SAP NetWeaver Visual Composer 7.0 RT (versions 7.30, 7.31, 7.40, 7.50) allows an authenticated non-administrative user to upload a malicious file over the network without restriction. The uploaded file can be processed in a way that enables the attacker to execute arbitrary operating system commands with the privileges of the Java Server process. This can be leveraged to read, modify, or delete any data on the server, or to shut down the server, resulting in a denial of service.
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2 valid exploits after Mallory filtered fakes, detection scripts, and README-only repos.
This repository provides a functional exploit for CVE-2021-38163, a critical vulnerability in SAP NetWeaver AS Java. The main exploit script (CVE-2021-38163.py) is a Python tool that automates the exploitation process: it scans the target for SAP NetWeaver services, attempts to enumerate the SID and instance, and then exploits a path traversal flaw in the Visual Composer Migration Service to upload a malicious JSP webshell. The script then triggers the webshell to execute arbitrary OS commands supplied by the attacker. The exploit requires valid SAP credentials and network access to the SAP server (notably port 50000). The included Payload.txt file provides background on payload obfuscation techniques (Base64, ASCII, HEX, AES) and sample Java code for obfuscating payloads, but is not directly used by the exploit script. The README.md gives a clear overview of the vulnerability, affected versions, impact, and mitigation steps. Overall, the repository is a practical, operational exploit for authenticated remote code execution on unpatched SAP NetWeaver AS Java systems.
This repository provides an exploit for CVE-2021-38163, targeting SAP NetWeaver (Visual Composer 7.0 RT) versions 7.30, 7.31, 7.40, and 7.50. The main exploit script (CVE-2021-38163.py) is a Python tool that authenticates to the SAP NetWeaver server using provided credentials, scans for the presence of the vulnerable service, and attempts to upload a malicious JSP webshell (urgent.jsp) to a specific directory on the server. Once uploaded, the script can execute arbitrary OS commands via HTTP requests to the webshell, with the commands passed as parameters. The exploit leverages network access and requires valid (non-admin) credentials. The obfuscation_payload.txt file contains several advanced Java/JSP payload obfuscation techniques (base64, ASCII, HEX, AES) to help evade detection by security controls. The repository is structured with a main exploit script, a README describing the vulnerability and impact, and a file with obfuscation methods for payloads. The exploit is operational and provides a working method for remote command execution on vulnerable SAP NetWeaver systems.
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