CVE-2024-21737: Critical SAP Application Interface Framework File Adapter Vulnerability Leading to Potential System Compromise

Overview

The CVE-2024-21737 is a critical vulnerability identified in the SAP Application Interface Framework File Adapter, specifically in version 702. It enables a high privilege user to traverse through different layers of the application and execute OS commands directly. This control over the application can lead to serious implications, potentially compromising the system and leading to data leakage. Given the widespread use of SAP systems across various industries, this vulnerability is of significant concern and poses serious risks to the confidentiality, integrity, and availability of sensitive data.

Vulnerability Summary

CVE ID: CVE-2024-21737
Severity: High (8.4 CVSS Score)
Attack Vector: Local
Privileges Required: High
User Interaction: None
Impact: System compromise, data leakage

Affected Products

Product | Affected Versions

SAP Application Interface Framework File Adapter | 702

How the Exploit Works

The exploit works by taking advantage of a design flaw within the SAP Application Interface Framework File Adapter. A high privilege user, such as a system administrator, has the ability to use a specific function module to traverse through different application layers. This traversal allows the user to execute operating system commands directly, bypassing any security restrictions. This direct command execution can lead to manipulations that can alter the application’s behavior, providing an attacker with the potential to compromise the system and access confidential data.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited using a shell command:

$ sap> fm module -exec "OS command"

In this conceptual example, `fm module -exec` is the function module traversal command, and `”OS command”` represents an arbitrary operating system command that the attacker wishes to execute. This command could be anything from data extraction to system shutdown, highlighting the severity of this vulnerability.
Please note that this is a conceptual example and the exact command will depend on the specific SAP system and the OS command the attacker intends to run.