and SAP Web IDE for SAP HANA
