CVE-2021-33671 in NetWeaver Guided Procedures
Summary
by MITRE • 07/14/2021
SAP NetWeaver Guided Procedures (Administration Workset), versions - 7.10, 7.20, 7.30, 7.31, 7.40, 7.50, does not perform necessary authorization checks for an authenticated user, resulting in escalation of privileges. The impact of missing authorization could result to abuse of functionality restricted to a particular user group, and could allow unauthorized users to read, modify or delete restricted data.
If you want to get best quality of vulnerability data, you may have to visit VulDB.
Analysis
by VulDB Data Team • 07/18/2021
SAP NetWeaver Guided Procedures within the Administration Workset presents a critical authorization bypass vulnerability affecting multiple versions including 7.10 through 7.50. This flaw resides in the system's failure to properly validate user permissions before granting access to restricted functionalities. The vulnerability operates as a direct violation of the principle of least privilege, where authenticated users can escalate their privileges beyond their intended access levels. The affected component specifically relates to the guided procedures functionality within the administration workset environment, which is designed to streamline administrative tasks through structured workflows. This authorization gap creates a pathway for malicious actors to access sensitive administrative functions that should be restricted to specific user roles or groups.
The technical implementation flaw stems from insufficient authorization checks within the application's security framework. When users interact with the guided procedures functionality, the system fails to properly verify whether the authenticated user possesses the necessary privileges to perform specific administrative operations. This weakness manifests as a complete breakdown in the authorization mechanism, allowing users to bypass the normal access control restrictions that would typically prevent them from accessing restricted data or performing privileged actions. The vulnerability's impact extends beyond simple data access, as it enables users to read, modify, or delete restricted information that should only be accessible to authorized personnel. This authorization bypass represents a fundamental failure in the application's security architecture, creating a persistent risk that can be exploited by both internal and external threat actors.
The operational consequences of this vulnerability are severe and far-reaching across enterprise security postures. Unauthorized users who exploit this weakness can gain access to sensitive administrative functions that control critical system operations and data management capabilities. The impact includes potential data breaches, unauthorized modifications to system configurations, and the ability to perform destructive operations on restricted datasets. Organizations utilizing affected SAP NetWeaver versions face significant risk of privilege escalation attacks that could lead to complete system compromise. This vulnerability directly maps to CWE-284 (Improper Access Control) and aligns with ATT&CK technique T1078 (Valid Accounts) and T1548.001 (Abuse Elevation Control Mechanism), as it enables attackers to leverage legitimate user accounts to gain elevated privileges. The vulnerability's persistence across multiple versions indicates a systemic issue within the SAP NetWeaver framework's authorization implementation.
Organizations should immediately implement comprehensive mitigation strategies to address this vulnerability. The primary recommendation involves applying the relevant SAP security patches and updates released for the affected versions. System administrators should conduct thorough access control reviews to identify and remediate any unauthorized access paths that may have been established. Network segmentation and monitoring should be enhanced to detect anomalous access patterns that could indicate exploitation attempts. Security teams should implement additional logging and auditing measures specifically targeting guided procedures functionality to identify unauthorized usage. The vulnerability's classification as a high-severity issue according to CVSS v3.1 scoring warrants immediate attention and prioritization in security remediation efforts. Regular security assessments should be conducted to ensure that authorization controls remain effective and that no additional bypass mechanisms have been introduced through system modifications or third-party integrations.