CVE-2022-41271 in NetWeaver Process Integration
Summary
by MITRE • 12/13/2022
An unauthenticated user can attach to an open interface exposed through JNDI by the Messaging System of SAP NetWeaver Process Integration (PI) - version 7.50. This user can make use of an open naming and directory API to access services that could perform unauthorized operations. The vulnerability affects local users and data, leading to a considerable impact on confidentiality as well as availability and a limited impact on the integrity of the application. These operations can be used to: * Read any information * Modify sensitive information * Denial of Service attacks (DoS) * SQL Injection
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Analysis
by VulDB Data Team • 12/13/2022
The vulnerability identified as CVE-2022-41271 represents a critical security flaw within SAP NetWeaver Process Integration messaging system version 7.50. This issue stems from an insecure exposure of the Java Naming and Directory Interface (JNDI) service, which allows any unauthenticated user to establish connections to the open interface. The JNDI service typically serves as a directory service that enables applications to look up and access resources using a hierarchical naming system, but in this case, the service lacks proper authentication mechanisms, creating an attack surface that can be exploited by malicious actors without requiring any credentials or prior access rights.
The technical exploitation of this vulnerability occurs through the manipulation of the JNDI naming and directory API, which is designed to provide a standard interface for accessing naming and directory services in Java applications. When an unauthenticated user connects to the exposed JNDI interface, they gain access to the underlying directory services that can be leveraged to perform unauthorized operations against the system. This flaw is classified under CWE-284, which specifically addresses "Improper Access Control," as the system fails to properly enforce access restrictions for the exposed JNDI service. The vulnerability essentially allows attackers to bypass normal authentication procedures and directly interact with the directory services, creating a pathway for various malicious activities.
The operational impact of this vulnerability is significant and multifaceted, affecting all three pillars of the CIA triad. Confidentiality is severely compromised as attackers can read any information stored within the system's directory services, potentially accessing sensitive business data, user credentials, or proprietary information. Availability is threatened through denial of service attacks that can disrupt the messaging system's operations, preventing legitimate users from accessing critical business processes. Integrity is also at risk as the vulnerability enables attackers to modify sensitive information within the directory services, potentially corrupting data or injecting malicious entries. The attack surface extends to local users and data, meaning that even internal system components and user information stored in the directory can be accessed, modified, or destroyed. This vulnerability aligns with ATT&CK technique T1071.004, which covers "Application Layer Protocol: DNS," as the JNDI service often communicates through DNS resolution, and T1489, which covers "Service Stop," as the DoS capabilities can disrupt system availability.
The exploitation capabilities of this vulnerability extend beyond simple information disclosure to include more sophisticated attack vectors such as SQL injection, which can occur when attackers manipulate the directory service to execute malicious database commands. This enables attackers to perform data manipulation, information extraction, and potentially gain deeper access to the underlying database systems. The lack of authentication mechanisms creates a persistent threat that can be exploited repeatedly without detection, as there are no access logs or monitoring controls in place to identify unauthorized access attempts to the JNDI interface. Organizations using SAP NetWeaver Process Integration version 7.50 should implement immediate mitigations including network segmentation to restrict access to the JNDI interface, implementing proper authentication controls for directory services, and conducting thorough security assessments of all exposed interfaces. Additionally, regular monitoring of system logs for unauthorized access attempts and implementing network-based intrusion detection systems can help identify and prevent exploitation attempts, while applying the latest SAP security patches and updates remains the most effective long-term solution to address this vulnerability.