CVE-2019-0367 in NetWeaver Process Integration
Summary
by MITRE
SAP NetWeaver Process Integration (B2B Toolkit), before versions 1.0 and 2.0, does not perform necessary authorization checks for an authenticated user, allowing the import of B2B table content that leads to Missing Authorization Check.
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Analysis
by VulDB Data Team • 09/28/2020
SAP NetWeaver Process Integration B2B Toolkit contains a critical authorization flaw that affects versions prior to 1.0 and 2.0 releases. This vulnerability stems from insufficient validation of user permissions during B2B table content import operations, creating a scenario where authenticated users can bypass necessary security controls. The flaw resides in the system's failure to properly verify whether users possess adequate privileges before allowing them to import B2B table data, fundamentally undermining the principle of least privilege and proper access control mechanisms. This missing authorization check represents a direct violation of security best practices and creates a pathway for unauthorized data manipulation within the integration environment.
The technical implementation of this vulnerability allows an authenticated user to import B2B table content without proper authorization validation, effectively enabling privilege escalation and unauthorized data access. The flaw manifests when the system processes import requests for B2B tables, where the authorization checking mechanism either fails to execute or does not properly enforce access controls. This weakness can be exploited by malicious actors who have gained initial authentication access to perform unauthorized operations that should require elevated privileges or specific roles. The vulnerability directly maps to CWE-284, which describes improper access control scenarios where insufficient authorization checks allow unauthorized access to resources. From an operational perspective, this flaw can lead to data exposure, unauthorized modifications, and potential system compromise through lateral movement within the SAP environment.
The impact of this vulnerability extends beyond simple data access issues, as it can enable attackers to manipulate B2B integration processes and potentially disrupt business operations. An attacker exploiting this vulnerability could import malicious B2B table content that might interfere with integration workflows, create unauthorized data entries, or establish backdoor access points within the process integration framework. The missing authorization check creates a persistent security gap that remains exploitable until the affected versions are patched or upgraded. Organizations utilizing SAP NetWeaver Process Integration B2B Toolkit in production environments face significant risk of unauthorized access to sensitive business data and integration configurations. This vulnerability aligns with ATT&CK technique T1078 which covers valid accounts and privilege escalation through legitimate access, as the flaw enables unauthorized operations using authenticated user credentials. The remediation approach requires immediate patching of affected systems to version 1.0 or 2.0 releases, along with comprehensive security reviews of B2B integration processes and access control configurations to ensure proper authorization enforcement mechanisms are in place.