Due to directory traversal vulnerability in SAP S/4HANA (Bank Communication Management), an attacker with high privileges and access to a specific transaction and method in Bank Communication Management could gain unauthorized access to sensitive operating system files. This could allow the attacker to potentially read or delete these files hence causing a high impact on confidentiality and low impact on integrity. There is no impact on availability of the system.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.