Red Hat: CVE-2021-31810: CVE-2021-31810 ruby: FTP PASV command response can cause Net::FTP to connect to arbitrary host (Multiple Advisories)

An issue was discovered in Ruby through 2.6.7, 2.7.x through 2.7.3, and 3.x through 3.0.1. A malicious FTP server can use the PASV response to trick Net::FTP into connecting back to a given IP address and port. This potentially makes curl extract information about services that are otherwise private and not disclosed (e.g., the attacker can conduct port scans and service banner extractions).