SAP NetWeaver Application Server for ABAP and ABAP Platform, as used in multiple enterprise-level applications, has been found to be vulnerable to unauthorized system information disclosure. This vulnerability, as registered under Common Vulnerabilities and Exposures (CVE-2025-0053), allows an attacker to gain sensitive information about the system configuration, which can be a crucial asset for launching further attacks on the target system. This post intends to dive into the details of the vulnerability, the code snippet that exploits this issue, and links to original references to better protect your SAP applications.
The Vulnerability
The vulnerability resides in the way SAP NetWeaver Application Server for ABAP (Advanced Business Application Programming) and ABAP Platform process specific URL parameters. An attacker can craft a malicious URL that, when processed by the application server or the platform, discloses sensitive system information to the attacker without requiring any authentication. While this does not directly impact the application's confidentiality, the information obtained might aid the attacker in conducting additional attacks or exploits.
URL parameters are usually processed by the server-side script. In this specific scenario, the SAP NetWeaver Application Server for ABAP and ABAP Platform fail to properly sanitize the URL parameters, leading to unauthorized access to system configuration details.
The Code Snippet
Here is a sample code snippet of a crafted URL that exploits the vulnerability. Note that the actual payload may differ based on the target environment.
https://target.domain/sap/bc/webdynpro/sap/component?SAP-CONFIGURATION=<malicious_payload>;
The <malicious_payload> part can be replaced with a payload designed specifically to take advantage of the server-side processing flaw. By carefully designing this payload, an attacker could force the server to reveal sensitive information about the system.
Exploit Details
To reproduce this vulnerability and test the severity of the issue, an attacker with network access to the targeted SAP server can prepare a payload targeting the URL parameter processing functionality.
After crafting the malicious URL, the attacker can easily access the target server using a regular web browser or curl-based tools. The server will then return the requested information in response to the request.
Upon receiving the system configuration data, the attacker could use this information to gather intelligence about the system's setup, internal structure, and potentially sensitive information that might help facilitate further attacks.
References
For more details about this vulnerability, CVE-2025-0053, please refer to the following official sources:
1. SAP Security Note: https://launchpad.support.sap.com/#/notes/####/ (requires SAP Support Portal access)
2. National Vulnerability Database (NVD): https://nvd.nist.gov/vuln/detail/CVE-2025-0053
Conclusion
CVE-2025-0053 is a serious vulnerability affecting SAP NetWeaver Application Server for ABAP and ABAP Platform, which permits unauthorized access to system configuration information. Organizations using the affected platforms need to urgently evaluate the environment and check for this vulnerability.
Make sure to check the provided references for updates and recommended actions to prevent unauthorized exposure of sensitive information. All necessary steps should be taken to keep the systems protected from any potential attackers exploiting this vulnerability.
Timeline
Published on: 01/14/2025 01:15:15 UTC