Greenplum Database (GPDB) is an open source data warehouse based on PostgreSQL. In versions prior to 6.22.3 Greenplum Database used an unsafe methods to extract tar files within GPPKGs. greenplum-db is vulnerable to path traversal leading to arbitrary file writes. An attacker can use this vulnerability to overwrite data or system files potentially leading to crash or malfunction of the system. Any files which are accessible to the running process are at risk. All users are requested to upgrade to Greenplum Database version 6.23.2 or higher. There are no known workarounds for this vulnerability.
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.